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황화디메틸

황화디메틸
황화디메틸 구조식 이미지
카스 번호:
75-18-3
한글명:
황화디메틸
동의어(한글):
다이메틸설파이드;황화디메틸;다이메틸 설파이드
상품명:
Dimethyl sulfide
동의어(영문):
DMS;fide;ME2S;(CH3)2S;Exact-S;FEMA 2746;Thiopropane;2-THIAPROPANE;2-Thiopropane;thiobis-methan
CBNumber:
CB6478393
분자식:
C2H6S
포뮬러 무게:
62.13
MOL 파일:
75-18-3.mol

황화디메틸 속성

녹는점
−98 °C(lit.)
끓는 점
38 °C(lit.)
밀도
0.846 g/mL at 25 °C(lit.)
증기 밀도
2.1 (vs air)
증기압
26.24 psi ( 55 °C)
굴절률
n20/D 1.435(lit.)
FEMA
2746 | METHYL SULFIDE
인화점
−34 °F
저장 조건
Store at +2°C to +8°C.
용해도
Miscible with alcohols, ethers, esters, ketones, aliphatic and aromatic hydrocarbons. Slightly miscible with
물리적 상태
Liquid
색상
Clear colorless
Specific Gravity
0.849 (20/4℃)
냄새
Ethereal, permeating; disagreeable; offensive.
Odor Threshold
0.003ppm
폭발한계
2.2-19.7%(V)
JECFA Number
452
Merck
14,6123
BRN
1696847
안정성
Stable. Incompatible with strong oxidizing agents. Highly flammable - note low boiling point, low flash point, and wide explosion limits. Mixtures with air are potentially explosive. Incompatible with strong oxidizing agents. Use in UK regulated by LPG Regulations 1978 in accordance with HSE guidance note CS17.
InChIKey
QMMFVYPAHWMCMS-UHFFFAOYSA-N
CAS 데이터베이스
75-18-3(CAS DataBase Reference)
NIST
Dimethyl sulfide(75-18-3)
EPA
Dimethyl sulfide (75-18-3)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 F,Xn,Xi
위험 카페고리 넘버 11-22-37/38-41-36
안전지침서 7-9-16-29-33-36/39-26
유엔번호(UN No.) UN 1164 3/PG 2
WGK 독일 1
RTECS 번호 PV5075000
F 고인화성물질 13
자연 발화 온도 402 °F
TSCA Yes
HS 번호 2930 90 98
위험 등급 3
포장분류 II
유해 물질 데이터 75-18-3(Hazardous Substances Data)
독성 LD50 orally in Rabbit: 535 mg/kg LD50 dermal Rabbit > 5000 mg/kg
기존화학 물질 KE-33766
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
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P233 용기를 단단히 밀폐하시오. 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 보관하시오.
P240 용기와 수용설비를 접지 및 접합시키시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
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.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P405 밀봉하여 저장하시오.
P403+P235 환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.
NFPA 704
4
2 0

황화디메틸 C화학적 특성, 용도, 생산

개요

Methyl sulfide has an unpleasant odor of wild radish that is cabbage- like. It can be tolerated as a green vegetable note only at very low levels (0.1 - 3.0 ppm). It may be produced by reaction of potassium sulfide with methyl chloride in methanol solution; from potassium methyl sulfate and potassium sulfide.

화학적 성질

Methyl sulfide has an intense, unpleasant odor, wild radish, cabbage-like. It can be tolerated as a green vegetable note only at very low levels (0.1 to 3.0 ppm

화학적 성질

Clear colorless liquid

출처

Reported found in American peppermint oil, the oil of Algerian geranium, mint fractions, butter, orange, orange juice and grapefruit juice, black currant, berries, asparagus, kohlrabi, cabbage, carrot, celery, onion, garlic, peas, potato, rutabaga, sauerkraut, tomato, Scotch spearmint oil, parsley, wheat bread, many cheeses, yogurt, milk, cream, buttermilk, raw and cooked egg, fish, chicken, cooked beef, mutton, pork liver, hop oil, beer, cognac rum, grape wines, sherry, tea, roasted filberts and peanuts, oats, soybean, olive, beans, mushroom, starfruit, trassi, Bantu beer, macadamia nut, mango, cauliflower, Brussels sprouts, rice, sake, buckwheat, sweet corn, malt, wort, dried bonito, krill, shrimp, oysters, truffle, okra, crab, clam and scallop

용도

Sulfiding agent.

정의

ChEBI: A methyl sulfide in which the sulfur atom is substituted by two methyl groups. It is produced naturally by some marine algae.

제조 방법

By reaction of potassium sulfide with methyl chloride in methanol solution; from potassium methyl sulfate and potassium sulfide

Aroma threshold values

Detection: 0.3 to 10 ppb. Aroma characteristics at 0.5%: sulfureous, dimethyl sulfide, creamy, tomato, fishy, scallop, berry fruity and vegetative nuances

Taste threshold values

Taste characteristics at 1 to 5 ppm: sulfureous, vegetative tomato, sweet, creamed corn, corn and asparagus with a dairy creaminess and a slight minty afternote, alliaceous.

일반 설명

A clear colorless to straw colored liquid with a disagreeable odor. Flash point less than 0°F. Less dense than water and slightly soluble in water. Vapors are heavier than air.

공기와 물의 반응

Highly flammable. Slightly soluble in water.

반응 프로필

Organosulfides, such as Dimethyl sulfide, are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Dimethyl sulfide rapidly decomposes dibenzoyl peroxide explosively in the absence of solvent, [J. Org. Chem., 1972, 37, 2885]. The sulfide also decomposes xenon difluoride explosively at ambient temps, [J, Chem Soc., 1984, 2827]. Interaction of Dimethyl sulfide and oxygen is explosive at 210°C and above, [Atmos. Environ., 1967, 1, 491-497]. A delayed explosion occurred in a system containing nitric acid, Dimethyl sulfide, and 1, 4-dioxane, even with cooling with liquid nitrogen, [Chem. Abs., 1972, 76, 13515].

건강위험

Inhalation causes moderate irritation of upper respiratory system. Contact of liquid with eyes causes moderate irritation. Repeated contact with skin may extract oils and result in irritation. Ingestion causes nausea and irritation of mouth and stomach.

화학 반응

Reactivity with Water : No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Poison by inhalation. Moderately toxic by ingestion. A skin and severe eye irritant. A very dangerous fire hazard when exposed to heat or flame. Explosive in the form of vapor when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits highly toxic fumes of SOx and may explode. See also SULFIDES.

Purification Methods

Purify dimethyl sulfide via the Hg(II) chloride complex by dissolving 1 mole of Hg(II)Cl2 in 1250mL of EtOH and slowly adding the boiling alcoholic solution of Me2S to give the right ratio for 2(CH3)2S.3HgCl2. After recrystallisation of the complex to constant melting point, 500g of complex is heated with 250mL conc HCl in 750mL of water. The sulfide is separated, washed with water, and dried with CaCl2 and CaSO4. Finally, it is distilled under reduced pressure from sodium. Precautions should be taken (efficient fume hood) because of its very UNPLEASANT ODOUR.[Beilstein 1 IV 1275.]

황화디메틸 준비 용품 및 원자재

원자재

준비 용품


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