International Chemical Safety Cards

PYRIDINE ICSC: 0323

PYRIDINE
Azine
Azabenzene
C5H5N
Molecular mass: 79.1
CAS # 110-86-1
RTECS # UR8400000
ICSC # 0323
UN # 1282
EC # 613-002-00-7
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Powder, alcohol-resistant foam, water in large amounts, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


  • INHALATION
    		• Cough. Dizziness. Headache. Nausea. Shortness of breath. Unconsciousness.
    		Ventilation, local exhaust, or breathing protection.
    		Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
    		• MAY BE ABSORBED! Redness (further see Inhalation).
    		Protective clothing.
    		Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
  • EYES
    		• Redness. Pain.

    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• Abdominal pain. Diarrhoea. Vomiting. Weakness (further see Inhalation).

    		Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer (extra personal protection: self-contained breathing apparatus).
    		Fireproof. Separated from strong oxidants, strong acids, food and feedstuffs. Cool. Dry. Well closed.
    		Do not transport with food and feedstuffs.
    F symbol
    Xn symbol
    R: 11-20/21/22
    S: 26-28
    UN Haz Class: 3
    UN Subsidiary Risks: 6.1
    UN Packing Group: II
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0323 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    PYRIDINE ICSC: 0323

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS HYGROSCOPIC LIQUID , WITH CHARACTERISTIC ODOUR.

    PHYSICAL DANGERS:
     The vapour is heavier than air and may travel along the ground; distant ignition possible.

    CHEMICAL DANGERS:
     On combustion, forms toxic fumes (amines). The substance decomposes on heating or on burning producing toxic fumes (nitrogen oxides and hydrogen cyanide, ICSC # 0492). Reacts violently with strong oxidants and strong acids.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV (as TWA): 5 ppm; 16 mg/m3 (ACGIH 199?-199?).
    MAK: 5 ppm; 15 mg/m3; (1992).
    OSHA PEL: TWA 5 ppm (15 mg/m3)
    NIOSH REL: TWA 5 ppm (15 mg/m3)
    NIOSH IDLH: 1000 ppm


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

    INHALATION RISK:
     A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the central nervous system.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     The substance may have effects on the central nervous system, liver and kidneys.
    PHYSICAL
    PROPERTIES
    Boiling point: 115°C
    Melting point: -42°C
    Relative density (water = 1): 0.98
    Solubility in water: miscible
    Vapour pressure, kPa at 20°C: 2.0
    Relative vapour density (air = 1): 2.73
    		 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.03
    Flash point: 17°C (c.c.)
    Auto-ignition temperature: 480°C
    Explosive limits, vol% in air: 1.7-10.6
    Octanol/water partition coefficient as log Pow: 0.65
    ENVIRONMENTAL
    DATA
         		This substance may be hazardous to the environment; special attention should be given to water organisms.
    NOTES
    Depending on the degree of exposure, periodic medical examination is indicated. The odour warning when the exposure limit value is exceeded is insufficient. Rinse contaminated clothes (fire hazard) with plenty of water.
    Transport Emergency Card: TEC (R)-98
    NFPA Code: H 2; F 3; R 0;
    ADDITIONAL INFORMATION


    ICSC: 0323 PYRIDINE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and IDLH values.