International Chemical Safety Cards

DIKETENE ICSC: 1280
DIKETENE
But-3-en-3-olide
3-Buteno-beta-lactone
4-Methylene-2-oxetanone
Acetyl ketene
C4H4O2
Molecular mass: 84.1
CAS # 674-82-8
RTECS # RQ8225000
ICSC # 1280
UN # 2521
EC # 606-017-00-5
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Carbon dioxide. Dry sand. NO hydrous agents. NO water. NO powder (Purple K).
EXPLOSION Above 33░C explosive vapour/air mixtures may be formed. Risk of fire and explosion on contact with acid(s), base(s) and water.
Above 33░C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water.
EXPOSURE
PREVENT GENERATION OF MISTS!

  • INHALATION
    		• Cough. Sore throat. Shortness of breath.
    		Ventilation, local exhaust, or breathing protection.
    		Fresh air, rest. Half-upright position. Refer for medical attention.
  • SKIN
    		• Redness. Pain.
    		Protective gloves. Protective clothing.
    		Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
  • EYES
    		• Redness. Pain. Blurred vision.
    		Safety goggles, or eye protection in combination with breathing protection.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• Abdominal pain.
    		Do not eat, drink, or smoke during work.
    		Rinse mouth. Do NOT induce vomiting. 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. NEVER direct water jet on liquid (extra personal protection: filter respirator for organic gases and vapours).
    		Fireproof. Separated from acids, bases and food and feedstuffs. Cooled. Dry. Store only if stabilized.
    		Do not transport with food and feedstuffs. Transport only if stabilized.
    Xn symbol
    R: 10-20
    S: (2-)3
    Note: D
    UN Hazard Class: 6.1
    UN Subsidiary Risks: 3
    UN Packing Group: I
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 1280 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    DIKETENE ICSC: 1280

    I

    M

    P

    O

    R

    T

    A

    N

    T



    D

    A

    T

    A
    PHYSICAL STATE; APPEARANCE:
     COLOURLESS LIQUID , WITH PUNGENT ODOUR.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     The substance will polymerize slowly on standing, and violently due to warming or under the influence of acid(s) and base(s) with fire or explosion hazard. Reacts violently with water.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV not established.
    MAK not established.


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation of its aerosol 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 severely the eyes, the skin and the respiratory tract. Inhalation of vapour of this substance may cause lung oedema (see Notes).

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    PHYSICAL
    PROPERTIES
    Boiling point: 127░C
    Melting point: -7░C
    Relative density (water = 1): 1.09
    Solubility in water: reaction
    Vapour pressure, kPa at 20░C: 1
    		 Relative vapour density (air = 1): 2.9
    Relative density of the vapour/air-mixture at 20░C (air = 1): 1.02
    Flash point: 33░C
    Auto-ignition temperature: 275░C
    Explosive limits, vol% in air: 2-11.7
    ENVIRONMENTAL
    DATA
         		This substance may be hazardous to the environment; special attention should be given to fish.
    N O T E S
    Reacts violently with fire extinguishing agents such as water. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Vinylaceto-beta-lactone is also used as a synonym.
    Transport Emergency Card: TEC (R)-902
    NFPA Code: H3; F2; R2
    ADDITIONAL INFORMATION


    ICSC: 1280 DIKETENE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.