Material Safety Data Sheet for Silicone Antifoam

1. Identification

Product Name: Silicone Antifoam
Chemical Family: Organosiloxane Compound
Synonyms: Polydimethylsiloxane Emulsion, Silicone Defoamer
Recommended Use: Industrial antifoaming agent for process liquids
Manufacturer: Refer to product supplier or label
Emergency Contact: Provided by local manufacturer or supplier
Product Code: Unique identifier supplied by bottle or drum labelling
Contact Number: Call the emergency number printed on the shipped document

2. Hazard Identification

Hazard Class: Non-hazardous under most regulatory systems
GHS Classification: Not classified as hazardous
Physical Hazards: May cause slippery surfaces if spilled
Health Hazards: May cause mild skin or eye irritation with prolonged exposure
Environmental Hazards: Can impact aquatic environments if released in quantity
Label Elements: No pictogram, no signal word, precautionary statements focus on avoidance of spill and good industrial hygiene
Route of Entry: Inhalation, skin and eye contact
Symptoms of Exposure: Redness or slight irritation on skin and eyes

3. Composition / Information on Ingredients

Chemical Name: Polydimethylsiloxane
CAS Number: 63148-62-9
Concentration Range: 10% - 60% (depends on form and manufacturer)
Water: 40% - 90%
Emulsifiers: Mixed surfactants, proprietary blend
Other Components: Trace residues of inorganic fillers or thickening agents, usually proprietary and present at less than 5%

4. First Aid Measures

Inhalation: Move to fresh air, seek medical advice if breathing becomes difficult
Skin Contact: Remove contaminated clothing, wash affected area with soap and water; seek medical attention if irritation persists
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing
Ingestion: Rinse mouth, do not induce vomiting, seek medical attention if feeling unwell
Most Important Symptoms: Skin redness, eye irritation, mild throat discomfort
Protection for First Aiders: Use gloves and avoid direct contact, wash thoroughly after assisting victim
Special Instructions: No specific antidote, treat symptomatically

5. Fire-Fighting Measures

Flammability: Not classified as flammable
Suitable Extinguishing Media: Water spray, dry powder, foam, carbon dioxide
Specific Hazards: Thermal decomposition may release small quantities of formaldehyde, carbon oxides, silicon oxides
Protective Equipment for Firefighters: Chemical resistant gear, SCBA (Self-Contained Breathing Apparatus)
Special Procedures: Evacuate area, use water to cool fire-exposed containers
Combustion Products: Carbon dioxide, carbon monoxide, formaldehyde traces, silicon dioxide dust

6. Accidental Release Measures

Personal Precautions: Avoid skin and eye contact, provide adequate ventilation, use protective equipment
Environmental Precautions: Prevent runoff into drains, surface water, or soil
Clean-up Procedures: Stop leak if safe, absorb with sand or inert material, shovel into waste containers, wash spill site with generous volumes of water to remove slippery residue
Waste Disposal: Place absorbed material in appropriate waste drums
Reporting: Notify relevant local authorities if significant spill occurs

7. Handling and Storage

Safe Handling Guidelines: Avoid spills that might create slip hazards, use only in well-ventilated areas, keep containers closed when not in use, practice good housekeeping
Storage Conditions: Store in cool, dry, well-ventilated area, protect from freezing and excessive heat, keep out of direct sunlight, store in original container
Incompatabilities: Do not store with strong oxidizing agents

8. Exposure Controls / Personal Protection

Occupational Exposure Limits: No established exposure limit for polydimethylsiloxane
Engineering Controls: Local exhaust ventilation if mist or vapors form
Personal Protective Equipment: Chemical resistant gloves, safety goggles or face shield, work clothing
Respiratory Protection: Use NIOSH-approved respirators if mist occurs
Hygiene Measures: Wash hands after using product and before meals, do not eat or drink in work area

9. Physical and Chemical Properties

Appearance: White, opaque to translucent liquid
Odor: Faint, characteristic silicone odor
pH: 6-8 (aqueous emulsion form)
Boiling Point: Above 100°C
Melting Point: Below 0°C
Flash Point: Not applicable to aqueous emulsions
Solubility: Dispersible in water (emulsion type)
Vapor Pressure: Very low
Viscosity: Thick liquid, viscosity varies by grade
Density: Around 1.0 g/cm³

10. Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: No dangerous reactions expected under normal conditions of use
Incompatible Materials: Strong oxidizers, acids, alkalis
Hazardous Decomposition Products: Silica, formaldehyde, carbon oxides, in case of fire or strong thermal breakdown
Conditions to Avoid: Extended exposure to heat, freezing, direct sunlight

11. Toxicological Information

Acute Toxicity: Not expected to be acutely toxic at normal exposure levels
Skin Contact: May cause mild reversible irritation
Eye Contact: May cause mild redness or irritation
Inhalation: Mist may cause respiratory tract irritation
Chronic Effects: No known significant effects or critical hazards
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, or OSHA
Sensitization: Not known to cause allergic responses

12. Ecological Information

Aquatic Toxicity: Not regarded as acutely hazardous, but large releases can harm aquatic life by coating gills or affecting oxygen transfer
Mobility in Soil: Low, forms film on water surfaces
Persistence and Degradability: Degrades slowly in the environment
Bioaccumulation Potential: Low due to high molecular weight
Waste Water Impact: Release to sewage should be minimized, silicone can foul treatment systems if present at high concentrations

13. Disposal Considerations

Waste Disposal Methods: Collect and dispose as non-hazardous industrial waste in accordance with local regulations
Contaminated Packaging: Rinse containers before recycling or disposal, follow local laws
Precautions: Do not allow product to reach groundwater, water bodies, drainage systems

14. Transport Information

UN Number: Not regulated for transport
Proper Shipping Name: Non-hazardous material
Transport Hazard Class: Not applicable
Packing Group: Not regulated
Environmental Hazards: None identified
Special Precautions: Avoid packaging damage and follow safe handling protocols during loading or unloading

15. Regulatory Information

Regulated Status: Not a regulated hazardous material under US OSHA, EU REACH, or similar guidelines
Label Requirements: Safety phrases relating to skin and eye contact
National Inventory Listings: Silicone polymer and related materials listed on TSCA, EINECS, DSL, AICS, and other international inventories
Other Regulatory Considerations: Observe any site-specific rules on chemical handling, fire safety, or environmental release