Safety data for piperidine
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Toxicity data
Risk phrases
Safety phrases
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This information was last updated on December 20, 2006.
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for it. General
Synonyms: hexahydropyridine, pentamethyleneimine, azacyclohexane,
cyclopentimine, cypentil, hexazane,
Molecular formula: C5H11N
CAS No: 110-89-4
EINECS No: 203-813-0
Annex I Index No: 613-027-00-3
Physical data
Appearance: colourless liquid with the odour of pepper
Melting point: -11 C
Boiling point: 106 C
Vapour density: 3 (air = 1)
Vapour pressure: 40 mm Hg at 20 C
Density (g cm-3): 0.86
Flash point: 16 C (closed cup)
Explosion limits:
Autoignition temperature:
Water solubility: soluble
Stability
Stable. Highly flammable. Incompatible with strong oxidizing agents,
strong acids, organic acids, water.
Vapours may flow along surfaces to a distant source of ignition.
Toxicology
Poison. May be fatal if inhaled or swallowed.
Severe irritant. Skin contact may cause severe irritation or burns.
Contact with the eyes may lead to permanent damage.
(The meaning of any abbreviations which appear in this section
is given
here.)
ORL-RAT LD50 400 mg kg-1
IPR-MUS LD50 50 mg kg-1
SKN-RBT LD50 320 mg kg-1
ORL-MUS LD50 30 mg kg-1
ORL-RBT LD50 145 mg kg-1
(The meaning of any risk phrases which appear in this section is
given here.)
R11 R23 R24 R34. (Note: The risk phrases here are those given by Annex I.
Annex I does not specify R22 or R25, but this material is clearly
harmful if swallowed so should be treated as though R22 were included.]
Transport information
(The meaning of any UN hazard codes which appear in this section
is given
here.)
UN No 2401. Major hazard class 8. Subsidiary risk 3. Packing group I.
Personal protection
Safety glasses, gloves, good ventilation. Remove sources of
ignition from the working area.
(The meaning of any safety phrases which appear in this section
is given here.)
S16 S26 S27 S45.