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아세탈

아세탈
아세탈 구조식 이미지
카스 번호:
105-57-7
한글명:
아세탈
동의어(한글):
아세트알데히드;아세탈
상품명:
Acetal
동의어(영문):
ACETAL;acetaal;Acetale;AT-20GF;NSC 7624;Aceton NS;usafdo-45;FEMA 2002;Acetal>Acetron GP
CBNumber:
CB5852662
분자식:
C6H14O2
포뮬러 무게:
118.17
MOL 파일:
105-57-7.mol

아세탈 속성

녹는점
-100 °C
끓는 점
103 °C
밀도
0.831 g/mL at 25 °C(lit.)
증기 밀도
4.1 (vs air)
증기압
20 mm Hg ( 20 °C)
굴절률
n20/D 1.379-1.383(lit.)
FEMA
2002 | ACETAL
인화점
-6 °F
저장 조건
Store at +2°C to +8°C.
용해도
46g/l
물리적 상태
Liquid
색상
Clear colorless
폭발한계
1.6-10.4%(V)
수용성
46 g/L (25 ºC)
Merck
14,38
JECFA Number
941
BRN
1098310
안정성
Stable. Highly flammable. May form peroxides in storage. Test for peroxides before use. Vapors may form an explosive mixture with air, and may travel to source of ignition and flash back. Vapors may spread along ground and collect in low or confined areas (sewers, basements, tanks).
InChIKey
DHKHKXVYLBGOIT-UHFFFAOYSA-N
CAS 데이터베이스
105-57-7(CAS DataBase Reference)
NIST
Ethane, 1,1-diethoxy-(105-57-7)
EPA
Diethyl acetal (105-57-7)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 F,Xi
위험 카페고리 넘버 11-36/38
안전지침서 9-16-33
유엔번호(UN No.) UN 1088 3/PG 2
WGK 독일 2
RTECS 번호 AB2800000
자연 발화 온도 446 °F &_& 446 °F
TSCA Yes
위험 등급 3
포장분류 II
HS 번호 29110000
유해 물질 데이터 105-57-7(Hazardous Substances Data)
독성 LD50 orally in rats: 4.57 g/kg (Smyth)
기존화학 물질 KE-10342
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H225 고인화성 액체 및 증기 인화성 액체 구분 2 위험 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H303 삼키면 유해할 수 있음 급성 독성 물질 - 경구 구분 5 P312
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P337+P313 눈에 대한 자극이 지속되면 의학적인 조치· 조언를 구하시오.
P403+P235 환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.
NFPA 704
3
1 0

아세탈 MSDS


1,1-Diethoxyacetal

아세탈 C화학적 특성, 용도, 생산

개요

Acetal is a clear, colourless, and extremely flammable liquid with an agreeable odour. The vapour is susceptible to cause flash fire. Acetal is sensitive to light and, on storage, may form peroxides. In fact, it has been reported to be susceptible to autoxidation and should, therefore, be classified as peroxidisable. Acetal is incompatible with strong oxidising agents and acids.

화학적 성질

clear, colorless liquid

화학적 성질

Acetal is a clear, colorless, and extremely fl ammable liquid with an agreeable odor. The vapor may cause fl ash fi re. Acetal is sensitive to light and on storage may form peroxides. In fact, it has been reported to be susceptible to autoxidation and should, therefore, be classifi ed as peroxidizable. Acetal is incompatible with strong oxidizing agents and acids.

화학적 성질

Acetal, an aldehyde, is a clear, volatile liquid with an agreeable odor

화학적 성질

Acetal.has.a.refreshing,.pleasant,.fruity-green.odor

출처

Present.in.some.liquors.(e.g.,.sake,.whiskey.and.cognac);.also.detected.and.quantitatively.assessed.in.rums.. Found.in.apple.juice,.orange.juice,.orange.peel.oil,.bitter.orange.juice,.strawberry.fruit,.raw.radish,.Chinese.quince.fruit,.Chinese. quince.flesh,.udo.(Aralia cordata Thunb.)

용도

Acetaldehyde diethyl acetal is used as a flavoring agent to provide fruit, nut, rum, and whiskey flavors.

용도

Solvent; in synthetic perfumes such as jasmine; in organic syntheses.

정의

A type of organic compound formed by addition of an alcohol to an aldehyde. Addition of one alcohol molecule gives a hemiacetal. Further addition yields the full acetal. Similar reactions occur with ketones to produce hemiketals and ketals.

제조 방법

From.ethyl.alcohol.and.acetaldehyde.in.the.presence.of.anhydrous.calcium.chloride.or.small.amounts.of.mineral. acids.(HCl).

Aroma threshold values

Detection:.4.to.42.ppb

일반 설명

A clear colorless liquid with a pleasant odor. Boiling point 103-104°C. Flash point -5°F. Density 0.831 g / cm3. Slightly soluble in water. Vapors heavier than air. Moderately toxic and narcotc in high concentrations.

공기와 물의 반응

Highly flammable. Forms heat-sensitive explosive peroxides on contact with air. Slightly soluble in water.

반응 프로필

Acetal can react vigorously with oxidizing agents. Stable in base but readily decomposed by dilute acids. Forms heat-sensitive explosive peroxides on contact with air. Old samples have been known to explode when heated due to peroxide formation [Sax, 9th ed., 1996, p. 5].

건강위험

May irritate the upper respiratory tract. High concentrations act as a central nervous system depressant. Symptoms of exposure include headache, dizziness, drowsiness, abdominal pain, and nausea.

건강위험

Mild irritant to skin and eyes; acute toxicityof low order; narcotic at high concentrations;4-hour exposure to 4000 ppm lethal to mice;the oral LD50 value for mice is 3500 mg/kg.

건강위험

Exposures to acetal cause irritation to the eyes, skin, gastrointestinal tract, nausea, vomit- ing, and diarrhea. In high concentrations, acetal produces narcotic effects in workers.

화재위험

Highly flammable; flash point (closed cup) -21°C (-6°F); vapor density 4.1 (air = 1), vapor heavier than air and can travel some distance to a source of ignition and flash back; autoignition temperature 230°C (446°F); vapor forms explosive mixtures with air, LEL and UEL values are 1.6% and 10.4% by volume in air, respectively (DOT Label: Flammable Liquid, UN 1088). .

공업 용도

Acetal homopolymer resins have high tensilestrength, stiffness, resilience, fatigue endurance,and moderate toughness under repeatedimpact. Some tough grades can deliver up to 7times greater toughness than unmodified acetalin Izod impact tests and up to 30 times greatertoughness as measured by Gardner impact tests.
Automotive applications of acetal homopolymerresins include fuel-system and seat-beltcomponents, steering columns, window-supportbrackets, and handles. Typical plumbingapplications that have replaced brass or zinccomponents are showerheads, ball cocks, faucetcartridges, and various fittings. Consumer itemsinclude quality toys, garden sprayers, stereocassette parts, butane lighter bodies, zippers,and telephone components. Industrial applicationsof acetal homopolymer include couplings,pump impellers, conveyor plates, gears, sprockets,and springs.

Safety Profile

Moderately toxic by ingestion, inhalation, and intraperitoneal routes.A skin and eye irritant. A narcotic. Dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. Forms heat-sensitive explosive peroxides on contact with air. when heated to decomposition it emits acrid smoke and fumes. See also ETHERS and ALDEHYDES.

잠재적 노출

Used as a solvent; in synthetic perfumes, such as jasmine, cosmetics, flavors; in organic synthesis.

신진 대사

When acetal was fed at a level of 5% in the diet for 6 days, availability of energy was 64% in chicks and 29% in rats (Yoshida et al. 1970 & 1971). Acetal is rapidly hydrolysed in the stomach(Knoefel, 1934). The resulting acetaldehyde is readily oxidized to acetic acid and eventually to carbon dioxide and water(Williams, 1959).

운송 방법

UN1088 Acetal, Hazard Class: 3; Labels: 3-Flammable liquid. UN1988 Aldehydes, flammable, toxic, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid, 6.1-Poisonous materials, Technical Name Required

Purification Methods

Dry acetal over Na to remove alcohols and H2O, and to polymerise aldehydes, then fractionally distil. Or, treat it with alkaline H2O2 at 40-45o to remove aldehydes, then saturate with NaCl, separate, dry with K2CO3 and distil it from Na [Vogel J Chem Soc 616 1948]. [Beilstein 1 IV 3103.]

비 호환성

Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation. Presumed to form explosive peroxides on contact with air and light. May accumulate static electrical charges, and may cause ignition of its vapors.

폐기물 처리

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

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