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Toxicity data
Risk phrases
Safety phrases
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for it. General
Synonyms: N-methyl-2-pyrrolidone, 1-methyl-2-pyrrolidinone, NMP
Molecular formula: C5H9NO
CAS No: 872-50-4
EINECS No: 212-828-1
EC Index No: 606-021-00-7
RTECS No: UY5790000
NFPA Code: 2-1-0
Physical data
Appearance: colourless or light yellow liquid with an amine odour
Melting point: -23 C
Boiling point: 202 C
Vapour density:
Vapour pressure:
Density (g cm-3): 1.026
Flash point: 95 C
Explosion limits: 1.3 - 9.5 %
Autoignition temperature:
Water solubility: > 10% w/w at 20 C
Stability
Stable, but decomposes upon exposure to light. Combustible.
Incompatible with strong oxidizing
agents, strong acids, reducing agents, bases.
Toxicology
Skin, eye and respiratory irritant. May cause harm to the unborn child.
Typical OES-LTEL 25 ppm.
(The meaning of any abbreviations which appear in this section is given
here.)
ORL-RAT LD50 3914 mg kg-1
ORL-MUS LD50 7725 mg kg-1
IPR-RAT LD50 2472 mg kg-1
IVN-RAT LD50 2266 mg kg-1
SKN-RBT LD50 8000 mg kg-1
(The meaning of any risk phrases which appear in this section is given
here.)
R36 R37 R38 R61.
Transport information
(The meaning of any UN hazard codes which appear in this section
is given
here.)
Non-hazardous for air, sea and road freight.
Personal protection
Safety glasses, adequate ventilation. [Suitable protective
materials for gloves: butyl rubber, polyethylene.]
(The meaning of any safety phrases which appear in this section
is given here.)
S41 S64.