International Chemical Safety Cards

ISOBUTANE ICSC: 0901

ISOBUTANE
2-Methylpropane
(cylinder)
C4H10
Molecular mass: 58.12
CAS # 75-28-5
RTECS # TZ4300000
ICSC # 0901
UN # 1969
EC # 601-004-00-0
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Extremely flammable. Highly flammable.
NO open flames, NO sparks, and NO smoking.
water spray,
EXPLOSION Gas/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting, Use reduced-sparking handtools.
In case of fire: keep cylinder cool by spraying with water. Combat fire out of sheltered position.
EXPOSURE


  • INHALATION
    		• Burning sensation.
    		Ventilation.
    		Fresh air, rest, artificial respiration if indicated, and refer for medical attention.
  • SKIN
    		• Redness, serious frostbite.
    		Protective gloves.
    		Rinse skin with plenty of water or shower, and refer for medical attention.
  • EYES
    		• Redness.
    		Safety goggles, face shield.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• Burning sensation.
    		Do not eat, drink, or smoke during work.
    		Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Evacuate danger area, consult an expert, do NOT wash away into sewer, (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    		Fireproof, separated from strong oxidants, tightly closed, ventilation along the floor.

    F symbol
    R: 13
    S: 9-16-33
    UN Haz Class: 2
    UN Subsidiary Risks: 3
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0901 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1990 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    ISOBUTANE ICSC: 0901

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS GAS

    PHYSICAL DANGERS:
     The gas is heavier than air and may travel along the ground; distant ignition possible. The gas mixes well with air, explosive mixtures are easily formed.

    CHEMICAL DANGERS:
     Upon heating, toxic fumes are formed. Reacts with strong oxidants, acetylene, halogens, and nitrous oxides.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     MAK: 1000 ppm; 2350 mg/m3 (STEL); IV (MAK 1991)
    OSHA PEL: none
    NIOSH REL: TWA 800 ppm (1900 mg/m3)
    NIOSH IDLH: No data


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation.

    INHALATION RISK:
     A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The substance irritates . The liquid may cause frostbite. Exposure could cause lowering of consciousness.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     Repeated or prolonged contact with skin may cause dermatitis.
    PHYSICAL
    PROPERTIES
    Boiling point at 101,3kPa: -0.5°C
    Melting point: 138.3°C
    Relative density (water = 1): gas: 2.0470; liqu.: 0.5510
    Solubility in water, g/100 ml at 20°C: 0.006
    Vapour pressure, kPa at 20°C: 304
    		 Relative vapour density (air = 1): 2.01
    Flash point: -60°C
    Auto-ignition temperature: 460°C
    Explosive limits, vol% in air: 1.8-8.5
    ENVIRONMENTAL
    DATA
         		Environmental toxicity:
    NOTES
    The apparent melting point caused by loss of crystal water is given. Depending on the degree of exposure, periodic medical examination is indicated.
    NFPA Code: H1; F4; R0;
    ADDITIONAL INFORMATION


    ICSC: 0901 ISOBUTANE
    © IPCS, CEC, 1990
    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.