- Potassium tetraborate-4-hydrate
- Boron potassium oxide (B4K2O7)
- Boric acid (H2B4O7), dipotassium salt
Odorless, white crystalline powder.
Registry Numbers and Inventories.
Swiss Giftliste 1
Melting point, °C
Solubility in water
158 g/L (20 C)
Hazards and Protection.
Store in a cool, dry area. Keep containers tightly closed and upright.
Wear full protective clothing (long-sleeve shirt and trousers) and cotton (or similar) gloves when handling dry product. Use impervious gloves for handling product solutions. Under normal conditions, wear safety glasses. Under dusty conditions, wear chemical safety goggles.
A high-efficiency NIOSH-approved dust respirator should be used for dusty conditions or when transferring product from containers.
Sweep or shovel spilled material into containers with a minimum of dusting. Close, label and store container for later disposal. Flush area with water to complete clean-up.
Stable under normal conditions.
Can react explosively if heated in the presence of zirconium.
Water or any standard extinguishing agent can be used. Use water spray to cool fire-exposed containers. Firefighters should wear full protective clothing and NIOSH- approved, self-contained breathing apparatus if fire produces irritating fumes.
Material will not burn but melts @ 815 C to form a glassy, flowable material that might ignite combustibles on contact.
Harmful if ingested. Symptoms include nausea, headache, chills and general weakness. Large doses may cause liver and kidney damage, convulsions, cardiac arrhythmias, and potentially fatal respiratory collapse. Overall toxicity estimated to be moderate.
Product dusts may irritate the throat and respiratory tract.
May cause irritation, especially if contact is prolonged or repeated. Prolonged exposure to broken or abraded skin may result in symptoms similar to those of ingestion.
Dusty or misty conditions can cause eye irritation.
If conscious, give several glasses of water or milk and induce vomiting by touching finger to back of throat. Get medical attention.
Remove to fresh air. If not breathing, give artificial respiration, preferably mouth-to-mouth. If breathing is difficult, give oxygen if a qualified operator is available. Get medical attention.
Wash with plenty of soap and water, then flush with water until all chemical is removed. Remove any contaminated clothing and wash before reuse. Get medical attention if irritation persists.
Immediately flush eyes with plenty of water for at least 15 minutes. Get medical attention should discomfort or irritation persist.