Product Identification

Product Name

Chlorophos

Synonyms

(2,2,2-Trichloro-1-hydroxyethyl)-phosphonic acid, dimethyl ester
2,2,2-Trichloro-1-dimethoxyphosphorylethanol
Chlorofos
Metrifonate
O,O-Dimethyl-1-hydroxy-2,2,2-trichloroethylphosphonate

CAS

52-68-6

Formula

C4H8Cl3O4P

Molecular Weight

257.44

EINECS

200-149-3

RTECS

TA0700000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant

Merck

12,9753

Beilstein/Gmelin

1709434

Beilstein Reference

4-01-00-03147

EC Index Number

015-021-00-0

EC Class

Harmful; Sensitising

Physical and Chemical Properties

Appearance

Trichlorfon is a white crystalline solid.

Solubility in water

Slightly soluble

Melting Point

113

Boiling Point

269

Vapor Pressure

0.001 (25 C)

Density

1.73 g/cm3 (20 C)

pKa/pKb

10.29 (pKa)

Partition Coefficient

.51

Heat Of Vaporization

58.9 kJ/mol

Usage

Insecticide, acaricide.

Vapor Density

8.9

Refractive Index

1.3439 (20 C)

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. May cause effects similar to those described for ingestion.

Skin

May cause skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May be harmful if absorbed through the skin.

Eyes

May cause mild eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause central nervous system effects and/or neurological effects. May be harmful if swallowed.

Hazards

Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

UN (DOT)

2783

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Chronic ingestion may cause central nervous system failure.

Poison Class

3

Fire Fighting Measures

Flash Point

116

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Use extinguishing media appropriate to the surrounding fire. Substance is noncombustible. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. Do NOT get water inside containers. Do NOT use straight streams of water. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use water spray, fog or regular foam. Cool containers with flooding quantities of water until well after fire is out.

Fire Potential

May burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities

Oxidizing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Hydrogen chloride, carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

2783

Hazard Class

6.1

Packing Group

I; II; III