Product Name: Bis-(3-Triethoxysilane Propyl)-Disulfide and Carbon Black Mixture
Chemical Family: Organosilane and Fine Particle Carbon Allotrope
Synonyms: Silane Disulfide with Carbon Black
Recommended Uses: Rubber compounding, tire manufacturing, industrial adhesives
Manufacturer Contact: Refer to supplier database for specific contact information
Emergency Telephone: Refer to regional emergency response contacts
GHS Classification: Skin Irritant (Cat 2), Eye Irritant (Cat 2A), Respiratory Irritant, Carcinogen (Carbon Black, Cat 2)
Signal Word: Warning
Hazard Statements: May cause skin and eye irritation, suspected of causing cancer through inhalation, may cause respiratory tract irritation, prolonged exposure can lead to chronic health effects
Precautionary Statements: Avoid inhalation of dust, avoid contact with eyes and skin, use only outdoors or in well-ventilated areas, wear protective gloves/clothing/eye protection
Other Hazards: Dust may form explosive mixtures in air; silane component hydrolyzes to form ethanol and presents additional flammability risk
Bis-(3-Triethoxysilane Propyl)-Disulfide: 30–50%
CAS Number: 56706-10-6
Carbon Black: 50–70%
CAS Number: 1333-86-4
Impurities: Trace organosilanes, sulfur compounds (less than 1% total)
Mixture Type: Solid powder blend, not a solution or dispersion
Inhalation: Move to fresh air, monitor breathing, provide oxygen or artificial respiration as needed, seek medical attention if symptoms persist
Skin Contact: Wash thoroughly with soap and water for at least 15 minutes, remove contaminated clothing, consult physician if irritation develops
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, continue rinsing, seek medical advice if irritation persists
Ingestion: Rinse mouth, do not induce vomiting unless directed by medical professional, get immediate medical attention
Suitable Extinguishing Media: Use water spray, foam, dry chemical, or carbon dioxide
Unsuitable Media: Use of high pressure water jets can disperse dust
Special Hazards: Decomposition products may include silicon oxides, sulfur oxides, carbon monoxide, carbon dioxide, and ethanol vapors
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear
Other Information: Dust accumulation may pose an explosion hazard, cool exposed containers with water
Personal Precautions: Evacuate area, avoid dust generation, wear appropriate respirator, gloves, and protective clothing
Environmental Precautions: Prevent entry into sewers or waterways, contain spill using inert materials
Methods for Cleanup: Use vacuum or moist sweeping to minimize dust, collect in containers for disposal according to local regulations, ventilate area after cleanup
Special Considerations: Avoid use of compressed air in cleaning to reduce airborne dust
Handling: Use only in well-ventilated areas, avoid breathing dust or vapors, avoid contact with skin and eyes, handle using engineering controls to limit exposure
Storage: Store in tightly sealed containers in a cool, dry, well-ventilated place, keep away from moisture, sources of ignition, and incompatible substances such as strong oxidizers
Other Storage Information: Store at ambient temperature away from direct sunlight, label containers clearly, implement secondary containment for large quantities
Occupational Exposure Limits: Carbon Black (ACGIH TLV: 3.5 mg/m³ inhalable fraction); Silane compound: no established exposure limit
Engineering Controls: Local exhaust ventilation, process enclosure where feasible
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, approved respirator with particulate filter, coveralls, safety boots
Hygiene Measures: Wash hands and face after handling, do not eat, drink, or smoke in work area, launder contaminated clothing before reuse
Environmental Exposure Controls: Procedures to control emissions to air and water, spill containment systems
Appearance: Black powder
Odor: Slightly sulfurous
Odor Threshold: Not established
pH: Not applicable (solid)
Melting Point/Freezing Point: Carbon Black: over 3500°C, Silane compound decomposes
Boiling Point / Range: Not measurable for mixture; silane portion decomposes before boiling
Flash Point: Not applicable (will not flash under normal conditions)
Evaporation Rate: Not determined (non-volatile solids)
Flammability: Dust can be combustible in air
Upper/Lower Flammability or Explosive Limits: Not established for mixture
Vapor Pressure: Negligible
Vapor Density: Not applicable
Relative Density: Approx. 1.7 (mixture)
Solubility: Insoluble in water; silane reacts slowly
Partition Coefficient n-octanol/water: Not determined
Auto-Ignition Temperature: > 400°C
Decomposition Temperature: > 200°C (silane decomposes to ethanol and sulfur compounds)
Viscosity: Not measurable
Particle Size: Fine powder, may contain respirable fraction
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Silane reacts with water, alcohols, and acids to release ethanol
Hazardous Reactions: Mixture with strong oxidizers enhances risk of combustion, carbon black dust may explode in air under certain conditions
Conditions to Avoid: Contact with open flames, sparks, strong oxidizers, moisture
Incompatible Materials: Oxidizing agents, strong acids, alkalis
Hazardous Decomposition Products: Silicon oxides, sulfur oxides, carbon oxides, ethanol, low-molecular-weight organic compounds
Routes of Exposure: Inhalation of dust, skin contact, eye contact, ingestion
Acute Effects: Irritation to skin, eyes, respiratory tract; coughing, sneezing, redness, itching
Chronic Effects: Prolonged inhalation of carbon black dust linked to lung effects and risk for cancer, repeated skin contact can cause dermatitis
Toxicity Data: Carbon Black LD50 oral (rat) > 8000 mg/kg; no acute toxicity data available for silane mixture
Carcinogenicity: IARC Group 2B (possibly carcinogenic to humans - carbon black inhalation route)
Other Health Effects: No evidence of reproductive toxicity or genetic mutations at workplace exposure levels, silica byproducts from reaction can present additional risk over long exposure
Aquatic Toxicity: Low solubility limits aquatic toxicity, carbon black is not acutely toxic to aquatic organisms
Persistence and Degradability: Not readily biodegradable, persists in the environment
Bioaccumulation Potential: Minimal for carbon black and silane, physical form limits bioavailability
Mobility in Soil: Fine particles can be transported, though largely immobilized due to size and hydrophobicity
Other Adverse Effects: Can contribute to particulate matter in air and water; silane byproducts such as ethanol may impact local microbial populations
Waste Treatment Methods: Dispose of according to national and local regulations
Disposal of Waste: Collect in a tightly closed container for authorized landfill or incineration
Contaminated Packaging: Clean thoroughly before recycling or disposal
Precautions: Do not discharge to environment, prevent dust release during waste handling, coordinate with licensed waste disposers
UN Number: Not classified as hazardous for transportation based on current international regulations
UN Proper Shipping Name: Not regulated
Transport Hazards Class: Not applicable
Packing Group: Not assigned
Marine Pollutant: No
Special Precautions: Transport in closed, properly labeled containers, avoid container damage and spillage
OSHA Hazard Communication: Covered under hazard communication standard for irritant and carcinogen
EPA TSCA Status: Components listed or exempt
REACH Status: Registered or pre-registered under current guidelines
Other International Regulations: Carbon black listed as hazardous under several regulatory frameworks, silane subject to workplace exposure limits in some jurisdictions
Labeling Requirements: GHS labels including pictograms for irritant and health hazard, details on proper handling and response
