JP7495227B2 - Aromatic liquid - Google Patents

Description

The present invention relates to an aromatic liquid that is impregnated into a liquid-absorbing member and evaporated, and is used in a vaporizer in which the aromatic liquid is not supplied to the liquid-absorbing member during use, and the aromatic liquid has a high average evaporation rate during use and is unlikely to produce a difference in fragrance strength between the early and later stages of use. The present invention also relates to a vaporizer that uses the aromatic liquid.

Traditionally, aromatic liquids containing fragrances have been widely used to eliminate unpleasant odors inside cars and rooms and create a comfortable space.

Conventionally, various types of volatilizers that volatilize aromatic liquid have been developed. A typical volatilizer is one that stores aromatic liquid in a container and has a liquid absorbing member that sucks up the stored aromatic liquid and volatilizes it. In this type of volatilizer, the aromatic liquid stored in the container is continuously supplied to the volatilizer during use, so the fragrance released tends to be maintained at a constant level from early to later periods of use. However, because the aromatic liquid is stored in a container, this type of volatilizer has the disadvantage that when installed inside a car, the aromatic liquid in the container is easily spilled due to shaking when driving on rough roads, etc.

In addition, as a type of volatilizer that can prevent the spillage of aromatic liquid, a type has been proposed in which the opening of a container that holds the aromatic liquid is covered with a gas-permeable membrane, and the aromatic liquid is volatilized through the membrane (see, for example, Patent Document 1). However, this type of volatilizer has the disadvantage that it cannot accommodate a wide range of user preferences, since the composition of the aromatic liquid that can be volatilized through the membrane is limited.

On the other hand, there is a type of volatilizer that contains only a liquid-absorbing member impregnated with aromatic liquid in a container, and volatilizes the aromatic liquid without supplying aromatic liquid to the liquid-absorbing member during use. In this type of volatilizer, all of the aromatic liquid is impregnated in the liquid-absorbing member, so there is no need to worry about the aromatic liquid in the container spilling due to shaking, etc., and it is designed to be ideal for use inside a car. However, this type of volatilizer has the disadvantage that the evaporation rate of the aromatic liquid tends to decrease over time of use, making it difficult to maintain a constant fragrance intensity from the early to late stages of use. Furthermore, if an aromatic liquid that is difficult to volatilize is used, it is possible to keep the fragrance intensity constant to a certain extent from the early to late stages of use, but the average evaporation rate during the period of use will be slower, and as a result, the fragrance intensity will be weaker and the aromatic effect achieved throughout the entire period of use will tend to be insufficient.

JP 2014-94619 A

The object of the present invention is to provide an aromatic liquid that is used in a vaporizer that is impregnated into a liquid-absorbing member and vaporized, and that does not supply aromatic liquid to the liquid-absorbing member during use, and that has a high average vaporization rate during use and is unlikely to cause a difference in fragrance strength between the early and later stages of use.

The present inventors have conducted extensive research to solve the above problems, and have found that, when an aromatic liquid containing a fragrance and a solvent, which has a residual rate (R) of 50% or less after 144 hours under specific test conditions described below, and a value obtained by subtracting the rate of weight loss ( _V2 ) from the rate of weight loss ( _V1 ) during 0 to 24 hours is 1.000 g/day or less, is impregnated into a liquid-absorbing member and evaporated by a vaporizer that does not supply aromatic liquid to the liquid-absorbing member during use, the average evaporation rate during the period of use is high, and furthermore, the weakening of the fragrance intensity in the latter period of use can be suppressed, and the fragrance intensity is less likely to differ between the early and later periods of use. The present invention was completed based on this knowledge and through further research.

That is, the present invention provides the following aspects.
Item 1. Aromatic liquid used in a vaporizer that is impregnated into a liquid-absorbing member and vaporized, and in which the aromatic liquid is not supplied to the liquid-absorbing member during use,
Contains fragrances and solvents,
The residual rate (R) after 144 hours measured under the following test conditions is 50% or less, and the value obtained by subtracting the weight loss rate (V ₂ ) from the weight loss rate (V ₁ ) from ...
<Test conditions>
(1) A rectangular liquid-absorbing member (felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g/cm ³ ) placed on a plate was impregnated with 3.5 mL of aromatic liquid and allowed to stand in a room at 40°C.
(2) Measure the weight of the remaining fragrance liquid at the start of leaving it still, and after 24 hours, 120 hours, and 144 hours from the start of leaving it still.
(3) Calculate the remaining rate after 144 hours R, the weight loss rate from 0 to 24 hours V ₁ , and the weight loss rate from 120 to 144 hours V ₂ according to the following formulas.
R(%)=(weight of aromatic liquid after 144 hours from the start of standing still/weight of aromatic liquid at the start of standing still)×100
V ₁ (g/day) = weight of aromatic liquid at the start of standing still - weight of aromatic liquid after 24 hours from the start of standing still V ₂ (g/day) = weight of aromatic liquid after 120 hours from the start of standing still - weight of aromatic liquid after 144 hours from the start of standing still Item 2. The aromatic liquid according to item 1, wherein the solvent is a paraffinic hydrocarbon having a vapor pressure at 20°C of 0.005 to 0.040 kPa.
Item 3. The aromatic liquid according to item 1 or 2, which contains 20 to 90% by weight of a fragrance and 10 to 80% by weight of a solvent.
Item 4. The aromatic liquid according to any one of Items 1 to 3, which is for use inside an automobile.
Item 5. A device comprising the aromatic liquid according to any one of items 1 to 4, a liquid-absorbing member, and a container having an air hole,
The liquid-absorbing member impregnated with the aromatic liquid is contained in the container,
The aromatic liquid is not present when it is not impregnated in the liquid-absorbing member.
Evaporator.

According to the present invention, in the fragrant liquid used in a volatilizer in which the fragrant liquid is impregnated into a liquid-absorbing member and evaporated, and in which the fragrant liquid is not supplied to the liquid-absorbing member during use, the average evaporation rate during the period of use is high, so that the average amount of fragrance evaporated per unit time is high, and an excellent fragrance effect can be achieved. Furthermore, according to the present invention, in the fragrant liquid used in the volatilizer, it is possible to suppress the weakening of the fragrance strength in the latter period of use, and it is possible to prevent a difference in the fragrance strength between the early and later periods of use.

The aromatic liquid of the present invention is an aromatic liquid that is impregnated into a liquid-absorbing member and evaporated, and is used in a vaporizer in which aromatic liquid is not supplied to the liquid-absorbing member during use, and is characterized in that, under specific test conditions described below, the residual rate (R) after 144 hours is 50% or less, and the value obtained by subtracting the weight loss rate ( _V2 ) from the weight loss rate ( _V1 ) from ...

[Aromatic liquid weight loss characteristics]
The fragrance liquid of the present invention satisfies the following test conditions: the residual rate after 144 hours (R) is 50% or less, and the value ( _V1 - _V2 ) obtained by subtracting the rate of weight loss ( _V2 ) from the rate of weight loss ( _V1 ) from 0-24 hours is 1.000 g/day or less. By having such characteristics, the average rate of volatilization during the period of use is high, and it is possible to reduce the difference in fragrance strength between the early and later periods of use.

From the viewpoint of setting the average volatilization rate during the usage period in a more suitable range, the residual rate (R) after 144 hours measured under the following test conditions is preferably 0 to 80%, more preferably 0 to 60%, even more preferably 0 to 50%, and particularly preferably 37 to 43%.

From the viewpoint of making it even more difficult for a difference in fragrance strength to occur between the early and later stages of use, the value (V ₁ -V ₂ ) is preferably 0.000 to 0.950 g/day, more preferably 0.500 to 0.950 g/day, even more preferably 0.750 to 0.900 g/day, and particularly preferably 0.800 to 0.900 g/day.

The weight loss rate (V ₁ ) from 0 to 24 hours is not particularly limited, so long as the 144-hour residual rate (R) and value (V ₁ -V ₂ ) satisfy the above-mentioned ranges, and examples thereof include 0.100 to 5.000 g/day, preferably 0.300 to 3.000 g/day, more preferably 0.300 to 2.000 g/day, and even more preferably 0.850 to 1.000 g/day.

The weight loss rate (V ₂ ) from 120 to 144 hours is not particularly limited, so long as the residual rate (R) after 144 hours and the value (V ₁ -V ₂ ) satisfy the ranges described above, and may be, for example, 0.010 to 1.000 g/day, preferably 0.020 to 0.500 g/day, more preferably 0.050 to 0.100 g/day, and even more preferably 0.075 to 0.100 g/day.

The remaining rate after 144 hours (R), the weight loss rate after 0 to 24 hours (V ₁ ), and the weight loss rate after 120 to 144 hours (V ₂ ) are values measured under the following test conditions.
(1) A rectangular liquid-absorbent member (liquid-absorbent felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g/cm ³ ) placed on a plate is impregnated with 3.5 mL of aromatic liquid and allowed to stand in a room at 40°C.
(2) Measure the weight of the remaining fragrance liquid at the start of leaving it still, and after 24 hours, 120 hours, and 144 hours from the start of leaving it still.
(3) Calculate the remaining rate after 144 hours R, the weight loss rate from 0 to 24 hours V ₁ , and the weight loss rate from 120 to 144 hours V ₂ according to the following formulas.
R(%)=(weight of aromatic liquid after 144 hours from the start of standing/weight of aromatic liquid at the start of standing)×100
V ₁ (g/day)=weight of the aromatic liquid at the start of standing still−weight of the aromatic liquid 24 hours after starting to stand still, and V ₂ (g/day)=weight of the aromatic liquid 120 hours after starting to stand still−weight of the aromatic liquid 144 hours after starting to stand still.

The material of the liquid-absorbing member (felt) used in (1) above is not particularly limited, but a composite fiber material of 80% by weight polyethylene terephthalate and 20% by weight rayon is preferred.

In (1) above, the indoor space at 40°C in which the liquid-absorbing member impregnated with the aromatic liquid is placed is an indoor space (e.g., a room of about 10 tatami mats) that is not exposed to direct sunlight and is adjusted to 40°C, and is not inside a closed system such as a thermostatic chamber.

In addition, in the above (2), the weight A of the plate with the liquid-absorbing member placed on it (the total weight of the liquid-absorbing member and the plate) is measured beforehand before the aromatic liquid is impregnated, and at each measurement timing, the weight B of the plate with the liquid-absorbing member impregnated with the aromatic liquid placed on it (the total weight of the aromatic liquid, the liquid-absorbing member, and the plate) is measured, and the weight of the remaining aromatic liquid can be calculated by subtracting weight A from weight B.

The weight loss characteristics described above can be achieved by appropriately adjusting the content of the fragrance and the type and content of the solvent to be blended in the fragrance liquid. If the weight loss characteristics to be achieved are determined, a person skilled in the art can prepare a fragrance liquid that satisfies the weight loss characteristics by adjusting the content of the fragrance and the type and content of the solvent.

[Composition of aromatic liquid]
The fragrance liquid of the present invention comprises a fragrance and a solvent.

The fragrance used in the aromatic liquid of the present invention may be any oil-based fragrance such as a natural fragrance, a single fragrance separated from a natural fragrance, a synthetic single fragrance, or a blend of these fragrances, and any conventionally known fragrance may be used. Specifically, examples of the single fragrance include hydrocarbon-based fragrances, alcohol-based fragrances, ether-based fragrances, aldehyde-based fragrances, acetal-based fragrances, ester-based fragrances, ketone-based fragrances, carboxylic acid-based fragrances, lactone-based fragrances, musk-based fragrances, nitrile-based fragrances, and sulfur-containing fragrances. Natural fragrances include tuberose oil, musk tincture, castoreum tincture, civet tincture, ambergris tincture, peppermint oil, perilla oil, petitgrain oil, pine oil, rose oil, rosemary oil, camphor oil, aromatic oils, clary sage oil, sandalwood oil, spearmint oil, spike lavender oil, star anise oil, lavandin oil, lavender oil, lemon oil, lemongrass oil, lime oil, neroli oil, oakmoss oil, ocotia oil, patchouli oil, and thyme oil. , tonka bean tincture, turpentine oil, crocodile bean tincture, basil oil, nutmeg oil, citronella oil, clove oil, boreal rose oil, cananga oil, cardamom oil, cassia oil, cedarwood oil, orange oil, mandarin oil, tangerine oil, anise oil, bay oil, coriander oil, elemi oil, eucalyptus oil, fennel oil, galbanum oil, geranium oil, Japanese cypress oil, cypress oil, jasmine oil, vetiver oil, bergamot oil, ylang-ylang oil, grapefruit oil, yuzu oil, etc. These fragrances may be used alone or in any combination of two or more.

The content of the fragrance in the fragrance liquid of the present invention may be appropriately set within a range that satisfies the weight loss characteristics described above depending on the type of fragrance used, the strength of the fragrance to be exhibited, etc., and may be, for example, 10 to 90% by weight, preferably 30 to 80% by weight, more preferably 50 to 80% by weight, and even more preferably 65 to 75% by weight.

The solvent used in the aromatic liquid of the present invention is not particularly limited as long as it satisfies the weight loss characteristics described above, but suitable solvents include paraffinic hydrocarbons with a vapor pressure at 20°C of 0.005 to 0.040 kPa, preferably 0.008 to 0.030 kPa, more preferably 0.009 to 0.020 kPa, and even more preferably 0.010 to 0.013 kPa. By using such paraffinic hydrocarbons, the weight loss characteristics described above can be suitably satisfied, making it possible to effectively maintain a desired fragrance strength from early to late use.

For paraffinic hydrocarbons that satisfy the above-mentioned vapor pressure range, it is also desirable that the initial boiling point at normal pressure also satisfies 218 to 257°C. By using paraffinic hydrocarbons that satisfy the above-mentioned vapor pressure range as well as the above-mentioned initial boiling point range, the weight loss characteristics described above can be more suitably satisfied, and it becomes possible to maintain the desired strength of the aroma from the early to the later stages of use in a much more effective manner.

The paraffinic hydrocarbon that satisfies the above vapor pressure range may be either isoparaffin or normal paraffin, but isoparaffin is preferred.

When a paraffinic hydrocarbon satisfying the above-mentioned vapor pressure range is used as the solvent in the aromatic liquid of the present invention, other solvents may be contained together with the paraffinic hydrocarbon, but from the viewpoint of suitably satisfying the weight loss characteristics described above, the paraffinic hydrocarbon satisfying the above-mentioned vapor pressure range should account for 40 parts by weight or more, preferably 60 parts by weight or more, more preferably 80 parts by weight or more, even more preferably 90 parts by weight or more, and particularly preferably 100 parts by weight per 100 parts by weight of the total amount of solvent.

The content of the solvent in the aromatic liquid of the present invention may be appropriately set within a range that satisfies the weight loss characteristics described above, for example, 10 to 80% by weight, preferably 20 to 70% by weight, more preferably 20 to 50% by weight, and even more preferably 25 to 35% by weight.

In addition to the above-mentioned components, the aromatic liquid of the present invention may contain other additives, as long as the above-mentioned weight loss characteristics are satisfied. Examples of such other additives include thickeners, preservatives, antioxidants, ultraviolet absorbers, colorants, etc.

[Volatilizer]
The aromatic liquid of the present invention is used in a manner in which the aromatic liquid is evaporated while impregnated into the liquid-absorbing member, using a volatilizer that does not supply aromatic liquid to the liquid-absorbing member during use.

The liquid-absorbing member that is impregnated with the aromatic liquid of the present invention and volatilizes it is not particularly limited as long as it can absorb and volatilize the aromatic liquid of the present invention. Examples of the liquid-absorbing member include fibrous materials such as natural fibers such as cotton, vegetable fibers, and pulp, synthetic fibers such as rayon, polyester, and polyethylene terephthalate, and mixtures thereof; wood materials such as wood chips, rattan, bamboo, and sora; and resin sponge materials such as urethane foam. In addition, when the volatilization member is made of a fibrous material, it is preferably a liquid-absorbent felt or nonwoven fabric, but woven fabrics, knitted fabrics, etc. may also be used. There are no particular limitations on the shape of the volatilization member, and it may be in the form of a sheet, block, rod, strip, string, etc.

The size of the liquid-absorbing member may be appropriately set depending on the space in which it is used, and may be, for example, about 1 to 20 cm ^3. In particular, when the aromatic liquid of the present invention is used inside a car, about 1 to 20 cm ³ is preferable, about 2 to 10 cm ³ is more preferable, and about 4 to 8 cm ³ is even more preferable.

The amount of the aromatic liquid of the present invention with which the liquid-absorbing member is impregnated may be appropriately set depending on the type of liquid-absorbing member used. For example, the amount of the liquid-absorbing member impregnated may be 0.05 to 2 ml, preferably 0.1 to 1.0 ml, and more preferably 0.3 to 0.7 ml per ¹ cm3 of the liquid-absorbing member.

The volatilizer for evaporating the aromatic liquid of the present invention may have a structure in which a liquid-absorbing member impregnated with the aromatic liquid of the present invention is housed in a container having an opening. In the volatilizer for evaporating the aromatic liquid of the present invention, aromatic liquid is not supplied to the liquid-absorbing member during use (while the aromatic liquid is evaporating), so the aromatic liquid in the container is not stored in a state where it is not impregnated in the liquid-absorbing member, but exists only in a state where it is impregnated in the liquid-absorbing member.

[Provision mode]
The aromatic liquid of the present invention may be provided as a set with a container and a liquid-absorbing member which are components of the volatilizer, or may be provided as a refill aromatic liquid, either alone or in a set with a liquid-absorbing member.

[Application]
The aromatic liquid of the present invention is used to impart fragrance to spaces such as the interior of a car and living spaces (living room, entrance, toilet, etc.). The aromatic liquid of the present invention exists in a state where the entire liquid is impregnated in the liquid absorbing member in the volatilizer, and does not spill out of the volatilizer even if it is vibrated or shaken, so it is particularly suitable for use in the interior of a car. In addition, the temperature inside a car changes greatly, and in the case of an aromatic liquid that volatilizes while sucking up the chemical solution stored in the volatilizer with the liquid absorbing member, the air in the head space in the volatilizer expands when the temperature rises, and the aromatic liquid may spray out and soil the surroundings. However, the aromatic liquid of the present invention exists in a state where the entire liquid is impregnated in the liquid absorbing member in the volatilizer, so the aromatic liquid almost never sprays out of the volatilizer. From this point of view, the aromatic liquid of the present invention can be said to be suitable for use in the interior of a car.

The volatilizer of the present invention comprises the aromatic liquid, a liquid-absorbing member, and a container having an opening, and the container contains the liquid-absorbing member impregnated with the aromatic liquid, and the aromatic liquid does not exist unless it is impregnated in the liquid member.

The aromatic liquid, absorbing member, container, etc. used in the volatilizer of the present invention are as described in the section "1. Aromatic liquid" above.

The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto. The characteristics, sources of acquisition, etc. of the components used in the following examples and comparative examples are as follows.
Fragrance : Rose-like oil fragrance
Isoparaffin A : Trade name "Isopar M", manufactured by ExxonMobil Corporation; vapor pressure at 20°C is 0.0115 kPa, initial boiling point is 225°C
Polyoxyethylene (10) octylphenyl ether : Trade name "Polyoxyethylene (10) octylphenyl ether", Fujifilm Wako Pure Chemical Industries, Ltd.; vapor pressure at 20°C is 0.001 kPa
Isoparaffin B : Trade name "IP Solvent 2835", Idemitsu Kosan Co., Ltd.; vapor pressure at 20°C is 0.002 kPa, initial boiling point is 277 to 353°C
Dipropylene glycol monomethyl ether : Trade name "Dowanol DPM", The Dow Chemical Company; vapor pressure at 25°C is 0.053 kPa
Isoparaffin C : Trade name "Isopar G", (manufactured by Exxon Mobil Corporation); vapor pressure at 20°C is 0.2049 kPa, initial boiling point is 153 to 257°C

Test Example 1
The aromatic liquids shown in Table 1 were prepared, and the weight loss rates of the liquid-absorbent members impregnated with the aromatic liquids were measured. Specifically, under the following test conditions, the residual rate after 144 hours (R), the weight loss rate from 0 to 24 hours (V ₁ ), and the weight loss rate from 120 to 144 hours (V ₂ ) were measured, and the value (V ₁ -V ₂ ) was calculated by subtracting the weight loss rate from 0 to 24 hours (V ₁ ) from the weight loss rate from 120 to 144 hours (V ₂ ).
(1) A rectangular liquid-absorbent member (liquid-absorbent felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.12 g/ ^m3 , composite fiber material of 80% by weight polyethylene terephthalate and 20% by weight rayon; product name "E-6H", manufactured by Yoneshima Felt Sangyo Co., Ltd.) was placed on a plate and impregnated with 3.5 mL of aromatic liquid. The material was then left to stand at a temperature of 40°C in a room (a room of approximately 10 tatami mats) away from direct sunlight.
(2) At the start of leaving the liquid-absorbent member, and 24 hours, 120 hours, and 144 hours after leaving the liquid-absorbent member, the weight of the plate on which the liquid-absorbent member was placed was measured, and the weight of the plate and the liquid-absorbent member (not impregnated with aromatic liquid) was subtracted to determine the weight of the aromatic liquid impregnated in the liquid-absorbent member.
(3) The remaining rate after 144 hours R, the weight loss rate from 0 to 24 hours V ₁ , and the weight loss rate from 120 to 144 hours V ₂ were calculated according to the following formulas.
R(%)=(weight of aromatic liquid after 144 hours from the start of standing still/weight of aromatic liquid at the start of standing still)×100
V ₁ (g/day)=weight of the aromatic liquid at the start of standing still−weight of the aromatic liquid 24 hours after starting to stand still, and V ₂ (g/day)=weight of the aromatic liquid 120 hours after starting to stand still−weight of the aromatic liquid 144 hours after starting to stand still.

In addition, in the above test, the fragrance strength at the start of the test and the difference in fragrance strength between the start of the test and 144 hours later were evaluated by one expert panelist trained in fragrance evaluation according to the following criteria.

<Scent strength at the start of the test>
○: The fragrance is fully felt.
×: The fragrance is detectable, but is somewhat weak and unsatisfying.

<Difference in scent intensity between the start of the test and 144 hours later>
○: The fragrance strength after 144 hours is slightly weaker than at the start of the test, but there is no significant difference in fragrance strength between the start of the test and 144 hours later.
×: The strength of the fragrance after 144 hours is clearly weaker than at the start of the test, and a large difference in fragrance strength can be felt between the start of the test and 144 hours later.

The results are shown in Table 1. In the fragrance liquids of Comparative Examples 1 and 2, the value (V ₁ -V ₂ ) was 1.000 g/day or less, and the difference in the rate of loss of the fragrance liquid between the early period of use (up to 24 hours) and the later period of use (from 120 hours to 144 hours) was small, and the weakening of the fragrance in the later period of use was suppressed, but the residual rate (R) after 144 hours exceeded 50%, and the average evaporation rate during the period of use (i.e., the average amount of fragrance evaporated per unit time) was low. In the fragrance liquids of Comparative Examples 3 and 4, the residual rate (R) after 144 hours was 50% or less, and the average evaporation rate during the period of use was high, but the value (V ₁ -V ₂ ) exceeded 1.000 g/day, and there was a strong tendency for the fragrance to weaken in the later period of use compared to the early period of use. In contrast, the fragrance liquid of Example 1 had a residual rate (R) of 50% or less after 144 hours, a high average evaporation rate during the period of use, and a value ( _V1 - _V2 ) of 1.000 g/day or less. The difference in the rate of loss of the fragrance liquid between the early and later periods of use was small, and the weakening of the scent in the later periods of use was suppressed.

Claims (4)

The aromatic liquid is impregnated into a liquid-absorbing member and evaporated, and the aromatic liquid is not supplied to the liquid-absorbing member during use, and the aromatic liquid is used in an evaporator (excluding those having a heater) that is installed indoors,
Contains 65 to 90% by weight of a fragrance and 10 to 35% by weight of a solvent;
The residual rate (R) after 144 hours measured under the following test conditions is 50% or less, and the value obtained by subtracting the weight loss rate ( _V2 ) from the weight loss rate ( _V1 ) from 0 to 24 hours is 1.000 g/day or less.
<Test conditions>
(1) A rectangular liquid-absorbing member (felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g/cm ³ ) placed on a plate was impregnated with 3.5 mL of aromatic liquid and allowed to stand in a room at 40°C.
(2) Measure the weight of the remaining fragrance liquid at the start of leaving it still, and after 24 hours, 120 hours, and 144 hours from the start of leaving it still.
(3) Calculate the remaining rate after 144 hours R, the weight loss rate from 0 to 24 hours V ₁ , and the weight loss rate from 120 to 144 hours V ₂ according to the following formulas.
R(%)=(weight of aromatic liquid after 144 hours from the start of standing/weight of aromatic liquid at the start of standing)×100
V ₁ (g/day)=weight of the aromatic liquid at the start of standing still−weight of the aromatic liquid 24 hours after starting to stand still, and V ₂ (g/day)=weight of the aromatic liquid 120 hours after starting to stand still−weight of the aromatic liquid 144 hours after starting to stand still. The aromatic liquid according to claim 1, wherein the solvent is a paraffinic hydrocarbon having a vapor pressure of 0.005 to 0.040 kPa at 20°C. 3. The aromatic liquid according to claim 1 or 2 , which is for use in the interior of an automobile. The aromatic liquid according to any one of claims 1 to 3 , a liquid-absorbing member, and a container having an air hole,
The liquid-absorbing member impregnated with the aromatic liquid is contained in the container,
The aromatic liquid is not present when it is not impregnated in the liquid-absorbing member.
A volatilizer that is installed indoors (excluding those with heaters).