ICSC 1334 - BUTYRIC ACID

BUTYRIC ACID	ICSC: 1334 (November 1998)
n-Butanoic acid Ethylacetic acid 1-Propanecarboxylic acid Butanic acid

CAS #: 107-92-6

UN #: 2820

EC Number: 203-532-3

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Above 72°C explosive vapour/air mixtures may be formed.	NO open flames. Above 72°C use a closed system and ventilation.	Use water spray, powder, alcohol-resistant foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	Pain. Redness. Blisters. Skin burns.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
Eyes	Pain. Redness. Severe deep burns. Loss of vision.	Wear face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Burning sensation. Abdominal pain. Shock or collapse.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Cautiously neutralize remainder with soda lime. Then wash away with plenty of water.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Separated from strong oxidants, strong bases and food and feedstuffs.
PACKAGING
Do not transport with food and feedstuffs.

BUTYRIC ACID

ICSC: 1334

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers The substance is a medium strong acid. Reacts with bases and strong oxidants. Attacks many metals.	Formula: C₄H₈O₂ / CH₃CH₂CH₂COOH Molecular mass: 88.1 Boiling point: 164°C Melting point: -7.9°C Relative density (water = 1): 0.96 Solubility in water: miscible Vapour pressure, Pa at 20°C: 57 Relative vapour density (air = 1): 3 Flash point: 72°C c.c. Auto-ignition temperature: 452°C Explosive limits, vol% in air: 2-10 Octanol/water partition coefficient as log Pow: 0.79

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
The substance is a medium strong acid. Reacts with bases and strong oxidants. Attacks many metals.

Formula: C₄H₈O₂ / CH₃CH₂CH₂COOH
Molecular mass: 88.1
Boiling point: 164°C
Melting point: -7.9°C
Relative density (water = 1): 0.96
Solubility in water: miscible
Vapour pressure, Pa at 20°C: 57
Relative vapour density (air = 1): 3
Flash point: 72°C c.c.
Auto-ignition temperature: 452°C
Explosive limits, vol% in air: 2-10
Octanol/water partition coefficient as log Pow: 0.79

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour. Effects of short-term exposure The substance is corrosive to the eyes, skin and respiratory tract.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour.

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract.

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

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: C; R: 34; S: (1/2)-26-36-45

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    See Also:
       Toxicological Abbreviations
       BUTYRIC ACID (JECFA Evaluation)