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BROMACIL ICSC: 1448
Date of Peer Review: May 2003

5-Bromo-3-sec-butyl-6-methyl uracil
5-Bromo-6-methyl-3-(1-methylpropyl) uracil
5-Bromo-6-methyl-3-(1-methylpropyl)-2,4(1H,3H)-pyrimidinedione
2,4(1H,3H)-Pyrimidinedione, 5-bromo-6-methyl-3-(1-methyl propyl)-
CAS # 314-40-9 C9H13BrN2O2
RTECS # YQ9100000 Molecular mass: 261.1
UN #
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough.

Fresh air, rest.
Skin Redness.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Nausea. Vomiting. Diarrhoea.
Do not eat, drink, or smoke during work.
Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT let this chemical enter the environment. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: P2 filter respirator for harmful particles.)
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE

Keep in a well-ventilated room. Separated from strong oxidants, and strong acids.
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

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BROMACIL ICSC: 1448
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes including hydrogen bromide and nitrogen oxides. The substance decomposes on contact with acids or oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 mg/m, as TWA; A3; (ACGIH 2003).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is mildly irritating to the eyes, the skin and the respiratory tract.

PHYSICAL PROPERTIES
Melting point: 158-160C
Density: 1.55 g/cm^3
Solubility in water, g/100 ml at 25C: 0.08
Vapour pressure, Pa at 25C: negligible
Octanol/water partition coefficient as log Pow: 1.88-2.11
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms.
NOTES
Carrier solvents used in commercial formulations may change physical and toxicological properties.
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