ACETAL (ICSC)

ACETAL	ICSC: 1070

Date of Peer Review: November 2003

1,1-Diethoxyethane
Ethylidene diethyl ether
Diethylacetal
Acetaldehyde diethyl acetal

CAS #

105-57-7

C₆H₁₄O₂

RTECS #

AB2800000

Molecular mass: 118.20

UN #

1088

EC #

605-015-00-1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Highly flammable.	NO open flames, NO sparks, and NO smoking.	Powder, AFFF, foam, 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. Use non-sparking handtools.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE
Inhalation	Cough. Dizziness. Drowsiness. Headache. Nausea. Sore throat.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Diarrhoea. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

PACKAGING & LABELLING

Remove all ignition sources. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. (Extra personal protection: filter respirator for organic gases and vapours.)

Airtight.
EU Classification
Symbol: F, Xi
R: 11-36/38
S: (2-)-9-16-33
UN Classification
UN Hazard Class: 3
UN Pack Group: II

EMERGENCY RESPONSE

STORAGE

Transport Emergency Card: TEC (R)-30S1088
NFPA Code: H0; F3; R0;

Fireproof. Separated from strong oxidants. Cool. Keep in the dark. Well closed. Store only if stabilized.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities © IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK

ACETAL

ICSC: 1070

IMPORTANT DATA

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

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

CHEMICAL DANGERS:
The substance can form explosive peroxides under the influence of light and air. The substance may polymerize on standing. Reacts violently with oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract. Exposure may result in lowering of consciousness.

PHYSICAL PROPERTIES

Boiling point: 103°C
Melting point: -100°C
Relative density (water = 1): 0.83
Solubility in water, g/100 ml: 5.0
Vapour pressure, kPa at 20°C: 2.7
Relative vapour density (air = 1): 4.1

Relative density of the vapour/air-mixture at 20°C (air = 1): 1.08
Flash point: -21°C c.c.
Auto-ignition temperature: 230°C
Explosive limits, vol% in air: 1.6-10.4
Octanol/water partition coefficient as log Pow: 0.84

ENVIRONMENTAL DATA

NOTES

An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Check for peroxides prior to distillation; eliminate if found.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor 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

    See Also:
       Toxicological Abbreviations
       ACETAL (JECFA Evaluation)