Product Identification

Product Name

TMTD

Synonyms

bis(Simethylthiocarbamyl)disulfide
Dimethylcarbamothioylsulfanyl dimethylaminomethanedithioate
Nobecutan
Rezifilm
Tetramethylthioperoxydicarbonicdiamine
Tetramethylthirium disulfide

CAS

137-26-8

Formula

C6H12N2S4

Molecular Weight

240.43

EINECS

205-286-2

RTECS

JO1400000

RTECS Class

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

Merck

12,9510

Beilstein/Gmelin

1725821

Beilstein Reference

4-04-00-00242

EC Index Number

006-005-00-4

EC Class

Mutagenic Category 3; Harmful; Irritant; Sensitising

Physical and Chemical Properties

Appearance

White to yellowish to greyish powder or crystals, characteristic odor.

Solubility in water

30 mg/L

Melting Point

148 - 152

Boiling Point

307

Vapor Pressure

0.0007 (25 C)

Density

1.426 g/cm3

pKa/pKb

13.18 (pKb)

Partition Coefficient

1.76

Heat Of Vaporization

54.8 kJ/mol

Usage

Fungicide for large brown patch snowmold and dollar spot on fine turfs.

Saturation Concentration

Very low based on vapour pressure at 20 C

Odor threshold

5 mg/m3

First Aid Measures

Ingestion

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

Inhalation

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

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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 cool, dry, well-ventilated 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. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Harmful if inhaled. Causes respiratory tract irritation.

Skin

May cause skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.

Eyes

Causes eye irritation.

Ingestion

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

EC Risk Phrase

R 20/22 36/37 43 68

EC Safety Phrase

S 36/37

UN (DOT)

2771

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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

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

Repeated or prolonged exposure may cause allergic reactions in sensitive individuals.

Exposure limit(s)

TLV: ppm; 1 mg/m3 (ACGIH 1991-1992). PDK: 0.5 mg/m3 P (USSR 1991). OSHA PEL: TWA 5 mg/m3 NIOSH REL: TWA 5 mg/m3 NIOSH IDLH: 100 mg/m3

Poison Class

3

Fire Fighting Measures

Flash Point

139

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. Containers may explode when heated. Extinguishing media: Do NOT get water inside containers. 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

Non-Combustible

Accidental Release Measures

Small spills/leaks

Avoid runoff into storm sewers and ditches which lead to waterways. 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

Acids - oxidizing agents - reducing 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.

Combustion Products

Toxic and irritating oxides of sulfur are formed.

Transport Information

UN Number

2771

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2930 30 00