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1-Methylimidazole Structure

1-Methylimidazole

Chemical Properties

Melting point −60 °C(lit.)
Boiling point 198 °C(lit.)
Density  1.03 g/mL at 25 °C(lit.)
vapor pressure  0.4 mm Hg ( 20 °C)
refractive index  n20/D 1.495(lit.)
Flash point 198 °F
storage temp.  Store below +30°C.
solubility  Chloroform (Slightly), Methanol (Slightly)
form  Liquid
pka 6.95(at 25℃)
Specific Gravity 1.031
color  Clear colorless to yellow
PH 9.5-10.5 (50g/l, H2O, 20℃)
PH Range 9.5 - 11.5 at 100 g/l at 20 °C
explosive limit 2.7-15.7%(V)
Water Solubility  Miscible with water.
Sensitive  Hygroscopic
BRN  105197
Stability Stable, but moisture sensitive. Incompatible with acids, acid anhydrides, strong oxidizing agents, moisture, carbon dioxide, acid chlorides.
InChIKey MCTWTZJPVLRJOU-UHFFFAOYSA-N
LogP -0.19 at 25℃
CAS DataBase Reference 616-47-7(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII P4617QS63Y
NIST Chemistry Reference 1H-Imidazole, 1-methyl-(616-47-7)
EPA Substance Registry System 1H-Imidazole, 1-methyl- (616-47-7)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H302-H311-H314
Precautionary statements P270-P280-P301+P312-P301+P330+P331-P303+P361+P353-P305+P351+P338
Hazard Codes  C,Xn,F,T
Risk Statements  21/22-34-19-11-20/21/22-52/53-24-22-40-37-21
Safety Statements  26-36-45-1/2-36/37/39-16-33-29-61
RIDADR  UN 3267 8/PG 2
WGK Germany  1
RTECS  NI7000000
3-10
Autoignition Temperature 977 °F
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29332990
Toxicity LD50 orally in Rabbit: 1144 mg/kg LD50 dermal Rabbit > 400 - < 640 mg/kg
NFPA 704:
2
3 1

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