Product Identification

Product Name

Carbonochloridic acid 1-methylethyl ester

Synonyms

Carbonochloridic acid, 1-methylethyl ester
Chloroformic acid, isopropyl ester
Isopropyl chlorocarbonate

CAS

108-23-6

Formula

C4H7ClO2

Molecular Weight

122.56

EINECS

203-563-2

RTECS

LQ6475000

RTECS Class

Primary Irritant

Beilstein/Gmelin

506416

Beilstein Reference

4-03-00-00024

Physical and Chemical Properties

Appearance

Colorless liq. Pungent.

Solubility in water

Insoluble

Melting Point

-81

Boiling Point

103

Density

1.08 g/cm3 (20 C)

Partition Coefficient

1.51

Usage

Chemical intermediate for free-radical polymerization initiators, organic synthesis.

Vapor Density

4.2

Refractive Index

1.4013 (20 C)

First Aid Measures

Ingestion

Emesis not recommended - inducing vomiting is not indicated due to this chemical's irritant properties. Dilution - following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child). Gastric lavage/precautions

Inhalation

Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

Ingestion may cause burns of the esophagus or gastrointestinal tract.

Inhalation

The irritation may be only mild enough to cause cough and dyspnea, or may cause noncardiogenic pulmonary edema and lung tissue destruction.

Skin

Dermal irritation, burns, and sensitization may occur.

Eyes

See Inhalation.

Hazards

Extremely dangerous; this chemical has exploded while stored in refrigerator. Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Like other chlorides, when heated to decomposition or on contact with acids or acrid fumes, they evolve highly toxic chloride fumes. Reacts violently with phosgene. Unstable, avoid phosgene

UN (DOT)

2407

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Poison Class

1

Fire Fighting Measures

Flash Point

20 (closed cup)

Autoignition

>500

Fire Fighting

Isolate for 1/2 mile in all directions if tank car or truck is involved in fire.Keep unnecessary people away and isolate hazard area. Stay upwind and keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing. For small fires, use dry chemical, carbon dioxide, water spray or foam. For large fires, use water spray, fog or foam. Do not get water inside container. Cool containers exposed to flame with water until well after fire is out. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire.

Upper exp. limit

15

Lower exp. limit

4

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.

Stability and Reactivity

Incompatibilities

Attacks many metals especially in humid atmosphere May react vigorously or explosively

Stability

Hydrolyzes readily in the presence of water or moist air.

Decomposition

May explode on heating. Decomposes on heating or on contact with acids producing toxic and corrosive fumes including chlorine and phosgene.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2407

Hazard Class

6.1

Packing Group

I