Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity
Home > 5-Bromo-6-methyl-3-(1-methylpropyl)-2,4(1h,3h)-pyrimidinedione > 5-Bromo-6-methyl-3-(1-methylpropyl)-2,4(1h,3h)-pyrimidinedione(314-40-9)

5-Bromo-6-methyl-3-(1-methylpropyl)-2,4(1h,3h)-pyrimidinedione(314-40-9)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity

Product Identification

Product Name
5-Bromo-6-methyl-3-(1-methylpropyl)-2,4(1h,3h)-pyrimidinedione
Synonyms
5-Bromo-3-sec-butyl-6-methyluracil
5-Bromo-6-methyl-3-(1-methylpropyl)uracil
Herbicide 976
Hyvar X
Hyvarex
CAS
314-40-9
Formula
C9H13BrN2O2
Molecular Weight
261.12
EINECS
206-245-1
RTECS
YQ9100000
RTECS Class
Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector
Merck
12,1402
Beilstein/Gmelin
647896
Beilstein Reference
5-24-07-00040

Physical and Chemical Properties

Appearance
Colorless to white odorless crystalline solid. Commercially available as a wettable powder or in liquid formulations.
Solubility in water
800 mg/L
Melting Point
158 - 159
Boiling Point
411
Vapor Pressure
.0000003
Density
1.55 g/cm3 (20 C)
pKa/pKb
9.30 (pKa)
Partition Coefficient
2.11
Usage
Herbicide.

First Aid Measures

Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage
Store in cool, dry place. Exposure of water-soluble formulations to air can cause some loss of water solubility.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion
Nausea, vomiting, and diarrhea may be noted following ingestion.
Inhalation
Symptoms: irritation eyes, skin, upper respiratory system; in animals: thyroid injury Target Organs: Eyes, skin, respiratory system, thyroid.
Skin
Cyanosis unresponsive to oxygen therapy may be noted in patients with methemoglobinemia due to absorption of excessive amounts of these agents.
Eyes
See inhalation.

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate personal protective clothing to prevent skin contact.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Exposure limit(s)
NIOSH REL: TWA 1 ppm (10 mg/m3)
Poison Class
4

Fire Fighting Measures

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 agent most appropriate to extinguish fire.
Fire Potential
Active ingredient and dry formulations are non-flammable; the liquid formulation (hyvar-xl) is a combustible mixture which should be kept away from heat and open flame.

Accidental Release Measures

Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity

Stability
Stable up to MP and slowly sublimes @ temperature just below its MP active ingredient is chemically stable under normal storage conditions stable in aqueous bases. Slowly decomposed by concentrated acids.
Incompatibilities
Strong oxidizing agents.
Decomposition
When heated to decomposition it emits very toxic fumes of hydrogen bromide and nitrogen oxides.
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