Product Name: Zinc Di(Benzimidazol-2-Yl) Disulphide
Synonyms: Zinc bis(2-benzimidazolyl) disulfide
Chemical Formula: C14H10N4S4Zn
CAS Number: 24334-20-5
Recommended Use: Industrial, rubber industry, additive in plastics
Supplier: Contact information on request
Emergency Contact: Emergency response number available through supplier
Classification: Harmful if swallowed, causes skin and eye irritation, may cause respiratory irritation
Hazard Symbol: Exclamation Mark (GHS07)
Health Effects: Ingestion can result in abdominal cramps, nausea, and vomiting. Inhalation of dust causes irritation to upper respiratory tract. Dust or direct contact leads to moderate to strong skin and eye irritation.
Precautionary Statements: Avoid breathing dust. Wear protective gloves and eye protection. Wash hands thoroughly after handling. Content may be hazardous to aquatic environments.
Chemical: Zinc Di(Benzimidazol-2-Yl) Disulphide
Concentration: > 98% (by weight)
Impurities: Trace organic solvents less than 1%, residual moisture up to 0.5%
Hazardous Components: Does not contain additional ingredients classified as hazardous under GHS.
Inhalation: Move affected person to fresh air, keep at rest, seek medical attention if symptoms persist.
Skin Contact: Rinse skin with running water, remove contaminated clothing, seek medical attention for persistent redness or irritation.
Eye Contact: Flush eyes gently with water for at least 15 minutes, remove contact lenses if present, medical help is recommended.
Ingestion: Rinse mouth, give water to drink only if conscious, do not induce vomiting, obtain immediate medical care.
Advice to Physician: Symptomatic treatment required. No known specific antidote.
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide.
Combustion Hazards: Hazardous decomposition creates toxic fumes, including sulfur oxides, zinc oxide, nitrogen oxides.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear.
Fire Fighting Procedures: Use water spray to cool exposed containers; prevent runoff into water bodies.
Personal Precautions: Use protective clothing, avoid inhalation and direct contact.
Environmental Precautions: Prevent further leakage; avoid discharge into soil and watercourses.
Methods for Cleaning Up: Collect spilled product using vacuum or dry sweeping, place in suitable container for disposal; ventilate area and wash contaminated surfaces.
Handling: Avoid dust formation. Handle in well-ventilated areas. Wash hands and face thoroughly after use. Do not eat, drink, or smoke during handling.
Storage: Keep containers tightly closed in dry, cool, and well-ventilated places. Store away from food, water sources, and incompatible materials such as strong acids and oxidizers. Ensure container is labelled and protected against physical damage.
Engineering Controls: Use local exhaust ventilation, handle in closed system where possible.
Occupational Exposure Limit: No established limit for this compound; global best practice suggests dust not exceed 5 mg/m³ (respirable fraction).
Personal Protective Equipment: Safety goggles, chemical-resistant gloves (nitrile or neoprene), long-sleeved clothing, approved dust respirator (P2 or N95 type).
Hygiene Measures: Observe good industrial hygiene practices; do not allow product to contact skin or eyes.
Appearance: Yellowish powder
Odor: Odorless
pH (aqueous solution): 5 - 7
Melting Point: 240–250°C (decomposes)
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable
Solubility: Insoluble in water, soluble in organic solvents (DMF, DMSO)
Density: 1.6–1.7 g/cm³
Vapor Pressure: Negligible at ambient temperature
Partition Coefficient (log Pow): Not determined
Decomposition Temperature: Over 240°C
Auto-Ignition Temperature: Not self-igniting
Explosive Properties: Not explosive
Stability: Stable under normal storage and handling conditions
Reactivity: Reacts with strong oxidizers and acids
Decomposition: Yields zinc oxide, sulfur dioxide, and nitrogen oxides when heated above decomposition temperature
Hazardous Reactions: Does not polymerize; avoid contact with oxidizing materials
Conditions to Avoid: Exposure to high heat, sources of ignition, and moisture
Acute Toxicity: Oral LD50 (rat): > 2000 mg/kg
Inhalation Toxicity: May cause respiratory tract irritation; not expected to be acutely toxic
Dermal Toxicity: May cause irritation on prolonged, repeated contact
Skin and Eye Irritation: Moderate irritant in animal and human studies
Sensitization: Not classified as a skin sensitizer
Chronic Effects: Long-term exposure not expected to result in significant toxicity; overexposure to zinc compounds has been linked to gastrointestinal symptoms and changes in blood chemistry
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified as hazardous in these categories based on available data
Ecotoxicity: Toxic to aquatic organisms; may cause long-term adverse effects in aquatic environments
Persistence and Degradability: Product contains components which are not readily biodegradable
Bioaccumulative Potential: Zinc compounds show limited bioaccumulation in aquatic systems
Mobility in Soil: Practically insoluble; low mobility under standard conditions
Other Adverse Effects: Zinc compounds at high concentrations may disrupt aquatic ecosystems and soil microbiology
Waste Treatment Methods: Dispose of in accordance with all local, regional, and national regulations
Disposal of Product: Waste should be handled by a licensed chemical disposal contractor. Incineration or landfill in approved facilities only
Disposal of Packaging: Rinse and recycle or dispose as hazardous waste. Prevent contamination of environment by keeping residues contained
UN Number: Not assigned
Proper Shipping Name: Not regulated as dangerous goods
Transport Hazard Class: Not classified
Packing Group: Not specified
Environmental Hazards: Avoid release to environment during transport
Transportation Precautions: Secure packaging to prevent damage, keep separated from food and incompatible materials
Labeling According to GHS: Signal word: Warning; Hazard statements as indicated above
Inventory Status: Listed on major international chemical inventories (REACH, TSCA, DSL, ENCS)
Regulations: Subject to workplace safety, health, and environmental regulations; not currently subject to specific restrictions under controlled substance or precursor legislation
Worker Protection: Required to provide training and access to MSDS, assure use of PPE, and apply engineering controls at place of work
Other Requirements: Storage and use require risk assessment, emergency planning, and regular review of control measures
