- Herbicide 976
- Hyvar X
Colorless to white odorless crystalline solid. Commercially available as a wettable powder or in liquid formulations.
Registry Numbers and Inventories.
Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
158 - 159
Boiling point, °C
Vapor pressure, mmHg
1.55 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Hazards and Protection.
Store in cool, dry place. Exposure of water-soluble formulations to air can cause some loss of water solubility.
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.
Wear appropriate personal protective clothing to prevent skin contact.
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
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.
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.
Strong oxidizing agents.
When heated to decomposition it emits very toxic fumes of hydrogen bromide and nitrogen oxides.
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.
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.
NIOSH REL: TWA 1 ppm (10 mg/m3)
Nausea, vomiting, and diarrhea may be noted following ingestion.
Symptoms: irritation eyes, skin, upper respiratory system; in animals: thyroid injury Target Organs: Eyes, skin, respiratory system, thyroid.
Cyanosis unresponsive to oxygen therapy may be noted in patients with methemoglobinemia due to absorption of excessive amounts of these agents.
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.
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.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
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.