Material Safety Data Sheet for 3,3'-Thiodipropionic Acid

Identification

Product Name: 3,3'-Thiodipropionic Acid
Chemical Formula: C6H10O4S
Synonyms: Thiodipropionic acid, TDP
CAS Number: 111-17-1
Recommended Use: Antioxidant additive, stabilizer for polymers
Manufacturer & Supplier Information: Supplier contact details available from the product distributor or direct manufacturer, including address, emergency phone numbers, and technical support lines
Emergency Overview: White crystalline powder with faint odor, not considered highly flammable, commonly handled in research and industrial settings

Hazard Identification

GHS Classification: Not classified as hazardous by OSHA or EU regulations for standard usage
Signal Word: None required
Hazard Statements: May cause mild skin and eye irritation, inhalation and ingestion of dust could result in discomfort to sensitive individuals
Precautionary Statements: Avoid contact with eyes, skin, and clothing; avoid inhalation of dust; wash thoroughly after handling
Pictograms: No pictograms required under GHS
Routes of Exposure: Inhalation, skin, eyes, ingestion
Potential Health Effects: Eye and skin irritation for individuals with heightened sensitivity, nuisance dust effects
Environmental Hazards: Not known to pose significant environmental risks, although bulk spills may require reporting per local guidelines

Composition / Information on Ingredients

Chemical Name: 3,3'-Thiodipropionic Acid
CAS Number: 111-17-1
Concentration: 98-100%
Impurities: Trace levels of byproducts associated with synthesis; not considered hazardous
Additives: None reported for laboratory-grade material

First Aid Measures

Inhalation: Move person to fresh air, monitor for signs of discomfort, seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing, wash affected area with soap and water, consult healthcare for prolonged redness or irritation
Eye Contact: Rinse with copious amounts of water for at least 15 minutes, ensure eyelids are held open, obtain medical advice if irritation continues
Ingestion: Rinse mouth thoroughly, do not induce vomiting, consult a physician, provide supportive care as directed by medical professionals
Most Important Symptoms: Redness, mild irritation to skin or eyes, cough or throat irritation from inhaled particles
Medical Attention: Symptomatic treatment recommended based on severity

Fire-Fighting Measures

Suitable Extinguishing Media: Water, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: High-pressure water streams, which may spread dust
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, sulfur oxides
Special Protective Equipment: Firefighters should use self-contained breathing apparatus, protective suits
Unusual Fire and Explosion Hazards: Dust buildup can create explosive hazard in confined spaces, although product not easily ignitable
Advice for Firefighters: Evacuate area, cool adjacent containers, prevent runoff from entering drains or sewers

Accidental Release Measures

Personal Precautions: Wear protective gloves, safety goggles, dust mask or respirator, avoid dust formation
Environmental Precautions: Prevent entry into surface water or sewage systems, contain spill with inert barriers
Methods for Cleanup: Sweep or vacuum material into receptacle, minimize dust and avoid dry sweeping, use compatible absorbent for wet spills, dispose according to section 13
Decontamination: Wash spill area with water after material removal
Reporting: Local regulations may require incident notification for substantial releases

Handling and Storage

Handling: Avoid breathing dust, use in well-ventilated areas, practice good personal hygiene after exposure, employ proper dust control
Storage: Store in cool, dry, well-ventilated place, keep container tightly closed, protect from excessive heat and direct sunlight, segregate from strong bases and oxidizing agents
Incompatible Materials: Strong oxidizers, strong bases
Precautions for Safe Handling: Minimize dust buildup, ground containers if handling large quantities to prevent static charge
Special Storage Conditions: Label containers clearly, check packaging integrity before use

Exposure Controls and Personal Protection

Exposure Limits: No occupational exposure limits established by OSHA, NIOSH, or ACGIH
Engineering Controls: Local exhaust ventilation, fume hood or dust extraction, use closed systems where feasible
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety goggles or face shield, lab coat or coveralls, dust mask or NIOSH-approved respirator for large-scale handling
Hygiene Measures: Wash hands thoroughly, remove contaminated clothing and wash before reuse, do not eat or drink in work area
Environmental Exposure Controls: Prevent release into environment by implementing containment protocols

Physical and Chemical Properties

Appearance: White crystalline powder
Odor: Faint, characteristic
Odor Threshold: Not established
pH: Slightly acidic (1% solution: pH 3.5-4.5)
Melting Point / Freezing Point: 132-135°C (270-275°F)
Boiling Point: Not applicable, decomposes before boiling
Flash Point: Not determined
Flammability: Not easily flammable
Vapor Pressure: Negligible at ambient conditions
Solubility: Slightly soluble in water, higher solubility in alcohols
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not established
Decomposition Temperature: > 200°C
Viscosity: Not applicable
Bulk Density: ca. 0.6-0.8 g/cm³

Stability and Reactivity

Stability: Stable under recommended storage and handling conditions
Reactivity: Non-reactive under normal environmental conditions
Chemical Stability: Does not polymerize spontaneously, sensitive to strong acids or bases
Conditions to Avoid: Excessive heat, exposure to open flames, incompatible substances
Incompatible Materials: Strong oxidizing agents, strong alkalies
Hazardous Decomposition Products: Sulfur oxides, carbon monoxide, carbon dioxide

Toxicological Information

Acute Toxicity: Low oral and dermal toxicity, no data suggesting significant hazard at normal levels of exposure
Skin Corrosion/Irritation: Classified as mild irritant in sensitive individuals or if exposure is prolonged
Eye Damage/Irritation: Possible mild, transient irritation
Respiratory Sensitization: No evidence available for respiratory sensitization
Skin Sensitization: Not a known skin sensitizer
Genotoxicity: No mutagenic effects reported
Carcinogenicity: Not listed by IARC, NTP, OSHA
Reproductive Toxicity: No reproductive or developmental toxicity data reported
Chronic Effects: No evidence of chronic toxicity or systemic effects from repeated low-level exposure

Ecological Information

Ecotoxicity: Not expected to cause acute effects at environmental concentrations for aquatic organisms, data limited
Persistence and Degradability: Expected to be biodegradable under typical environmental conditions
Bioaccumulative Potential: Low potential for bioaccumulation
Mobility in Soil: Expected to be moderately mobile based on water solubility, leaching unlikely
Other Adverse Effects: No known significant effects, bulk release should be contained to prevent unnecessary exposure

Disposal Considerations

Waste Treatment Methods: Consign for disposal as chemical waste, use licensed hazardous waste contractor
Product Disposal: Dispose in accordance with local, regional, national, and international regulations, avoid landfill or incineration where prohibited
Contaminated Packaging: Empty containers should be rinsed and disposed as chemical packaging waste
Precautions: Wear personal protective equipment during disposal, prevent material from entering water bodies

Transport Information

UN Number: Not regulated for transport by ADR/RID, IMDG, or IATA
Proper Shipping Name: Not classified as a dangerous good
Transport Hazard Class: Non-hazardous
Packing Group: Not applicable
Environmental Hazards: No specific transport-related environmental hazards identified
Special Precautions: Avoid damage to packaging, secure during transit to avoid accidental release, shipments must comply with carrier requirements

Regulatory Information

US TSCA: Listed
EU REACH: Registered/Pre-registered
Other Inventories: Included in Canadian DSL, Australian AICS, Japanese ENCS, South Korean KECI
SARA Title III: Not subject to reporting under Sections 302, 304, 311, 312, or 313
California Proposition 65: Not listed
Workplace Labelling: Follow local workplace and laboratory regulations