Product Identification

Product Name

Dithiobiuret

Synonyms

Carbamothioylthiourea
Dihydrothiuret
Imidodicarbonimidothioic diamide
Thioimidodicarbonic diamide

CAS

541-53-7

Formula

C2H5N3S2

Molecular Weight

135.21

EINECS

208-784-8

RTECS

EC1575000

RTECS Class

Other

Merck

13,3407

Beilstein/Gmelin

1756621

Beilstein Reference

4-03-00-00356

Physical and Chemical Properties

Appearance

Crystalline solid.

Solubility in water

Very soluble

Melting Point

189 - 190

Density

1.522 g/cm3 (20 C)

pKa/pKb

11.15 (pKa)

Usage

Plasticizer, rubber accelerator, intermediate in resin mfr, in making insecticides & rodenticides, can be used to delay wilting of flowers. Reagent for the photometric determination of mo(vi).

First Aid Measures

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Treatment should include recommendations listed in the oral exposure section when appropriate.

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

Watery diarrhea occurs in experimental animals and leads to fluid losses and dehydration.

Inhalation

Respiratory failure has been described in exposed experimental animals. This effect has not been described in exposed humans.

Hazards

When heated to decomposition, it emits highly toxic fumes of oxides of sulfur and nitrogen.

EC Risk Phrase

R 28

EC Safety Phrase

S 28 36/37 45

UN (DOT)

2811

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Poison Class

2

Fire Fighting Measures

Fire Fighting

(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Wear boots, protective gloves, goggles and self-contained breathing apparatus.(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use alcohol foam, carbon dioxide or dry chemical.

Accidental Release Measures

Small spills/leaks

(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Keep sparks, flames and other sources of ignition away. Keep material out of water sources and sewers. Avoid breathing dusts and fumes from burning material. Keep upwind; avoid bodily contact with the material. Do not handle broken packages without protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water.

Stability and Reactivity

Incompatibilities

May react with acids and reducing agents to form toxic hydrogen sulfide gas Organic amides/imides react with azo and diazo compounds to generate toxic gases.

Stability

No data.

Transport Information

UN Number

2811