메틸알콜
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메틸알콜 속성
- 녹는점
- -98 °C(lit.)
- 끓는 점
- 65.4 °C(lit.)
- 밀도
- 0.791 g/mL at 25 °C
- 증기 밀도
- 1.11 (vs air)
- 증기압
- 410 mm Hg ( 50 °C)
- 굴절률
- n
20/D 1.329(lit.)
- 인화점
- 52 °F
- 저장 조건
- 2-8°C
- 용해도
- benzene: miscible(lit.)
- 산도 계수 (pKa)
- 15.2(at 25℃)
- 물리적 상태
- Liquid Free From Particulates
- 색상
- <10(APHA)
- Specific Gravity
- 0.793 (20/20℃)
- 상대극성
- 0.762
- 냄새
- Faint alcohol odor detectable at 4 to 6000 ppm (mean = 160 ppm)
- 폭발한계
- 5.5-44%(V)
- Odor Threshold
- 33ppm
- 수용성
- miscible
- 최대 파장(λmax)
- λ: 210 nm Amax: 0.50
λ: 220 nm Amax: 0.30
λ: 230 nm Amax: 0.15
λ: 235 nm Amax: 0.10
λ: 240 nm Amax: 0.05
λ: 260 nm Amax: 0.01
λ: 400 nm Amax: 0.01
- Merck
- 14,5957
- BRN
- 1098229
- Henry's Law Constant
- 4.99 at 25 °C (headspace-GC, Gupta et al., 2000)
- 노출 한도
- TLV-TWA (200 ppm) (ACGIH), 260mg/m3, 1040mg/m3 (800 ppm) 15minutes (NIOSH); STEL 310mg/m3 (250 ppm); IDLH 25,000 ppm (NIOSH).
- LogP
- -0.770
- CAS 데이터베이스
- 67-56-1(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn,T,F | ||
---|---|---|---|
위험 카페고리 넘버 | 10-20/21/22-68/20/21/22-39/23/24/25-23/24/25-11-40-36-36/38-23/25 | ||
안전지침서 | 36/37-7-45-16-24/25-23-24-26 | ||
유엔번호(UN No.) | UN 1170 3/PG 2 | ||
WGK 독일 | 1 | ||
RTECS 번호 | PC1400000 | ||
F 고인화성물질 | 3-10 | ||
자연 발화 온도 | 385 °C | ||
TSCA | Yes | ||
HS 번호 | 2905 11 00 | ||
위험 등급 | 3 | ||
포장분류 | II | ||
유해 물질 데이터 | 67-56-1(Hazardous Substances Data) | ||
독성 | LD50 oral (rat) 5628 mg/kg LD50 skin (rabbit) 15,840 mg/kg LC50 inhal (rat) >145,000 ppm (1 h) PEL (OSHA) 200 ppm (260 mg/m3) TLV-TWA (ACGIH) 200 ppm (260 mg/m3)—skin STEL (ACGIH) 250 ppm (328 mg/m3) |
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IDLA | 6,000 ppm | ||
기존화학 물질 | KE-23193 | ||
유해화학물질 필터링 | 97-1-80 | ||
사고대비 물질 필터링 | 4 | ||
함량 및 규제정보 | 물질구분: 사고대비물질; 혼합물(제품)함량정보: 메틸알코올 및 이를 85% 이상 함유한 혼합물 |
메틸알콜 C화학적 특성, 용도, 생산
개요
Methyl alcohol, also known as methanol or wood alcohol, is a clear, colorless, flammable liquid that is the simplest alcohol.World production of methanol is approximately 8.5 billion gallons annually. Methanol is produced industrially, starting with the production of synthesis gas or syngas. Syngas used in the production of methyl alcohol is a mixture of carbon monoxide and hydrogen formed when natural gas reacts with steam or oxygen. Methyl alcohol is then synthesized from carbon monoxide and hydrogen.
Methyl alcohol is poisonous and is commonly used to denature ethyl alcohol. Methanol poisoning results from ingestion, inhalation of methanol vapors, or absorption through the skin. Methanol is transformed in the body to formaldehyde (H2CO) by the enzyme alcohol dehydrogenase.The formaldehyde is then metabolized to formic acid (HCOOH)by aldehyde dehydrogenase.
화학적 성질
Methanol is a clear, water-white liquid with a mild odor at ambient temperatures.The air odor threshold for methanol has been reported as 100 ppm . Others have reported that 2000 or 5900 ppm methanol is barely detectable .물리적 성질
Clear, colorless liquid with a characteristic alcoholic odor. Odor threshold concentrations ranged from 8.5 ppbv (Nagata and Takeuchi, 1990) to 100.0 ppmv (Leonardos et al., 1969). Experimentally determined detection and recognition odor threshold concentrations were 5.5 mg/m3 (4.2 ppmv) and 69 mg/m3 (53 ppmv), respectively (Hellman and Small, 1974).역사
It was first isolated in 1661 by the Irish chemist Robert Boyle (1627–1691) who prepared it by the destructive distillation of boxwood, giving it the name spirit of box, and the name wood alcohol is still used for methyl alcohol. Methyl alcohol is also called pyroxylic spirit; pyroxylic is a general term meaning distilled from wood and indicates that methyl alcohol is formed during pyrolysis of wood. The common name was derived in the mid-1800s. The name methyl denotes the single carbon alkane methane in which a hydrogen atom has been removed to give the methyl radical. The word alcohol is derived from Arabic al kuhul.용도
Methylalcohol, CH30H, also known as methanol or wood alcohol, is a colorless, toxic, flammable liquid with a boiling point of 64.6 °C(147 °F). The principal toxic effect is on the nervous system,particularly the retinae. Methyl alcoholis miscible in all proportions with water,ethyl alcohol, and ether. It burns with a light blue flame producing water and carbon dioxide. This vapor forms an explosive mixture(6.0 to 36.5% by volume) with air. Methyl alcohol is an important inexpensive raw material that is synthetically produced for the organic chemical industry. Nearly half of the methyl alcohol manufactured is used in the production of formaldehyde. Other uses of methyl alcohol are as an antifreeze and fuel for automobiles and as an intermediate in the production of synthetic protein.정의
ChEBI: Methanol is the primary alcohol that is the simplest aliphatic alcohol, comprising a methyl and an alcohol group. It has a role as an amphiprotic solvent, a fuel, a human metabolite, an Escherichia coli metabolite, a mouse metabolite and a Mycoplasma genitalium metabolite. It is an alkyl alcohol, a one-carbon compound, a volatile organic compound and a primary alcohol. It is a conjugate acid of a methoxide.생산 방법
Modern industrial-scale methanol production is exclusively based on synthesis from pressurized mixtures of hydrogen, carbon monoxide, and carbon dioxide gases in the presence of catalysts. Based on production volume, methanol has become one of the largest commodity chemicals produced in the world.화학 반응
Methyl alcohol is a versatile material, reacting (1) with sodium metal, forming sodium methylate, sodium methoxide CH3ONa plus hydrogen gas, (2) with phosphorus chloride, bromide, iodide, forming methyl chloride, bromide, iodide, respectively, (3) with H2SO4 concentrated, forming dimethyl ether (CH3)2O, (4) with organic acids, warmed in the presence of H2SO4, forming esters, e.g., methyl acetate CH3COOCH3, [CAS: 79-20-9], methyl salicylate C6H4(OH)·COOCH3, possessing characteristic odors, (5) with magnesium methyl iodide in anhydrous ether (Grignard’s solution), forming methane as in the case of primary alcohols, (6) with calcium chloride, forming a solid addition compound 4CH3OH·CaCl2, which is decomposed by H2O, (7) with oxygen, in the presence of heated smooth copper or silver forming formaldehyde. The density of pure methyl alcohol is 0.792 at 20 °C compared with H2O at 4 °C (the corresponding figure for ethyl alcohol is 0.789), and the percentage of methyl alcohol present in a methyl alcohol-water solution may be determined from the density of the sample.World Health Organization (WHO)
Methanol has been subjected to abuse by consumption as a substitute for ethanol. Its toxic metabolites cause irreversible blindness and severe metabolic acidosis, and are ultimately fatal. Methanol continues to be used as an industrial solvent.일반 설명
A colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may travel some distance to a source of ignition and flash back. Any accumulation of vapors in confined spaces, such as buildings or sewers, may explode if ignited. Used to make chemicals, to remove water from automotive and aviation fuels, as a solvent for paints and plastics, and as an ingredient in a wide variety of products.반응 프로필
Methanol reacts violently with acetyl bromide [Merck 11th ed. 1989]. Mixtures with concentrated sulfuric acid and concentrated hydrogen peroxide can cause explosions. Reacts with hypochlorous acid either in water solution or mixed water/carbon tetrachloride solution to give methyl hypochlorite, which decomposes in the cold and may explode on exposure to sunlight or heat. Gives the same product with chlorine. Can react explosively with isocyanates under basic conditions. The presence of an inert solvent mitigates this reaction [Wischmeyer 1969]. A violent exothermic reaction occurred between methyl alcohol and bromine in a mixing cylinder [MCA Case History 1863. 1972]. A flask of anhydrous lead perchlorate dissolved in Methanol exploded when Methanol was disturbed [J. Am. Chem. Soc. 52:2391. 1930]. P4O6 reacts violently with Methanol. (Thorpe, T. E. et al., J. Chem. Soc., 1890, 57, 569-573). Ethanol or Methanol can ignite on contact with a platinum-black catalyst. (Urben 1794).위험도
Flammable, dangerous fire risk. Explosive limits in air 6–36.5% by volume. Toxic by ingestion (causes blindness). Headache, eye damage, dizziness, and nausea.건강위험
The acute toxicity of methanol by ingestion, inhalation, and skin contact is low. Ingestion of methanol or inhalation of high concentrations can produce headache, drowsiness, blurred vision, nausea, vomiting, blindness, and death. In humans, 60 to 250 mL is reported to be a lethal dose. Prolonged or repeated skin contact can cause irritation and inflammation; methanol can be absorbed through the skin in toxic amounts. Contact of methanol with the eyes can cause irritation and burns. Methanol is not considered to have adequate warning properties.Methanol has not been found to be carcinogenic in humans. Information available is insufficient to characterize the reproductive hazard presented by methanol. In animal tests, the compound produced developmental effects only at levels that were maternally toxic; hence, it is not considered to be a highly significant hazard to the fetus. Tests in bacterial or mammalian cell cultures demonstrate no mutagenic activity
화재위험
Behavior in Fire: Containers may explode.인화성 및 폭발성
Methanol is a flammable liquid (NFPA rating = 3) that burns with an invisible flame in daylight; its vapor can travel a considerable distance to an ignition source and "flash back." Methanol-water mixtures will burn unless very dilute. Carbon dioxide or dry chemical extinguishers should be used for methanol fires.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.저장
Methanol should be used only in areas free of ignition sources, and quantities greater than 1 liter should be stored in tightly sealed metal containers in areas separate from oxidizers.운송 방법
UN1230 Methanol, Hazard Class: 3; Labels: 3-Flammable liquid, 6.1-Poisonous material. (International)비 호환성
Methanol reacts violently with strong oxidizers, causing a fire and explosion hazard.폐기물 처리
Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. Incineration메틸알콜 준비 용품 및 원자재
원자재
HEAVY CUT RESIDUE OIL
Residuum
L-(+)-젖 산
일산화탄소(가스)
메틸 T-뷰틸에테르
산소, 냉각된 액체
이산화탄소
METALLURGICAL COKE
수소
수산화나트륨
유산
디젤 연료 1번
메탄
준비 용품
클로로피나콜린
3'-DIMETHYLAMINOACETOPHENONE
칼륨 메톡사이드
메톡시 트리글리콜
트리메톡시비닐실란
METHYL TRICOSANOATE
Ethyl 3-(benzylamino)propanoate
다이메톡시다이페닐 실레인
3- 글리시 독시 프로필 트리 메 톡시 실란
4-Bromobenzyl alcohol
2-Amino-4-methoxypyridine
1,5-NAPHTHALENEDISULFONIC ACID DISODIUM SALT, DIHYDRATE, 98
4-MORPHOLINECARBOXAMIDINE
FEMA 2062
2-티오펜카복실산 하이드라자이드
이소부틸-3-메독시피라진
H-DL-PRO-OME HCL
3,5-Dimethoxybenzyl alcohol
4-(METHOXYCARBONYL)NICOTINIC ACID
MONO-METHYL GLUTARATE
METHYL 3-AMINOBENZOATE
Methyl 3,4-dimethylbenzoate
1-(1,3-DIHYDRO-1-OXOISOBENZOFURAN-3-YL)UREA
(1H-IMIDAZOL-2-YL)-METHANOL
2-OXO-6-PHENYL-4-(TRIFLUOROMETHYL)-1,2-DIHYDRO-3-PYRIDINECARBONITRILE
5-Bromo-4,6-dihydroxypyrimidine
NICOTINIC ACID HYDRAZIDE
3-(메타크릴옥시프로필)트리메톡시실란
메틸 스테아레이트
TETRAHYDRO-3-FUROIC ACID
2-Quinolinemethanamine
디프로필렌 글리콜 메틸 에테르
5-BROMO-2-CHLORO-4-METHOXYPYRIMIDINE
4-Hydroxy-5-fluorpyrimidine
5-METHYL-2-HEXANOL
N,N'-BISBENZYLIDENEBENZIDINE
Methyl 4-aminobutyrate hydrochloride
(3-클로로프로필)트리메톡시실란
methylated albumin
3-(METHOXYCARBONYL)PYRIDINE-2-CARBOXYLIC ACID
메틸알콜 공급 업체
글로벌( 758)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hebei Duling International Trade Co. LTD | +86-0311-87836622; +8613126117136 |
sales06@hbduling.cn | China | 15815 | 58 |
HENAN LIHAO CHEM PLANT LIMITED | +86-0371-88812595 +8618703631882 |
info@lihaochemical.com | China | 35476 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21975 | 55 |
Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 |
jack.li@time-chemicals.com | China | 1807 | 55 |
Shanxi Naipu Import and Export Co.,Ltd | +86-13734021967 +8613734021967 |
kaia@neputrading.com | China | 1011 | 58 |
career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29922 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28184 | 58 |
Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 |
alice@crovellbio.com | China | 8877 | 58 |
Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 |
sales@amoychem.com | China | 6387 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22971 | 58 |