DIKETENE 1280
March 1998
But-3-en-3-olide
CAS No: 674-82-8
3-Buteno-beta-lactone
RTECS No: RQ8225000
4-Methylene-2-oxetanone
UN No: 2521
Acetyl ketene
EC No: 606-017-00-5
C4H4O2
Molecular mass: 84.1
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
Flammable. NO open flames, NO sparks, and Carbon dioxide. Dry sand. NO
FIRE
NO smoking. hydrous agents. NO water. NO
powder (Purple K).
Above 33/C explosive vapour/air Above 33/C use a closed system, In case of fire: cool drums, etc., by
EXPLOSION
mixtures may be formed. Risk of ventilation, and explosion-proof spraying with water but avoid
fire and explosion on contact with electrical equipment. contact of the substance with water.
acid(s), base(s) and water.
EXPOSURE PREVENT GENERATION OF
MISTS!
Cough. Sore throat. Shortness of Ventilation, local exhaust, or Fresh air, rest. Half-upright position.
Inhalation
breath. breathing protection. Refer for medical attention.
Redness. Pain. Protective gloves. Protective Remove contaminated clothes.
Skin
clothing. Rinse skin with plenty of water or
shower. Refer for medical attention.
Redness. Pain. Blurred vision. Safety goggles or eye protection in First rinse with plenty of water for
Eyes
combination with breathing several minutes (remove contact
protection. lenses if easily possible), then take
to a doctor.
Abdominal pain. Do not eat, drink, or smoke during Rinse mouth. Do NOT induce
Ingestion
work. vomiting. Refer for medical
attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable Xn Symbol Do not transport with food and
containers as far as possible. Absorb remaining R: 10-20 feedstuffs. Transport only if
liquid in sand or inert absorbent and remove to safe S: (2-)3 stabilized.
place. NEVER direct water jet on liquid. Personal Note: D
protection: filter respirator for organic gases and UN Hazard Class: 6.1
vapours. UN Subsidiary Risks: 3
UN Pack Group: I
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61S2521 or Fireproof. Separated from acids, bases food and feedstuffs. Cooled. Dry.
61GTF1-I Store only if stabilized.
NFPA Code: H3; F2; R2
IPCS Prepared in the context of cooperation between the International
Programme on Chemical Safety and the European Commission 漏
International IPCS 2005
Programme on
Chemical Safety SEE IMPORTANT INFORMATION ON THE BACK.
1280 DIKETENE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
COLOURLESS LIQUID, WITH PUNGENT ODOUR. The substance can be absorbed into the body by inhalation of
its aerosol and by ingestion.
Chemical dangers
Inhalation risk
The substance will polymerize slowly on standing, and violently
due to warming or under the influence of acid(s) and base(s) A harmful contamination of the air can be reached rather quickly
with fire or explosion hazard. Reacts violently with water. on evaporation of this substance at 20/C.
Occupational exposure limits Effects of short-term exposure
TLV not established. The substance is severely irritating to the eyes, the skin and the
MAK: IIb (not established but data is available); (DFG 2004). respiratory tract. Inhalation of vapour of this substance may
cause lung oedema (see Notes).
PHYSICAL PROPERTIES
Boiling point: 127/C Relative vapour density (air = 1): 2.9
Melting point: -7/C Relative density of the vapour/air-mixture at 20/C (air = 1): 1.02
Relative density (water = 1): 1.09 Flash point: 33/C
Solubility in water: reaction Auto-ignition temperature: 275/C
Vapour pressure, kPa at 20/C: 1 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.
NOTES
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 inhalation therapy 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.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE
漏IPCS 2005
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