Product Identification

Product Name

2,2-Dichloropropionic acid

Synonyms

(Chlorothio)formyl chloride
2,2-Dichloropropanoic acid
Dalapon
Kenapon
Liropon
Proprop
S-Chloro chloromethanethioate

CAS

2757-23-5

CAS

75-99-0

Formula

C3H4Cl2O2

Formula

CCl2OS

Molecular Weight

130.97999999999999

Molecular Weight

142.97

EINECS

200-923-0

EINECS

220-415-2

RTECS

UF0690000

RTECS Class

Agricultural Chemical and Pesticide; Mutagen

Merck

13,2830

Beilstein/Gmelin

1750149

Beilstein/Gmelin

100872 (G)

Beilstein Reference

4-02-00-00753

EC Index Number

607-162-00-7

EC Class

Harmful; Irritant; Dangerous for the Environment

Physical and Chemical Properties

Appearance

A colorless liquid.

Solubility in water

Slightly soluble

Melting Point

7.8

Melting Point

98

Boiling Point

202

Vapor Pressure

5

Density

1.361 g/cm3 (20 C)

Density

1.569 g/cm3 (22 C)

pKa/pKb

1.53 (pKa)

Partition Coefficient

.778

Usage

Herbicide.

Vapor Density

1.4014

Odor threshold

2,500 mg/m3

Refractive Index

1.4532 (20 C)

Refractive Index

1.52 (20 C)

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.

Skin

Remove contaminated clothing. Wash skin and hair thoroughly; do two soap and water washings. Leather absorbs pesticides. Hence, leather should not be worn in the presence of pesticides and all contaminated leather should be discarded.

Skin

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.

Eyes

Immediately flush with running water for at least 20 minutes.

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.

Eyes

See Inhalation.

Handling and Storage

Storage

Keep in well ventilated area.

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

See Inhalation.

Inhalation

Aspiration of insecticide containing petroleum distillate may result in pneumonitis.

Skin

Extensive contact results in dermal irritation.

Eyes

See Inhalation.

Ingestion

Nausea, vomiting, and diarrhea may follow ingestion.

Hazards

Irritating fumes of hydrochloric acid may form in fire. Volatilizes with steam.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 22 38 41 52/53

EC Risk Phrase

R 34 36/37

EC Safety Phrase

S 26 36/37/39 45

EC Safety Phrase

S 26 39 61

UN (DOT)

1760

UN (DOT)

3265

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

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

Exposure Effects

CNS excitation, seizures, tremor, ataxia, agitation, nervousness, and amnesia may occur. Kelthane, perthane, methoxychlor, and hexachlorobenzene have little CNS toxicity; in extreme overdose CNS depression may occur. Organochlorine pesticides such as DDT pass through the placenta, with an average level in the newborn blood reaching around a third of that in maternal blood. They can also be found in breast milk. Excessive absorption of kepone (chlordecone) has depressed sperm counts and sperm motility in exposed workers.

Exposure limit(s)

NIOSH REL: TWA 1 ppm (6 mg/m3)

Fire Fighting Measures

Flash Point

>110

Fire Fighting

Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use water spray to knock-down vapors.

Fire Fighting

Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Dry chemical, carbon dioxide, alcohol-resistant foam or water spray.

Fire Potential

This material is combustible.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

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. Use water spray to knock-down vapors. Neutralize spilled material with crushed limestone, soda ash, or lime. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.

Stability and Reactivity

Incompatibilities

Reacts in this way with all bases, both organic (for example, the amines) and inorganic Can react with active metals to form gaseous hydrogen and a metal salt Flammable and/or toxic gases and heat are generated by the reaction with with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides.

Stability

Stable in dry form.

Combustion Products

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

Transport Information

UN Number

1760

UN Number

3265

Hazard Class

8

Packing Group

I; II; III