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Product Name: Boric Acid
Chemical Name: Orthoboric Acid
Synonyms: Boracic Acid, Hydrogen Borate, Acidum Boricum
CAS Number: 10043-35-3
Recommended Use: Industrial applications, laboratory chemicals, pest control, buffer solutions, glass manufacturing, flame retardants, medical antiseptics
Company Identification: Commonly supplied by chemical distributors, manufacturing plants, and laboratory suppliers
Contact Information: Emergency and technical support lines appear on packaging
Classification: According to GHS, Boric Acid appears as a suspected reproductive toxin (Category 1B), causes eye irritation (Category 2A), and long-term exposure potentially poses risk to fertility
Signal Word: Warning
Hazard Statements: May damage fertility or the unborn child; causes serious eye irritation; may cause respiratory irritation; occupational dust may trigger sneezing and mild cough
Pictograms: Health hazard symbol (exclamation mark and health hazard silhouette)
Precautionary Statements: Avoid inhalation of dust, wear eye protection, use in well-ventilated settings, avoid prolonged contact with skin or mucous membranes, wash hands after handling
Chemical Identity: Boric Acid
CAS Number: 10043-35-3
Purity: More than 99% boric acid for commercial and research use
Impurities: Trace elements or mineral residues can appear in bulk supply, depending on manufacturer
Molecular Formula: H3BO3
Molecular Weight: 61.83 g/mol
Other Components: No appreciable ingredients contribute to hazard classification
Inhalation: Move to fresh air; persistent irritation or coughing calls for medical attention
Skin Contact: Wash the affected area with soap and water; remove contaminated clothing; consult a doctor if rash, blister, or persistent redness develops
Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; seek medical advice for persistent discomfort
Ingestion: Rinse mouth, drink water to dilute in small amounts, seek medical attention if large quantities are swallowed or if adverse symptoms develop
Most Important Symptoms: Eye stinging, cough, mild gastric upset, possible gastrointestinal discomfort; large overdoses may cause more serious reactions like nausea, vomiting, skin rash, or convulsions
Immediate Medical Attention: Required in case of eye exposure, severe ingestion, or if symptoms do not subside with basic intervention
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: Do not use high-pressure water jets; dust clouds may spread
Specific Hazards: Non-flammable, does not support combustion, but toxic oxides of boron may form in extreme heat
Protective Equipment: Firefighters use full protective equipment and self-contained breathing apparatus because of possible irritant fumes
Special Precautions: Hot decomposition produces irritating or noxious gases such as boron oxides; keep containers cool with water spray during fire
Personal Precautions: Use proper protective gear: gloves, safety goggles, dust masks; avoid inhaling dust
Environmental Precautions: Prevent large releases from entering waterways or drains; avoid contamination of soil and natural bodies of water
Containment Methods: Sweep up spillage with care, collect in sealed containers; minimize dust generation
Cleanup Methods: Wet methods reduce airborne dust; ventilate area and dispose of waste according to local regulations
Emergency Procedures: Alert others in the area, use caution on slippery floors, and report significant spills to regulatory authorities if local laws require
Safe Handling: Keep containers tightly closed when not in use; avoid making dust clouds; use with proper exhaust ventilation; wash up after handling; do not consume food or drink in work areas
Storage Requirements: Store in cool, dry, well-ventilated location; separate from incompatible substances such as alkalis and strong oxidizers
Specific Considerations: Protect product from moisture; store away from heat sources; properly label all containers
Incompatible Materials: Strong bases (alkaline materials), potassium, and reducing agents react and compromise stability
Occupational Exposure Limits: ACGIH TLV: 2 mg/m3 (inhalable fraction), 6 mg/m3 STEL (short-term exposure limit)
Engineering Controls: Local exhaust ventilation or general ventilation maintains airborne levels below regulatory limits
Personal Protective Equipment: Dust mask or NIOSH-approved respirator, chemical-resistant gloves, safety glasses or face shield, lab coats or coveralls
Hygiene Measures: Wash thoroughly after handling and before eating, drinking, or smoking; remove contaminated clothing and launder before reuse
Other Protective Measures: Eyewash stations and emergency showers easily accessible in handling areas
Appearance: White odorless crystalline solid or powder
Odor: None
Odor Threshold: Not applicable
pH (1% solution): 3.8–4.8 (acidic)
Melting Point: 170.9°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not flammable
Evaporation Rate: Not volatile
Flammability: Non-flammable
Vapor Pressure: Negligible at room temperature
Vapor Density: Not applicable
Density: 1.435 g/cm³
Solubility: Soluble in water (57 g/L at 20°C), more soluble in hot water, practically insoluble in alcohol
Partition Coefficient (n-octanol/water): Log Kow: -0.757 (readily soluble in water)
Decomposition Temperature: Above 170°C releases water and forms metaboric acid
Viscosity: Not applicable
Chemical Stability: Stable under normal temperatures and storage conditions
Reactivity: Does not react with most common substances at room temperature
Potentially Hazardous Reactions: Can react with strong base or strong reducing agents causing hazardous byproducts
Conditions to Avoid: Excessive heat, contact with strong alkalis or oxidizers, moisture contamination
Hazardous Decomposition: Produces toxic boron oxides on heating or decomposition
Polymerization: Does not occur
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: LD50 (oral, rat): 2660 mg/kg; LD50 (dermal, rabbit): >2000 mg/kg
Skin Corrosion/Irritation: Non-irritant to most users, possible mild irritation with long exposure
Eye Damage/Irritation: Causes eye irritation (redness, tearing, pain)
Respiratory Effects: Possible cough, dry throat with high dust levels
Ingestion Effects: Large doses may cause nausea, vomiting, headache, diarrhea, and rashes
Long-Term Effects: Reproductive toxicity concerns with chronic high exposure; recognized as a developmental toxin in animal studies
Carcinogenicity: Not classified as carcinogenic by IARC, OSHA, NTP, or EPA
Other Data: No reports of genetic defects; no indication of bioaccumulation in human tissues
Ecotoxicity: Toxic to aquatic life in high concentrations, LC50 (fish, 96 hr): 74 mg/L; chronic exposure harms plant growth
Persistence and Degradability: Persists in environment, does not degrade easily
Bioaccumulative Potential: Low; does not build up in food chains
Mobility in Soil: Highly water-soluble, can leach into groundwaters and surface water
Other Adverse Effects: Excess levels in water cause environmental imbalances, leading to plant toxicity and reduced soil fertility in agriculture
Waste Methods: Dispose of solid waste in accordance with local, regional, and national regulations; avoid unauthorized release into environment
Product Disposal: For small-scale lab quantities, mix with ample water and flush into sewer if permitted by jurisdiction; for industrial amounts, use certified waste facility
Packaging Disposal: Clean, uncontaminated containers can be recycled; contaminated packaging requires special handling as hazardous waste
RCRA Status: Not regulated as hazardous waste under U.S. RCRA (Resource Conservation and Recovery Act), but state rules may differ
UN Number: Not regulated under UN transport rules
Proper Shipping Name: Not regulated for transport (non-hazardous)
Transport Hazard Class: None
Packing Group: None
Marine Pollutant: Not classified as a marine pollutant (IMDG code)
Special Transport Precautions: Prevent packaging damage, secure to avoid shifting; consider additional controls for bulk shipments near water sources
OSHA Status: Not specifically regulated as a hazardous chemical under OSHA 29 CFR 1910.1200 but reproductive toxicity warning required
TSCA Inventory: Listed in the U.S. Toxic Substances Control Act inventory
SARA Title III (EPCRA): Not subject to reporting under Sections 302, 304, or 313
California Prop 65: No components listed
REACH Status: Registered in the EU; subject to restrictions for use in consumer products with boron content above 0.3% due to reproductive toxicity
Other National Laws: Covered by workplace hazard communication standards, environmental discharge limits may apply internationally
