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Product: Antifoam B Emulsion
Type: Liquid chemical, silicon-based antifoam agent
Main Application: Used in various industries for controlling foam in water-based processes, notably in food manufacturing, pharmaceuticals, and wastewater treatment
Core Ingredient: Polydimethylsiloxane blended in an aqueous emulsion with silica and emulsifiers
Appearance: Milky white to translucent liquid, slightly viscous
Odor: Mild, almost non-existent
Reason for Use: Breaks down surface bubbles, making processes safer and more manageable, especially when foaming can disrupt production or mask hazardous leaks
Classification: Not classified as hazardous under GHS standards, though minor irritation can occur
Health Risk: Direct contact with eyes may trigger discomfort, redness, or watering; on skin, repeated exposure might dry or crack exposed areas due to mild defatting from emulsifiers
Fire/Explosion Risk: Not flammable, but can create slippery surfaces and contribute to slip-and-fall hazards
Environmental Impact: High doses can disrupt wastewater treatment biological processes, making disposal in large volumes unsafe for standard sewer systems
Symptoms of Overexposure: Occasional headaches or respiratory irritation when atomized droplets or mist form in unventilated spaces
Key Component: Polydimethylsiloxane (10–30 percent by weight)
Minor Components: Silica (less than 5 percent), emulsifiers and stabilizers (exact formulations proprietary, typically nonionic surfactants)
Water Content: 60–80 percent
Additives: Preservatives to extend shelf life, usually at trace levels
Allergens: Common allergens are not present, although certain emulsifiers may cause reactions in sensitive individuals
Eye Contact: Rinse eyes immediately with clean water for fifteen minutes, hold eyelids open, seek medical attention for persistent discomfort
Skin Exposure: Wash thoroughly with soap and water, apply a moisturizer if irritation develops
Inhalation: Move to fresh air if mist inhalation causes coughing or throat irritation; consult medical help if symptoms persist
Ingestion: Rinse mouth, avoid swallowing further, seek medical advice if significant quantities are consumed or symptoms develop
General Care: Always remove contaminated clothing and wash before reuse to avoid ongoing irritation or transfer to other areas of the body
Flashpoint: Not applicable due to high water content
Suitable Extinguishers: Water spray, dry powder, foam
Products of Combustion: Produces carbon oxides, silicon oxides, and formaldehyde at temperatures above 150°C
Protective Measures: Firefighters should use self-contained breathing apparatus owing to the risk of toxic fumes if water evaporates and the residue decomposes
Additional Hazards: Spilled material can create slick surfaces, increasing the risk of falls for first responders
Containment: Block the spread with sand, soil, or absorbent material to stop drains from becoming contaminated
Cleanup: Soak up with absorbent, shovel into disposal container, wash spill area with water and a mild detergent to eliminate residue
Personal Precautions: Non-slip footwear and chemical-resistant gloves recommend if cleaning larger spills; ventilate area to avoid buildup of any vapor or mist
Environmental Impact: Avoid direct discharge to surface water or storm drains — process through proper wastewater facilities whenever possible
Long-Term Risk: Significant spills can interfere with microbial life in treatment plants, leading to unexpected costs and failures in effluent treatment
Handling: Use only with adequate ventilation; close containers after use to prevent accidental spillage or contamination
Hygiene: Wash thoroughly after handling, especially before eating or smoking, avoid repeated contact with skin
Storage Condition: Store in cool, dry place out of direct sunlight, keep above freezing and below 40°C
Container: Keep in original packaging, reseal tightly
Incompatibilities: Avoid strong oxidizers; stable under normal storage conditions, but freezing can destabilize the emulsion, leading to separation and reduced effectiveness
Engineering Controls: Local exhaust at points of heavy use, ensure general area ventilation to keep airborne mist below detectable levels
Personal Protective Equipment: Nitrile or latex gloves, safety glasses with side shields, lab coat or apron for splash protection
Respiratory Protection: Not required under ordinary use, unless sprayed or during cleanup of large spills; use dust/mist mask if risk of inhalation exists
Work Practices: Avoid eating, drinking, or smoking during handling, launder contaminated clothing before reuse
Monitoring: No occupational exposure limits established, but prudent to limit repeated or prolonged skin exposure
Appearance: Milky, slightly viscous liquid
Odor: Neutral or faintly soapy
pH Range: 6.0–8.0
Boiling Point: Close to water, typically above 100°C
Vapor Pressure: Very low, unlikely to pose inhalation hazard under ambient conditions
Solubility: Dispersible in water, not truly soluble
Density: Ranges between 0.98 and 1.02 g/cm³
Stability: Emulsion stable at room temperature
Other Properties: Freezing breaks the emulsion, producing an unusable curdled mixture
Stability: Remains stable for at least one year in sealed containers at room temperature
Hazardous Reactions: Rare except with strong acids, bases, or oxidizing chemicals
Decomposition: Heating above 150°C creates risk of formaldehyde and silicon oxide gas formation
Polymerization: Does not occur
Material Incompatibilities: Reacts slowly with strong oxidants, loses antifoaming ability if mixed with cationic surfactants
Acute Toxicity: Swallowing small amounts unlikely to cause harm; higher doses may lead to stomach upset or mild nausea
Skin Contact: Mildly irritating only for individuals with sensitive skin, rarely triggers allergic reaction
Eye Exposure: Causes stinging and redness, not expected to cause permanent damage
Inhalation: Prolonged exposure to mist can irritate airways, though real-life cases are rare unless in confined spaces
Chronic Effects: Long-term problems are not typical; repeated exposure may dry skin
Persistence: Polydimethylsiloxane resists degradation in natural environments, leading to accumulation in soils or sediments
Biodegradability: Breaks down slowly, which can lead to long-term buildup near discharge points
Aquatic Toxicity: Not acutely toxic to fish or aquatic organisms, but high concentrations physically smother gills and limit oxygen transfer
Mobility: Tends to stick to soils and organic matter, minimizing groundwater impact
Practical Concerns: Slow breakdown means disposal should be controlled, not simply washed down the drain in large amounts
Preferred Method: Send to a licensed disposal contractor, never pour large volumes into public sewers
Small Amounts: May be diluted and flushed with large amounts of water — only with approval from local authorities
Container Disposal: Rinse thoroughly before recycling or disposal; incineration preferred for bulk waste if practical
Legal Concerns: Keep waste manifests and comply with local hazardous waste regulations; failure to do so brings fines and long-term regulatory headaches
Impact of Improper Disposal: Clogs treatment plants, increases costs, possible legal issues for businesses and municipalities
UN Number: Not regulated as hazardous for ground, air, or sea transport
Packing: Use leak-proof containers, secure tightly, label as non-hazardous material
General Risk: Spillage makes floors dangerously slippery; extra care with pallets and loading
In-Transit Stability: Stable in ambient temperatures
Legal Requirements: Fulfill basic labeling and documentation rules for non-hazardous mixtures; watch for national deviations in transport laws
GHS: Not classified as hazardous in most jurisdictions
REACH and TSCA Compliance: Primary ingredients registered, covered by most major chemical safety regulations
Worker Safety: Subject to standard workplace chemical safety rules
Environment: Discharge rules vary by region, always check local requirements before large-scale disposal
Food Use: Only approved grades can be used where in contact with food, frequent audits ensure compliance in those settings
