Product Identification

Product Name

1,3-Ethylenethiourea

Synonyms

2-Imidazolidinethione
2-Mercaptoimidazoline
ETU
Imidazolidine-2-thione

CAS

96-45-7

Formula

C3H6N2S

Molecular Weight

102.16

EINECS

202-506-9

RTECS

NI9625000

RTECS Class

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

Merck

13,3837

Beilstein/Gmelin

106275

Beilstein Reference

5-24-01-00165

EC Index Number

613-039-00-9

EC Class

Toxic for reproduction Category 2; Harmful

Physical and Chemical Properties

Appearance

White to pale green crystals or an off-white solid. Odorless when pure, but technical product may have an amine odor.

Solubility in water

20 g/L

Melting Point

196 - 199

Vapor Pressure

16

Density

1.417 g/cm3

Partition Coefficient

-.66

Usage

It was found that etu was present in 28 different ethylenebisdithiocarbamate commercial products.

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

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. Wash clothing before reuse.

Eyes

Immediately 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 container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.

Hazards Identification

Inhalation

Causes irritation of the mucous membrane and upper respiratory tract.

Skin

Causes skin irritation. May cause allergic sensitization in certain individuals.

Eyes

Causes eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed. Rapidly absorbed when ingested and disseminated throughout the body. Strongly accumulted by thyroid tissue and slowly released.

EC Risk Phrase

R 61 22

EC Safety Phrase

S 53 45

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

Possible cancer hazard based on tests with laboratory animals. Laboratory experiments have resulted in mutagenic effects. May be rapidly transferred across the placenta and cause adverse fetal effects.

Exposure limit(s)

NIOSH REL: Ca Use encapsulated form. See Appendix A NIOSH IDLH: Potential occupational carcinogen

Poison Class

1*

Fire Fighting Measures

Flash Point

252

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. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Incompatibilities

Acrolein, strong oxidizing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Transport Information

UN Number

2811

HS Code

2933 29 90