ICSC 1593 - n-BUTYL CHLOROFORMATE

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n-BUTYL CHLOROFORMATE	ICSC: 1593 (October 2005)
Butyl chlorocarbonate Butyl chloroformate Chloroformic acid butyl ester Carbonochloridic acid, butyl ester

CAS #: 592-34-7

UN #: 2743

EC Number: 209-750-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Flammable. Gives off irritating or toxic fumes (or gases) in a fire. Above 30°C explosive vapour/air mixtures may be formed.	NO open flames, NO sparks and NO smoking. Above 30°C use a closed system, ventilation and explosion-proof electrical equipment.	NO water. Use dry powder, carbon dioxide, alcohol-resistant foam. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.

STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Burning sensation. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain. Skin burns.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
Eyes	Redness. Pain. Severe deep burns.	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	Abdominal pain. Burning sensation. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable dry plastic containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 6.1; UN Subsidiary Risks: 3 and 8; UN Pack Group: II
STORAGE
Fireproof. Dry. Well closed. Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs. Unbreakable packaging. Put breakable packaging into closed unbreakable container.

n-BUTYL CHLOROFORMATE

ICSC: 1593

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH PUNGENT ODOUR. Physical dangers Chemical dangers Decomposes on burning. This produces toxic and corrosive fumes. Reacts with water and moisture. This produces hydrogen chloride.	Formula: C₅H₉ClO₂ / CH₃(CH₂)₃OCOCl Molecular mass: 136.6 Boiling point: 138-145°C Melting point: <-70°C Density: 1.06 g/cm³ Solubility in water: reaction Vapour pressure, kPa at 20°C: 0.72 Relative vapour density (air = 1): 4.72 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02 Flash point: 30°C c.c. Auto-ignition temperature: 285°C Octanol/water partition coefficient as log Pow: 1.61 (calculated)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR.

Physical dangers

Chemical dangers
Decomposes on burning. This produces toxic and corrosive fumes. Reacts with water and moisture. This produces hydrogen chloride.

Formula: C₅H₉ClO₂ / CH₃(CH₂)₃OCOCl
Molecular mass: 136.6
Boiling point: 138-145°C
Melting point: <-70°C
Density: 1.06 g/cm³
Solubility in water: reaction
Vapour pressure, kPa at 20°C: 0.72
Relative vapour density (air = 1): 4.72
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02
Flash point: 30°C c.c.
Auto-ignition temperature: 285°C
Octanol/water partition coefficient as log Pow: 1.61 (calculated)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour and by ingestion. Effects of short-term exposure The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. See Notes. The effects may be delayed.	Inhalation risk A harmful contamination of the air will be reached very quickly on evaporation of this substance 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 and by ingestion.

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. See Notes. The effects may be delayed.

Inhalation risk
A harmful contamination of the air will be reached very quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
MAK: 1.1 mg/m³, 0.2 ppm; peak limitation category: I(2); pregnancy risk group: C

ENVIRONMENT
The substance is toxic to aquatic organisms.

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 by an authorized person, should be considered.

ADDITIONAL INFORMATION

EC Classification
Symbol: T; R: 10-23-34; S: (1/2)-26-36-45

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