Product Identification

Product Name

4-CPA

Synonyms

2-(4-Chlorophenoxy)acetic acid
Acetic acid, (p-chlorophenoxy)
Parachlorophenoxyacetic acid
p-Chlorophenoxyacetic acid
Tomatotone

CAS

122-88-3

Formula

C8H7ClO3

Molecular Weight

186.59

EINECS

204-581-3

RTECS

AG0175000

RTECS Class

Agricultural Chemical and Pesticide; Drug; Mutagen

Beilstein/Gmelin

1211804

Beilstein Reference

4-06-00-00845

EC Index Number

607-073-00-3

EC Class

Harmful

Physical and Chemical Properties

Appearance

Prisms or needles from water.

Solubility in water

Slightly soluble.

Melting Point

160

Boiling Point

308

Density

1.53 g/cm3

pKa/pKb

3.56 (pKa)

Partition Coefficient

1.73

Usage

Plant growth regulator.

First Aid Measures

Ingestion

Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Get medical aid immediately. Vomiting may occur spontaneously. If vomiting occurs and the victim is conscious, give water to further dilute the chemical.

Inhalation

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

Skin

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

Eyes

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

Handling and Storage

Storage

Keep containers tightly closed. Store in a cool, dry area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not ingest or inhale. Use with adequate ventilation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. May cause irritation of the mucous membranes.

Skin

May cause skin irritation. Individuals with pre-existing skin orders may be more susceptible to the effects of this substance.

Eyes

May cause eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

EC Risk Phrase

R 22

UN (DOT)

2811

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Low dose exposures - vertigo, headache, malaise, and paresthesias may occur depending on the specific compound involved. High dose exposures - muscle twitching, spasms, profound weakness, polyneuritis, and unconsciousness may occur depending on the specific compound involved. Idiosyncratic reactions - peripheral neuropathies 2,4-D and 2,4,5-T have caused adverse reproductive effects in experimental animals. Allegations of human birth defects due to these compounds have not been confirmed.

Poison Class

4

Fire Fighting Measures

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. Extinguishing media: Use agent most appropriate to extinguish fire.

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

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Hydrogen chloride, carbon monoxide, carbon dioxide, chloride fumes.

Transport Information

UN Number

2811

HS Code

2918 90 90