International Chemical Safety Cards

DAZOMET ICSC: 0786
DAZOMET
3,5-Dimethyl-1,3,5-thiadiazine-2-thione
Tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione
Dimethylformocarbothialdine
C5H10N2S2
Molecular mass: 162.3
CAS # 533-74-4
RTECS # XI2800000
ICSC # 0786
UN # 2588
EC # 613-008-00-X
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible under specific conditions. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


 
EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE! AVOID ALL CONTACT!

INHALATION Burning sensation. Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
SKIN Redness. Pain.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
EYES Redness. Pain.
Safety goggles or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION See Notes.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).
Provision to contain effluent from fire extinguishing. Separated from acids, food and feedstuffs. Cool. Dry. Keep in a well-ventilated room.
Do not transport with food and feedstuffs.
Xn symbol
R: 22-36
S: 15-22-24
UN Hazard Class: 6.1
UN Packing Group: III
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0786 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

DAZOMET ICSC: 0786

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PHYSICAL STATE; APPEARANCE:
WHITE OR COLOURLESS CRYSTALS.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes (nitrogen oxides, sulfur oxides), on contact with acids producing carbon disulphide, and in the presence of moisture or water producing gazeous products (e.g. methyl isothiocyanate, formaldehyde, hydrogen sulfide).

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.
PDK: 2 mg/m3 (USSR 1991).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on dispersion.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization (see Notes).
PHYSICAL
PROPERTIES
 Melting point (decomposes): 104-105°C
Relative density (water = 1): 1.3
Solubility in water: poor (3 g/100 ml at 20°C)
Vapour pressure, Pa at 20°C: 0.0003		 Relative vapour density (air = 1): 5.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: see Notes°C
ENVIRONMENTAL
DATA
 This substance may be hazardous to the environment; special attention should be given to fish, crustacea and plants.
NOTES
The technical grade is 98% pure; dazomet is moderately stable but is sensitive to temperature > 35°C and to moisture. The substance is combustible but no flash point is available in literature. Data are insufficiently available on the effect of this substance on human health, therefore utmost care must be taken. Carrier solvents used in commercial formulations may change physical and toxicological properties. Basamid, Mylone, Fennosan B 100, Crag Fungicide 974, Fennosan B100 are trade names.
ADDITIONAL INFORMATION


ICSC: 0786 DAZOMET
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.