ICSC 1070 - ACETAL

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

ACETAL

ICSC: 1070
_{November 2003}

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

CAS No: 105-57-7
RTECS No: AB2800000
UN No: 1088
EC No: 605-015-00-1

C₆H₁₄O₂
Molecular mass: 118.20

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	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.)	F Symbol Xi Symbol R: 11-36/38 S: (2-)9-16-33 UN Hazard Class: 3 UN Pack Group: II	Airtight.

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.

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

ENVIRONMENTAL DATA

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

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.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2003

LEGAL NOTICE

Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

Updated by AS. Approved by EC. Last update: 23.01.2004