Butyl chloroformate

136.577

136.58

209-750-5

3TGX130CB0

1593

8428

2743

DTXSID7060461

2915900090

26.30000

2.50

N-butyl chloroformate appears as a colorless liquid. Flash point near 70°F. Very toxic by inhalation. Denser than water. Used to make other chemicals.

1.074 g/cm³ @ Temp: 25 °C

-70 °C

142 °C

25.0±0.0 °C

1.420

DECOMPOSES

2.42 psi ( 20 °C)

Relative vapour density (air = 1): 4.72

Highly flammable. Decomposes exothermically in water to give hydrochloric acid and organic acids.

Acyl Halides, Sulfonyl Halides, and Chloroformates

Highly Flammable

N-BUTYL CHLOROFORMATE is incompatible with bases (including amines), with water, with strong oxidizing agents, with alcohols. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].

285 °C

I

6.1

UN 2743 6.1/PG 2

1

R10:Flammable. R23:Toxic by inhalation. R34:Causes burns.

S26-S36-S45

T

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.

P261-P280-P305 + P351 + P338-P310

H226-H314-H331

Special Hazards of Combustion Products: Irritating and toxic hydrogen chloride and phosgene may be formed. Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flashback. (USCG, 1999)|Flammable. Gives off irritating or toxic fumes (or gases) in a fire. Above 30 °C explosive vapour/air mixtures may be formed.

|Danger|H226: Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P321, P363, P370+P378, P403+P233, P403+P235, P405, and P501|H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P284, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P320, P321, P330, P363, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 138 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Excerpt from ERG Guide 155 [Substances - Toxic and/or Corrosive (Flammable / Water-Sensitive)]: Note: Most foams will react with the material and release corrosive/toxic gases. CAUTION: For Acetyl chloride (UN1717), use CO2 or dry chemical only. SMALL FIRE: CO2, dry chemical, dry sand, alcohol-resistant foam. LARGE FIRE: Water spray, fog or alcohol-resistant foam. FOR CHLOROSILANES, DO NOT USE WATER; use AFFF alcohol-resistant medium-expansion foam. Move containers from fire area if you can do it without risk. Use water spray or fog; do not use straight streams. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2016)|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.

Excerpt from ERG Guide 155 [Substances - Toxic and/or Corrosive (Flammable / Water-Sensitive)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2743 datasheet. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 155 [Substances - Toxic and/or Corrosive (Flammable / Water-Sensitive)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. A vapor-suppressing foam may be used to reduce vapors. FOR CHLOROSILANES, use AFFF alcohol-resistant medium-expansion foam to reduce vapors. DO NOT GET WATER on spilled substance or inside containers. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Prevent entry into waterways, sewers, basements or confined areas. SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean, non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal. (ERG, 2016)

NIOSH approved airline respirator with full face piece; chemical protective gloves and clothing. (USCG, 1999)

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.

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.

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

The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema. The effects may be delayed.

NO open flames, NO sparks and NO smoking. Above 30 °C use a closed system, ventilation and explosion-proof electrical equipment.

STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!

Use ventilation, local exhaust or breathing protection.

Protective gloves. Protective clothing.

Wear face shield or eye protection in combination with breathing protection.

Inhalation of vapor irritates nose and throat and can cause delayed pulmonary edema. Liquid irritates eyes and causes severe skin burns and irreversible skin damage if allowed to remain. Can cause blindness. Ingestion causes burns of mouth and stomach. (USCG, 1999)|Corrosives

INHALATION: Remove victim from exposure; if breathing stops, administer artificial respiration; If breathing is difficult, give oxygen; call physician. EYES: Irrigate with copious amounts of water for at least 15 min.; call physician if needed. SKIN: Flush with water for 15 min.; get medical attention for burns. INGESTION: Give large amounts of water; do NOT induce vomiting; get medical attention. (USCG, 1999)

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

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

Sore throat. Burning sensation. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed.

Redness. Pain. Skin burns.

Redness. Pain. Severe deep burns.

Carbonochloridic acid, butyl ester: ACTIVE

Health Hazards -> Corrosives