METHYL MERCAPTAN

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)

FEMA :

2716 | METHYL MERCAPTAN

Flash point::

<71℃

solubility :

Soluble in alcohol, ether (Weast, 1986), and petroleum naphtha (Hawley, 1981)

form :

liquid

pka:

10.3(at 25℃)

Odor:

at 0.01 % in propylene glycol. decomposing cabbage garlic

explosive limit:

21.8%

Odor Threshold:

0.00007ppm

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)

Merck :

13,5983

JECFA Number:

508

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

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