Product Name: Hindered Amine Light Stabilizer (HALS)
Chemical Type: Polymeric or low molecular weight hindered amine
Chemical Formula: Proprietary mixtures commonly composed of C, H, N, O
CAS Number: Varies depending on specific HALS grade; common numbers include 70624-18-9 and 65447-77-0
Recommended Use: Light stabilizer for plastics, coatings, adhesives
Manufacturer Contact: Emergency phone numbers provided by manufacturer, technical support lines available on product literature
Address: Typically listed as headquarters or local distribution facility for traceability
Synonyms: Hindered Amine Light Stabilizer, Polymer Light Stabilizer, HALS Agent
Classification: Not classified as hazardous under GHS for many HALS products, but variations can exist
Physical Hazards: May produce dust if handled in powder form, combustible under certain conditions
Health Hazards: Inhalation of dust may cause respiratory irritation, skin or eye contact can lead to mild irritation, ingestion can cause gastrointestinal disturbance
Environmental Hazards: Limited water solubility, possible risk to aquatic environments with long-term exposure
Signal Word: Generally none required, but “Warning” may appear for some grades
Pictograms: No mandatory pictograms in most cases, specific formulations may require “exclamation mark” symbol
Precautionary Statements: Avoid inhaling dust, use protective gloves and goggles, wash hands thoroughly after use
Chemical Identity: Blend of hindered amine compounds
Typical Ingredients: Poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]hexamethyleneimine] or derivatives
Impurities: Minor amounts of related amines, processing aids
Concentration: Often over 90% active ingredient, remainder additives or inert carriers
Other Ingredients: May contain dispersing agents or synergistic additives depending on product version
Inhalation: Move person to fresh air; provide oxygen if breathing becomes difficult; seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water and mild soap; seek medical advice for persistent irritation
Eye Contact: Rinse eyes cautiously under gentle water stream for several minutes, remove contact lenses, continue rinsing and get medical help if discomfort continues
Ingestion: Rinse mouth with water, do not induce vomiting, consult a physician; information on delayed effects not always available so professional attention required
Note to Physician: Offer symptomatic treatment and supportive care, no specific antidote listed in standard literature
Suitable Extinguishing Media: Use dry chemical, foam, carbon dioxide, or water spray to control fire
Unsuitable Media: Strong water jets can spread powder if in dry form
Specific Hazards Arising from Product: Combustion may release toxic fumes including nitrogen oxides, carbon monoxide, carbon dioxide
Special Protective Equipment for Firefighters: Self-contained breathing apparatus and protective clothing prevent exposure to gases and particulates
Firefighting Instructions: Approach from upwind, contain contaminated run-off to prevent environmental contamination, remove undamaged containers from area if safe
Personal Precautions: Wear dust mask or respirator, chemical-resistant gloves, and goggles or face shield; avoid generating dust
Environmental Precautions: Prevent product from entering drains, water courses, or soil, contain larger spills with inert absorbent
Methods for Cleaning Up: Collect with compatible vacuum or by sweeping, store in labeled, sealed container for disposal, ventilate area thoroughly
Reference to Other Sections: Use recommendations in Exposure Controls and Personal Protection section for spill responders
Handling: Use local exhaust ventilation in processing areas, maintain good industrial hygiene by minimizing dust; avoid contact with skin, eyes, and clothing
Storage Conditions: Store in cool, dry, well-ventilated area, away from direct sunlight and moisture, avoid temperature extremes
Incompatible Materials: Oxidizers, strong acids, or strong bases, which can degrade product or aggravate hazards
Safe Packaging: Use sealed original drums or resealable HDPE or fiber containers to limit dust and moisture ingress
Storage Stability: Stable under recommended conditions though some HALS grades can yellow or degrade if exposed to strong sunlight for extended periods
Engineering Controls: Local or general exhaust ventilation recommended, dust collection equipment may help in industrial settings
Exposure Limits: No specific occupational exposure limits for HALS, but aim to keep airborne dust below nuisance dust limits (e.g., OSHA PEL for particulate not otherwise regulated)
Personal Protective Equipment: Use chemical-resistant gloves (nitrile, neoprene), safety goggles, protective work clothing; NIOSH-approved respirators for dusty operations
Hygiene Measures: Wash hands before eating or smoking, launder work clothes regularly, maintain clean work areas
Environmental Controls: Implement containment and secondary barriers to limit release to environment in processing or blending operations
Appearance: White to yellowish powder or granules, odorless or mild amine scent
Solubility: Low in water, soluble in some organic solvents such as toluene or xylene
Melting Point: Varies by grade; typically between 80°C and 180°C
Boiling Point: Decomposes before boiling
Vapor Pressure: Negligible at ambient temperature
Density: ~1.05 to 1.20 g/cm³ depending on grade
Flash Point: >200°C (typically stable under most storage conditions)
Partition Coefficient (log Kow): Expected to have moderate to high value indicating potential for bioaccumulation
Decomposition Temperature: Begins to degrade at elevated temperatures, releasing basic amine compounds
Chemical Stability: Stable under normal conditions of use and storage, light and heat can accelerate decomposition
Reactivity: Unlikely to react with most common materials under recommended use
Hazardous Reactions: Strong acids, oxidizers, or alkalis can promote breakdown and formation of harmful vapors
Hazardous Decomposition Products: Possible release of carbon oxides, nitrogen oxides, and other organic vapors when burned or decomposed
Conditions to Avoid: Direct sunlight, sources of ignition, strong oxidizing environments
Polymerization: Not known to occur
Acute Toxicity: Low acute toxicity by oral, dermal, or inhalation routes; specific LD50 values generally above 2000 mg/kg in animal studies
Skin Irritation: May cause mild to moderate irritation in some users, dermatitis possible in sensitive individuals
Eye Irritation: Dust or particles can trigger irritation, reddening, or discomfort
Respiratory Effects: Dust may aggravate asthma or other chronic respiratory conditions
Sensitization: Rare cases of skin sensitization noted in patch testing
Chronic Toxicity: No definitive links to chronic disease; no evidence of carcinogenicity based on available studies
Additional Data: Prolonged exposure to dust may cause minor lung changes, recommend minimizing exposure as good practice
Ecotoxicity: Limited acute toxicity to aquatic species, but persistent; LC50 values generally above 10 mg/L (low acute hazard), chronic exposure and accumulation possible
Persistence and Degradability: Substance is not rapidly biodegradable, some grades resist breakdown in soil and water
Bioaccumulation Potential: Compounds may bioaccumulate in aquatic organisms due to high log Kow
Mobility in Soil: Tends to adsorb to soil particles, limiting runoff but may persist locally
Environmental Fate: Risk of long-term environmental effects if released in large quantities, recommend treatment before disposal
Other Adverse Effects: Use in accordance with local regulations minimizes risk to wildlife and waterways
Waste Treatment Methods: Dispose of product and contaminated packaging as non-hazardous industrial waste, unless local law classifies otherwise
Methods of Disposal: Landfill or incineration at licensed facility, avoid release to drains or surface water
Contaminated Packaging: Clean before recycling or disposal, adhere to all local, state, and national regulations
Recommendation: Refer to waste management authority for satisfactory guidance; do not reuse empty containers for food, drinks, or other chemicals
EPA Hazardous Waste Code: Not typically classified, but check with regional requirements
UN Number: Not regulated for transport in most jurisdictions
Proper Shipping Name: Hindered amine light stabilizer or light stabilizer compound
Transport Hazard Class: Not classified as dangerous
Packing Group: Not applicable
Marine Pollutant: Not designated as marine pollutant
Special Precautions for User: Prevent package rupture, keep containers tightly closed, store securely during transit
Regulatory Status: Not subject to international transport restrictions for land, water, or air
EU Classification: Not a hazardous substance under CLP (Regulation (EC) No 1272/2008) for most HALS forms
US Regulatory Status: Not listed on SARA Title III Section 313, not on CERCLA hazardous list; TSCA inventory status usually confirmed
Canadian WHMIS: Not controlled under WHMIS for most grades, but safety data required for workplace use
Other Regulations: Not subject to major international restrictions; restricted uses possible for specialty applications under certain REACH annotations
Labeling: Basic identification and precautionary information on packaging, consult local regulations for further requirements
International Standards: Always check compliance with local, state, federal, and international safety, environmental, and packaging regulations before import or export
