Monomethylaniline CAS#100-61-8
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Monomethylaniline CAS#100-61-8

Monomethylaniline, also known as N-methylaniline , is an organic compound. It is a colorless to yellow liquid with a characteristic amine odor. Monomethylaniline is used as an intermediate in the production of dyes, pesticides, and other organic compounds. It is also utilized as a solvent and acid acceptor in various chemical processes. Due to its air sensitivity, it may discolor upon exposure to air and is incompatible with strong oxidizing agents. It is essential to handle Monomethylaniline with care, as it has a moderate vapor pressure and is considered toxic .

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Monomethylaniline CAS#100-61-8

N-Methylaniline Chemical Properties
Melting point -57 °C (lit.)
Boiling point 196 °C (lit.)
density 0.989 g/mL at 25 °C (lit.)
vapor pressure 0.5 hPa (20 °C)
refractive index n20/D 1.571(lit.)
Fp 174 °F
storage temp. Store below +30°C.
solubility water: slightly soluble30g/L
pka 4.84(at 25℃)
form Liquid
color Clear yellow to brown
PH 7.6 (1g/l, H2O, 20℃)
Odor Moderate aniline-type.
Water Solubility 30 g/L
Sensitive Air Sensitive
Merck 14,6019
BRN 741982
Henry’s Law Constant (x 10-5 atm?m3/mol): 1.19 at 25 °C (approximate – calculated from water solubility and vapor pressure)
Exposure limits NIOSH REL: TWA 0.5 ppm (2 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 2 ppm (9 mg/m3); ACGIH TLV: TWA 0.5 ppm (adopted).
Dielectric constant 6.0（22℃）
Stability: Incompatible with strong oxidizing agents. Discolours upon exposure to air.
InChIKey AFBPFSWMIHJQDM-UHFFFAOYSA-N
LogP 1.66 at 20℃
CAS DataBase Reference 100-61-8(CAS DataBase Reference)
NIST Chemistry Reference Aniline, N-methyl-(100-61-8)
EPA Substance Registry System N-Methylaniline (100-61-8)
Safety Information
Hazard Codes T,N
Risk Statements 23/24/25-33-50/53
Safety Statements 28-36/37-45-60-61-28A
RIDADR UN 2294 6.1/PG 3
OEB B
OEL TWA: 0.5 ppm (2 mg/m3) [skin]
WGK Germany 3
RTECS BY4550000
F 8
Autoignition Temperature 500 °C
TSCA Yes
HazardClass 6.1
PackingGroup III
HS Code 29214200
Hazardous Substances Data 100-61-8(Hazardous Substances Data)
Toxicity LD in rabbits (g/kg): 0.28 orally; in rabbits, cats (mg/kg): 24, 24 i.v. (Treon)
IDLA 100 ppm

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