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Orthoboric acid(10043-35-3)

Orthoboric acid(10043-35-3)
Product IdentificationBack to Contents
【Product Name】

Orthoboric acid

Boron trihydroxide
Hydrogen orthoborate
Orthoboric acid
Terminator DF


【Molecular Weight】



【RTECS Class】

Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data; Primary Irritant


1585 (G)
【EC Index Number】

Physical and Chemical PropertiesBack to Contents

Colorless, odorless scales or white powder.
【Solubility in water】

49 g/L
【Melting Point】

【Vapor Pressure】

2 (20 C)

1.435 g/cm3 (15 C)

8.91 (pKa)
【Heat Of Vaporization】

98.1 kJ/mol

Weatherproofing wood, nickling baths, for printing & dyeing, & for impregnating wicks, manufacture cements, crockery, porcelain, enamels, glass, borates, leather, carpets, hats, soaps, artificial gems, in painting, photography, electric condensers, hardening steel.
【Odor threshold】

【Refractive Index】

First Aid MeasuresBack to Contents

Induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Handling and StorageBack to Contents

Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.

Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards IdentificationBack to Contents

May cause respiratory tract irritation.

May cause skin irritation. May be absorbed through damaged or abraded skin in harmful amounts.

May cause eye irritation.

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May cause tissue anoxia, characterized by weakness, headache, dizziness, confusion, cyanosis, weak and irregular heart beat, collapse, unconsciousness, convulsions, coma and death.
【EC Risk Phrase】

R 37
【EC Safety Phrase】

S 22 24/25
Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
【Exposure Effects】

Prolonged or repeated skin contact may cause dermatitis. May cause borism characterized by dry skin, skin eruptions, and gastric disturbances.. Infants and young children are more susceptible to boric poisoning.
【Exposure limit(s)】

【Poison Class】

Fire Fighting MeasuresBack to Contents
【Fire Fighting】

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
【Fire Potential】

Not flammable
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Provide ventilation.
Stability and ReactivityBack to Contents

Incompatible with acetic anhydride and potassium. Reacts with basic materials to form borate salts.

Stable at room temperature in closed containers under normal storage and handling conditions.

Oxides of boron.
Transport InformationBack to Contents
【HS Code】

2810 00 90
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