© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: Zinc Bisulfite
Chemical Formula: Zn(HSO3)2
CAS Number: 7329-62-0
SDS Number: ZBIS-2024
Recommended Use: Industrial water treatment, chemical manufacturing
Supplier Information: Available upon request
Emergency Phone: Local authorities or poison center
Classification: Eye Irritant (Category 2), Skin Sensitizer (Category 1), Acute Aquatic Toxicity (Category 2)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause allergic reactions, harmful to aquatic life
Precautionary Statements: Avoid breathing dust, wash hands thoroughly after handling, use personal protection, prevent release into environment
Pictograms: Exclamation mark, environment
Chemical Name: Zinc Bisulfite
Synonyms: Zinc hydrogen sulfite, zinc hydrogen sulphite
Concentration: 98-100%
Impurities: May contain small amounts of inorganic sulfites and water
Other Components: No significant non-hazardous components reported
Eye Contact: Rinse with water for at least 15 minutes, keep eyelids open, seek medical help if irritation persists
Skin Contact: Remove contaminated clothing, wash skin immediately with soap and water, consult physician if symptoms occur
Inhalation: Move person to fresh air, monitor for respiratory distress, call medical professional if symptoms develop
Ingestion: Rinse mouth, never induce vomiting, get immediate medical advice
Most Important Symptoms: Eye/skin redness, itching, possible shortness of breath, allergic reactions
Suitable Extinguishing Media: Dry chemical, CO2, water spray, foam
Unsuitable Media: Avoid direct water jet
Hazards from Combustion: Formation of toxic gases such as sulfur oxides and zinc oxides
Protective Equipment: Full protective suit, self-contained breathing apparatus
Special Methods: Remove containers from fire zone if safe, cool exposed tanks with water mist
Personal Precautions: Avoid dust formation, ventilate area, wear protective gear
Environmental Precautions: Prevent entry into waterways, sewers, or soil
Cleanup Methods: Collect using inert absorbent, sweep into container, dispose according to regulations
Other Instructions: Clean contaminated area with water, avoid dusty conditions, label waste containers clearly
Handling Procedures: Use only with adequate ventilation, avoid contact with skin and eyes, keep away from incompatible substances such as strong oxidizers
Storage Conditions: Store in cool, dry, ventilated location, keep containers tightly closed
Incompatible Materials: Acids, oxidizing agents, strong bases
Recommendations: Store away from direct sunlight and moisture, protect containers from physical damage
Exposure Limits: No workplace exposure limits established for Zinc Bisulfite; zinc compounds (as Zn) ACGIH TLV: 2 mg/m³
Engineering Controls: Local exhaust ventilation, process enclosures
Personal Protection: Safety goggles, chemical-resistant gloves, lab coat or apron, NIOSH-approved respirator in dusty areas
Hygiene Measures: Wash hands after handling, remove contaminated clothing, do not eat or drink in work area
Appearance: White to off-white crystalline powder
Odor: Slight sulfurous smell
Odor Threshold: Not determined
pH: 3.5–4.5 (10% solution)
Melting Point: Decomposes before melting
Boiling Point: Not applicable
Flash Point: Non-combustible
Evaporation Rate: Not relevant
Solubility: Soluble in water
Vapor Pressure: Negligible
Relative Density: 2.7–2.9
Partition Coefficient: Not available
Viscosity: Not applicable
Chemical Stability: Stable under normal conditions
Reactivity: Reacts with acids and oxidizers
Hazardous Reactions: Contact with acids releases sulfur dioxide gas
Decomposition Products: Sulfur oxides, zinc oxides
Other Concerns: Avoid moisture and strong heat sources; product may deteriorate above 100°C
Acute Toxicity: Low acute toxicity via oral, dermal, and inhalation routes (no reliable LD50 data; based on similar compounds)
Skin Corrosion/Irritation: Causes mild to moderate irritation
Eye Damage/Irritation: May cause redness, tearing, discomfort
Sensitization: Some reports of allergic skin reactions
Chronic Effects: Possible long-term dermatitis, no known carcinogenicity
Other Data: Prolonged or repeated exposure can affect respiratory tract
Acute Aquatic Toxicity: Harmful to fish, aquatic invertebrates; high releases can damage aquatic systems
Persistence and Degradability: Not readily biodegradable, contains non-volatile ions
Bioaccumulation: Zinc compounds may build up in aquatic life
Mobility in Soil: Moderate mobility expected; may leach given high water solubility
Other Environmental Hazards: Large spills can lower water oxygen content and pH, stressing local environments
Waste Treatment: Dispose according to local, state, and federal regulations
Methods: Use licensed chemical disposal company, do not release into drains, avoid landfill where possible
Contaminated Packaging: Rinse thoroughly before recycling or disposal
Precautions: Label waste, store in closed containers before final disposal
UN Number: Not classified as hazardous for DOT, IATA, or IMDG
Proper Shipping Name: Zinc Bisulfite
Transport Hazard Classes: Not regulated
Packing Group: Not applicable
Special Precautions: Avoid moisture during transit, secure containers to prevent spillage
TSCA Status: Listed in US Toxic Substances Control Act inventory
Right-to-Know Listings: Not listed in California Proposition 65, Massachusetts, New Jersey, or Pennsylvania lists as of June 2024
EU Regulations: Not listed as a substance of very high concern under REACH
OSHA Status: Not specifically regulated, but standard workplace safety rules apply
Other Notes: Subject to major spill notification requirements in some states and countries
