METHYL MERCAPTAN
METHYL MERCAPTAN
- CAS:
- 74-93-1
- MF:
- CH4S
- MW:
- 48.11
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Properties
- Melting point:
- −123 °C(lit.)
- Boiling point:
- 6 °C(lit.)
- Density
- 0.8665
- vapor density
- 1.66 (vs air)
- vapor pressure
- 1536 mm Hg ( 20 °C)
- refractive index
- 1.4020 (estimate)
- Flash point:
- <71℃
- solubility
- Soluble in alcohol, ether (Weast, 1986), and petroleum naphtha (Hawley, 1981)
- pka
- 10.3(at 25℃)
- form
- liquid
- Odor
- at 0.01 % in propylene glycol. decomposing cabbage garlic
- Odor Type
- sulfurous
- Odor Threshold
- 0.00007ppm
- explosive limit
- 21.8%
- Water Solubility
- 23.30 g/L at 20 °C (quoted, Windholz et al., 1983)
0.330 mol/L at 25 °C (Hine and Weimar, 1965)
- JECFA Number
- 508
- Merck
- 13,5983
- BRN
- 1696840
- Henry's Law Constant
- 3.03 (Hine and Weimar, 1965)
- Exposure limits
- TLV-TWA 0.5 ppm (~1.0 mg/m3 ) (ACGIH and MSHA); ceiling 10 ppm (OSHA); IDLH 400 ppm (NIOSH); the revised IDLH is 150 ppm in analogy to H2S.
- Stability:
- Stable. Highly flammable - note low flash point. Reacts vigorously or explosively with a wide variety of materials - consult a full MSDS data sheet before using. Incompatible with strong oxidizing agents, alkali and alkaline earth metals, epoxides, hydrazines, ketones, lead, mercury (II) oxide, azo- and diazo- compounds, copp
- LogP
- 0.72
Safety Information
- Symbol(GHS)
GHS02,GHS04,GHS06,GHS09
- Signal word
- Danger
- Hazard statements
- H220-H280-H331-H410
- Precautionary statements
- P210-P261-P273-P304+P340+P311-P403+P233-P410+P403
- Hazard Codes
- F+,T,N
- Risk Statements
- 12-23-50/53
- Safety Statements
- 16-25-60-61
- RIDADR
- UN 2037 2.3
- OEL
- Ceiling: 0.5 ppm (1 mg/m3) [15-minute]
- WGK Germany
- 3
- RTECS
- PB4375000
- F
- 13-27
- HazardClass
- 2.3
- Toxicity
- LC50 (inhalation) for mice 6,530 μg/m3/2-h, rats 675 ppm (quoted, RTECS, 1985).
- IDLA
- 150 ppm
Use
Combustion produces irritating sulfur dioxide. Flash back along vapor track may occur. Very dangerous when exposed to heat, flame, or oxidizers. On decomposition METHYL MERCAPTAN emits highly toxic fumes of sulfur oxides. METHYL MERCAPTAN will react with water, steam or acids to produce toxic and flammable vapors; and can react vigorously with oxidizing materials. Irritating sulfur dioxide is produced upon combustion. When heated to decomposition, METHYL MERCAPTAN emits highly toxic fumes and flammable vapors. Incompatible with mercuric oxide and oxidizing materials. Avoid direct sunlight, and areas of high fire hazards. Hazardous polymerization may not occur.
1 India supplier list of "METHYL MERCAPTAN"
- Product Name:Methyl mercaptan
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: INDIA
- Product Name:Methanethiol
- Products Intro:Brand:sigma aldrich | Product Number:742805 | Purity:≥98.0%
- Company Type: Trader
- Country/Region: INDIA
$100.00/ 25KG
- Product Name:METHYL MERCAPTAN
- Products Intro:Purity: 98% | Package: 25KG;100USD
- Company Type: Reagent
- Country/Region: CHINA