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METRIBUZIN

ICSC: 0516

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
C8H14N4OS
Molecular mass: 214.3
ICSC # 0516 		CAS # 21087-64-9
RTECS # XZ2990000
UN # 3077
EC # 606-034-00-8
March 23, 1998 Validated

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

STORAGE

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.
Store in an area without drain or sewer access.

Xn symbol
N symbol
R: 22-50/53
S: (2)-60-61
UN Hazard Class: 9
UN Packing Group: III
ICSC: 0516 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

METRIBUZIN

ICSC: 0516

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:


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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 mg/m3 as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK not established.
OSHA PEL†: none
NIOSH REL: TWA 5 mg/m3
NIOSH IDLH: N.D. See: IDLH INDEX


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.

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

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Melting point: 125°C
Density: 1.28
g/cm3
Solubility in water, g/100 ml at 20°C: 0.12
Vapour pressure, Pa at 20°C: <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.

N O T E S

Bay 61597, Bay DIC 1468, Bayer 94337, Bayer 6159H, Bayer 6443H, DIC 1468, Lexone, Sencor, Sencoral, Sencorer, and Sencorex are trade names.
Transport Emergency Card: TEC (R)-90GM7-III

ADDITIONAL INFORMATION



ICSC: 0516 METRIBUZIN
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, 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. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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