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Product Name: Antifoam 204
Manufacturer: Momentive Performance Materials
Recommended Uses: Industrial antifoam applications in water treatment, coatings, pulp and paper, and other manufacturing processes
SDS Number: AF204-001
Emergency Contact: CHEMTREC 1-800-424-9300 (US), 1-703-527-3887 (international)
Supplier Address: 260 Hudson River Road, Waterford, NY 12188, USA
GHS Classification: Not classified as hazardous under current GHS regulations for typical use
Main Hazards: May cause mild irritation to skin or eyes upon direct contact; inhalation of spray mist may cause mild respiratory discomfort
Signal Word: None
Hazard Statement: May cause mild, reversible irritation; no chronic toxic risks documented under normal handling
Pictograms: None required
Precautionary Statements: Avoid eye and prolonged skin contact; use with adequate ventilation; do not ingest or inhale mist
Polydimethylsiloxane: 60-65% CAS No. 63148-62-9
Silica, amorphous: 10-15% CAS No. 67762-90-7
Nonionic surfactants: 10-15% (proprietary blend)
Water: 10-15%
Other components: Non-hazardous stabilizers present in trace amounts
Eye Contact: Rinse eyes gently for fifteen minutes with plenty of room-temperature water, keeping eyelids open; take out contact lenses if present and easy to do; seek medical advice if irritation persists
Skin Contact: Remove contaminated clothing; wash skin with soap and water; seek medical help if any symptoms continue
Inhalation: Move person to fresh air; keep comfortable for breathing; seek advice from poison control or a healthcare provider if symptoms develop
Ingestion: Rinse mouth thoroughly with water; do not induce vomiting; seek medical attention if a considerable amount is swallowed or discomfort persists
Suitable Extinguishing Media: Water spray, dry powder, carbon dioxide (CO2), or foam
Specific Hazards: Product is not flammable; decomposition under intense heat may generate trace levels of carbon oxides and silicon oxides
Special Protective Equipment: Firefighters use standard protective gear and self-contained breathing apparatus
Advice for Firefighters: Cool containers exposed to heat with water spray to prevent rupture; avoid inhaling combustion gases
Precautions: Ventilate the spill area well; restrict unnecessary personnel from entering
Spill Response: Contain spill using sand or earth; use absorbent pads or inert material to collect larger volumes; place in containers for disposal
Personal Protection: Wear protective gloves, goggles, and cover exposed skin; avoid breathing vapors
Environmental Precautions: Block entry into drains and sewers; clean-up residues thoroughly
Handling: Avoid contact with eyes and skin; do not inhale spray or mist; wash hands after working; use only with proper ventilation
Storage: Store in a cool, dry area away from heat and direct sunlight; keep container tightly closed; store away from food, beverages, and incompatible chemicals like strong acids
Incompatible Materials: Strong oxidizing agents, acids
Hygiene Measures: Follow routine hygiene practices; do not eat, drink, or smoke during use
Occupational Exposure Limits: No established limits for Antifoam 204 ingredients under OSHA, ACGIH, or NIOSH; for amorphous silica, limit exposure below 10 mg/m³ (inhalable)
Engineering Controls: Provide local exhaust or general room ventilation to control airborne mists
Personal Protective Equipment: Wear chemical-resistant gloves (such as nitrile), safety goggles, long-sleeved clothing, and respiratory protection if ventilation is insufficient
Environmental Controls: Prevent spillage or leaks from escaping into drains and waterways
Appearance: White, milky liquid
Odor: Slight, characteristic odor
pH: 7-8
Melting Point/Freezing Point: Below 0°C (freezing)
Boiling Point: Approx. 100°C (water-dependent)
Flash Point: Not applicable
Evaporation Rate: Similar to water
Solubility in Water: Dispersible
Vapor Density: Not relevant
Specific Gravity: 1.0 (water = 1)
Viscosity: Medium (thickened liquid texture)
Auto-ignition Temperature: Not self-igniting
Chemical Stability: Stable under normal usage and recommended storage conditions
Hazardous Reactions: No dangerous reactions during proper storage and handling
Conditions to Avoid: Excessive heat, open flames, frost, contact with incompatible materials
Incompatible Materials: Strong acids, strong oxidizers
Decomposition Products: High heat may create carbon monoxide, carbon dioxide, silicon dioxide vapors
Acute Toxicity: Based on ingredient data, low oral and dermal toxicity; large quantities may cause mild gastrointestinal upset
Skin Corrosion/Irritation: Not classified as corrosive; may cause temporary irritation on sensitive skin
Eye Effects: Mild, short-term irritation possible
Respiratory Effects: Prolonged inhalation of mist may cause coughing or slight discomfort
Chronic Effects: No significant risk of cancer or reproductive harm indicated by current studies
Sensitization: Not expected to cause allergic reactions
Ecotoxicity: Product contains low toxicity for aquatic life at typical concentrations; large direct releases to water may cause physical effects (film blocking oxygen transfer)
Persistence and Degradability: Primary silicone components do not biodegrade rapidly;
Bioaccumulative Potential: Low; main ingredients unlikely to accumulate in organisms
Mobility in Soil: Moderate mobility due to water dispersibility; main risks involve direct accidental spills
Other Adverse Effects: Prevent entry into water systems, soil, or vegetation
Waste Handling: Treat as non-hazardous industrial waste under most regulations; verify according to local and national waste requirements
Contaminated Packaging: Rinse thoroughly; recycle or dispose of in accordance with approved waste handlers
Incineration: Materials may be incinerated under controlled conditions by licensed facilities
Special Disposal Recommendations: Do not pour product or solution into water sources, storm drains, or soil
UN Number: Not regulated for transport
Proper Shipping Name: Not dangerous goods
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Not specifically regulated as environmentally hazardous
Special Precautions: Secure containers upright; avoid dropping or rough handling to prevent leaks
TSCA Status (US): Components listed or exempt
REACH Status (EU): Ingredients pre-registered or compliant
OSHA HCS (US): Not considered hazardous
SARA 313 (US): Product does not contain reportable substances
Canadian WHMIS: Not controlled
Other Regulations: Antifoam 204 ingredients comply with major workplace and environmental safety standards established by authorities in the US, EU, and Asia-Pacific
Label Requirements: Standard workplace labels recommended (product name, chemical nature, basic safety advice)
