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METRIBUZIN ICSC: 0516
Date of Peer Review: March 1998

4-Amino-6-tert-butyl-3-methylthio-as-triazin-5-one
4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one
CAS # 21087-64-9 C8H14N4OS
RTECS # XZ2990000 Molecular mass: 214.3
UN # 3077
EC # 606-034-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
Water spray, powder.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest.
Skin
Protective gloves.
Rinse and then wash skin with water and soap.
Eyes
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Rest.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT let this chemical enter the environment. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Then remove to safe place.
EU Classification
Symbol: Xn, N
R: 22-50/53
S: (2)-60-61
UN Classification
UN Hazard Class: 9
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-90GM7-III
Store in an area without drain or sewer access.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
METRIBUZIN ICSC: 0516
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes including nitrogen oxides and sulfur oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 mg/m as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
Exposure at high levels may result in depression of the central nervous system.

PHYSICAL PROPERTIES
Melting point: 125C
Density: 1.28 g/cm
Solubility in water, g/100 ml at 20C: 0.12
Vapour pressure, Pa at 20C: <1
Octanol/water partition coefficient as log Pow: 1.6
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.
NOTES
Bay 61597, Bay DIC 1468, Bayer 94337, Bayer 6159H, Bayer 6443H, DIC 1468, Lexone, Sencor, Sencoral, Sencorer, and Sencorex are trade names.
The cards has been partly updated in April 2005. See sections Environmental Data, EU classification, Occupational Exposure Limits.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor 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
IPCS, CEC 1999