イソバレルアルデヒド

Fire Extinguishing Agents Not to Be Used: Water may be ineffective.

Use dry sand, carbon dioxide, dry powder. NO water. In case of fire: keep drums, etc., cool by spraying with water.

Fresh air, rest.

Rinse and then wash skin with water and soap.

Rinse with plenty of water (remove contact lenses if easily possible).

Rinse mouth. Do NOT induce vomiting.

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Use "alcohol" foam, dry chemical or carbon dioxide. Keep run-off water out of sewers and water sources.

Materials which are toxic as stored or which can decompose into toxic components...should be stored in a cool, well ventilated place, out of the direct rays of the sun, away from areas of high fire hazard, and should be periodically inspected. Incompatible materials should be isolated...

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.

Personnel protection: Avoid breathing vapors. Keep upwind. Wear appropriate chemical protective gloves, boots and goggles. Do not handle broken packages unless wearing appropriate personal protective equipment If contact with the material anticipated, wear appropriate chemical protective clothing.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

LC50; Species: Pimephales promelas (Fathead minnow, age 30 days, mean length 20.4 mm, mean weight 0.127 g); Conditions: flow through, 23.9 °C pH 7.58, hardness 49.3 mg/L CaCO3, alkalinity 47.8 mg/L CaCO3, dissolved oxygen 6.9 mg/L; Concentration: 3.25 mg/L for 96 hr (95% confidence limit: 2.98-3.54 mg/L) /97.3% purity/

EC50; Species: Pimephales promelas (Fathead minnow, age 30 days, mean length 20.4 mm, mean weight 0.127 g); Conditions: flow through, 23.9 °C pH 7.58, hardness 49.3 mg/L CaCO3, alkalinity 47.8 mg/L CaCO3, dissolved oxygen 6.9 mg/L; Concentration: 3.25 mg/L for 96 hr (95% confidence limit: 2.98-3.54 mg/L); Effect: Affected fish lost schooling behavior, swam near the surface, were hyperactive, had increased respiration and edema. Equilibrium loss was not observed prior to death. /97.3% purity/

LC50; Species Leuciscus idus (Ide); Conditions: static; Concentration 53 mg/L for 96 hr

LC50; Species Poecilia reticulata (Guppy); Conditions: semi-static; Concentration 13.3 mg/L for 14 days

For more Ecotoxicity Values (Complete) data for 3-METHYLBUTANAL (11 total), please visit the HSDB record page.

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 23(SRC), determined from a water solubility of 1.4X10+4 mg/L(2) and a regression-derived equation(3), indicates that 3-methylbutanal is expected to have very high mobility in soil(SRC). Volatilization of 3-methylbutanal from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 4.0X10-4 atm-cu m/mole(SRC), derived from its vapor pressure, 50 mm Hg(4), and its water solubility(2). 3-Methylbutanal is expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(4). A theoretical oxygen demand of 16.1% after 24 hrs in a waste treatment plant(5) suggests that biodegradation may be an important environmental fate process in soil(SRC).

AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 23(SRC), determined from a water solubility of 1.4X10+4 mg/L(2) and a regression-derived equation(3), indicates that 3-methylbutanal is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon a Henry's Law constant of 4.0X10-4 atm-cu m/mole(SRC), derived from its vapor pressure, 50 mm Hg(4), and water solubility(2). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 5 hours and 4 days, respectively(SRC). According to a classification scheme(5), an estimated BCF of 3(SRC), from its water solubility(2) and a regression-derived equation(3), suggests the potential for bioconcentration in aquatic organisms is low(SRC). 3-Methylbutanal is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(3). A theoretical oxygen demand of 16.1% after 24 hrs in a waste treatment plant(6) suggests that biodegradation may be an important environmental fate process in water(SRC).

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 3-methylbutanal, which has a vapor pressure of 50 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 3-methylbutanal is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 14 hours(SRC), calculated from rate constants of 2.78X10-11(3) and 2.74X10-11(4) cu cm/molecule-sec at 25 °C. Vapor-phase 3-methylbutanal is also degraded in the atmosphere by reaction with photochemically-produced nitrate radicals; the half-life for this reaction in air is estimated to be 44 hours(SRC), calculated from rate constant of 1.82X10-14 cu cm/sec(3). Aliphatic aldehydes absorb available solar radiation and dissociate to produce free radical fragments(5); therefore 3-methylbutanal may be susceptible to direct photolysis by sunlight(SRC).

3-Methylbutanal has been detected in coffee aroma(1), in the extract of edible Korean Chamchwi(2), in blue cheese aroma(3), as a flavor constituent in gari(4), as a volatile component of Beaufort cheese(5), in cured pork(6), in bacon pork, smoke, and flavor(7) in roasted filberts(8), in chick pea(9), in volatiles from pork, mutton, chicken and beef(10) in beef sukiyaki from the beef and soy sauce(11), in Italian-type dry-cured ham(12), and in fried chicken(13). 3-Methylbutanal has also been detected as a flavor volatile from cooked sweet corn at the following concns: canned cream corn (10 ppb), canned kernel (19 ppb), frozen kernel (7 ppb), and fresh kernel (<4 ppb)(14). 3-Methylbutanal has been found as a volatile component of scrambled eggs using eggs from the supermarket packed in polystyrene (122 ng/g), fresh eggs, not stored (126 ng/g), and fresh eggs stored in polystyrene for two weeks (16 ng/g)(15). 3-Methylbutanal was also found as a volatile component of polystyrene egg cartons(15). 3-Methylbutanal was found in popcorn using wet extraction method at 1200 ug/kg and dry extraction method at 430 ug/kg(16). Commercial rice cakes were found to contain 440-620 ppb of 3-methylbutanal(17). 3-Methylbutanal was measured at 9720 ng/g, 77,100 ng/g, 22,100 ng/g and 12,400 ng/g in anchovy paste, big eyed herring paste, hair tail viscera paste, and shrimp paste, respectively(18). 3-Methylbutanal was detected in whole and ground musty sorghum with direct helium-purge method and with supercritical fluid extraction method(19).

Sore throat. Cough.

Redness.

Redness.

3-Methylbutanal was found in biodegradable household waste headspace and in of mixed household waste headspace at concns of <0.1 mg/cu m(1). 3-Methylbutanal was found in highway tunnels in Tuscarora; light duty trucks emitted 0.01 mg/km traveled or 0.150 mg/L fuel used, heavy duty trucks emitted 0.103 mg/km traveled or 0.325 mg/L fuel used(2). Laboratory scale composting emissions contained 3-methylbutanal after two days(3). 3-Methylbutanal was measured in the emissions of gasoline powered motor vehicles at a rate of 250 ug/km and 22,080 ug/km for catalyst equipped engines and non-catalyst equipped engines(4). 3-Methylbutanal was detected in the off gas from 12 weeks of aerobic composting at a concn of 4.0 mg/cu m and after 3 week anaerobic/2 week aerobic composting at a concn of 1.0-5.5 mg/cu m(5). 3-Methylbutanal was detected but not quantified in the emissions of kitchen waste, kitchen waste exudate, stored food exudate, building materials with microbial growth(6), garbage truck headspace, waste headspace in the laboratory, and other waste exudate(7). 3-Methylbutanal was detected in the emissions of cookstoves in China using wheat crop residue, wood, coal, kerosene, liquid propane gas, and natural gas at concns of 8.2, 6.8, 2.8, 9.3, 11.5, and 4.2 mg/kg, respectively(8). 3-Methylbutanal has been reported in exhaust gases from gasoline engines(9). 3-Methylbutanal is emitted at a rate of 5 mg/km in heavy-duty diesel exhaust, sampled in Stockholm, Sweden(10).

The Koc of 3-methylbutanal is estimated as 23(SRC), using a water solubility of 1.4X10+4 mg/L(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 3-methylbutanal is expected to have very high mobility in soil.

URBAN/SUBURBAN: 3-Methylbutanal, was not detected at Patission Street, Athens, Greece nor Likovrisi, Greece, sampled from June to December 2000(1). 3-Methylbutanal was detected at average concns of 3.426-20.627 ug/cu m in Rio de Janeiro, Brazil Oct 1999 to Nov 2000(2). 3-Methylbutanal was detected in 13 of 13 samples taken across the US (3 in LA, 4 in TX, 5 in VT, 1 in NJ) from Sept 1996 to Aug 1997 at <1 ppb(3). 3-Methylbutanal was detected in 4 of 8 winter and 2 of 18 summer samples at 0.0-0.10 ppb and 0.01-0.08 ppb taken in the greater Boston, MA area in 1993(4). 3-Methylbutanal was detected in Santiago, Chile atmospheric samples at <0.04-0.19 ppbv in Nov 2003(5). 3-Methylbutanal has been found in air at avg concns of 0.22, 0.04, and 0.04 ppb on two busy streets and a calm street in Stockholm, Sweden(6).

INDOOR AIR: 3-Methylbutanal was detected in 13 of 14 winter and 7 of 26 summer samples at 0.04-1.1 ppb and 0.0-1.0 ppb taken in the greater Boston, MA area in 1993(1). 3-Methylbutanal was detected in indoor and outdoor air from suburban New Jersey residential microenvironments at mean concns of 0.37 ppb indoors (kitchen area) and 0.41 ppb outdoors (backyard)(2).

RURAL/REMOTE: 3-Methylbutanal was detected on a small island in Stockholm, Sweden and a recreation area 12 km from Stockholm at 0.05 ppb(1).

Isovaleraldehyde is a food additive permitted for direct addition to food for human consumption as a synthetic flavoring substance and adjuvant in accordance with the following conditions: 1) the quantity added to food does not exceed the amount reasonably required to accomplish its intended physical, nutritive, or other technical effect in food, and 2) when intended for use in or on food it is of appropriate food grade and is prepared and handled as a food ingredient.

Section 8(a) of TSCA requires manufacturers of this chemical substance to report preliminary assessment information concerned with production, exposure, and use to EPA as cited in the preamble in 51 FR 41329. Effective date 9/30/91; Reporting date: 11/27/91.

Pursuant to section 8(d) of TSCA, EPA promulgated a model Health and Safety Data Reporting Rule. The section 8(d) model rule requires manufacturers, importers, and processors of listed chemical substances and mixtures to submit to EPA copies and lists of unpublished health and safety studies. Butanal, 3-methyl- is included on this list. Effective date 9/30/91; Sunset date: 6/30/98.

Found in orange, lemon, peppermint, and other oils; [Merck Index] Used flavors, fragrances, and to make isovaleric acid, pharmaceuticals, and resins; [HSDB] Used to make pesticides, solvents, and softeners; [eChemPortal: SIDSUNEP]

Reported uses (PPM): (FEMA, 2005)

FLAVOR INGREDIENT; FRAGRANCE INGREDIENT IN PERFUMES; CHEM INT FOR ISOVALERIC ACID

Flavoring, perfumes, pharmaceuticals, synthetic resins.

2023: 75,000 - <500,000 lb

Production volumes for non-confidential chemicals reported under the Inventory Update Rule. [Table#1745]

REACTION OF BUTENES WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A COBALT CATALYST (OXO PROCESS), FOLLOWED BY SEPARATION OF ISOMERS; OXIDATION OF ISOAMYL ALCOHOL WITH SODIUM DICHROMATE AND SULFURIC ACID

Made by oxidation of isoamyl alcohol with Na2Cr2O7 and H2SO4.

3-Methylbutanal ... is prepared by hydroformylation of isobutene.

Fragrance Ingredients

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

Flavoring Agents -> JECFA Flavorings Index

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

All Other Basic Organic Chemical Manufacturing

Butanal, 3-methyl-: ACTIVE