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Product Name: TES Hemisodium
Chemical Name: N-Tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid, hemisodium salt
Synonyms: TES sodium salt half-neutralized
CAS Number: 125712-70-5
Manufacturer: Refer to supplier label for details
Emergency Contact: Refer to local guidelines or supplier emergency lines
Recommended Use: Laboratory reagent, buffer solution component for biochemical and molecular biology applications
Classification: Non-hazardous by GHS standards for laboratory use, yet eye and skin irritation could occur with prolonged contact
Label Elements: Signal Word: None required based on current hazard data
Pictogram: None mandated
Hazard Statements: May cause mild irritation to skin, eyes, and respiratory tract on direct contact
Precautionary Statements: Avoid inhalation, ingestion, and contact with skin or eyes
Chemical Formula: C6H14NO6SNa
Concentration: ≥98% TES Hemisodium
Impurities: Less than 2% traces of other sodium salts and water
Ingredient Name: TES Hemisodium
CAS: 125712-70-5
EC Number: Not assigned
Eye Contact: Rinse eyes gently under running water for at least fifteen minutes, making sure eyelids are lifted
Skin Contact: Remove contaminated clothing, flush affected skin with plenty of water using a mild soap if available
Inhalation: Move the person to fresh air, keep them at rest, seek medical attention if symptoms develop or persist
Ingestion: Rinse mouth thoroughly with water, do not induce vomiting, seek advice from a medical professional
Advice for Physicians: Treat symptomatically based on clinical judgment; no specific antidote is known
Suitable Extinguishing Agents: Use extinguishers rated for chemical fires such as water spray, dry chemical, CO2, or foam
Unusual Fire Hazards: Material may emit hazardous fumes of carbon oxides and sulfur oxides at elevated temperatures
Protective Equipment for Firefighters: Self-contained breathing apparatus and full protective suit required during fire situations
Thermal Decomposition: Produces sodium oxides, carbon monoxide, carbon dioxide, and sulfur oxides under intense heat
Personal Precautions: Use gloves, protective goggles, and a laboratory coat
Spill Response: Clean up spill promptly, avoid dust formation, sweep up, and place into a suitable waste disposal container
Environmental Precautions: Prevent runoff or spillage into drains and waterways
Clean-Up Methods: Remove residues with water; ventilate well to clear any dust generated
Handling: Handle in a well-ventilated area, minimize exposure to dust, and avoid ingestion or inhalation
Hygiene: Wash hands after use, remove protective gear before leaving work area
Storage Conditions: Store in tightly closed containers, avoid moisture and direct sunlight, keep in cool, dry place
Incompatible Materials: Strong oxidizing agents and acids
Storage Temperature: Recommended storage between 15-30°C
Engineering Controls: Use local exhaust ventilation to prevent airborne exposure
Respiratory Protection: NIOSH/MSHA approved dust mask when dust formation is likely
Eye Protection: Safety glasses with side shields
Skin Protection: Nitrile or neoprene gloves; laboratory coat
Other Protection: Eyewash station and safety shower in vicinity of use
Exposure Limits: No established occupational exposure limits
Appearance: White to off-white crystalline powder
Odor: Odorless
pH (1% solution): 6.9-7.5
Melting Point: Decomposes before melting
Boiling Point: Not applicable
Solubility: Readily soluble in water
Vapor Pressure: Not determined
Specific Gravity: ~1.5 at 20°C
Flash Point: Not flammable
Autoignition Temperature: Not applicable
Partition Coefficient (log Kow): Not determined
Chemical Stability: Stable under recommended conditions of storage and handling
Reactivity Hazards: Non-reactive with most common reagents
Hazardous Decomposition Products: Sodium oxides, carbon oxides, sulfur oxides may form at high temperatures
Polymerization: Will not occur
Conditions to Avoid: Strong heat, exposure to incompatible chemicals
Likely Routes of Exposure: Inhalation, skin, and eye contact, or ingestion
Acute Toxicity: Data limited, but low oral and dermal toxicity observed in comparable substances
Chronic Effects: No known chronic health effects, but prolonged exposure may lead to irritation
Carcinogenicity: Not classified as a carcinogen by IARC, ACGIH, NTP, or OSHA
Mutagenicity: No mutagenic effects reported in available data
Reproductive Toxicity: No known reproductive hazards in current literature
Symptoms of Overexposure: Irritation of skin, eyes, throat, or stomach distress if swallowed
Ecotoxicity: No documented impact at laboratory-scale release levels, not expected to bioaccumulate
Persistence/Degradability: Expected to degrade under normal environmental conditions
Bioaccumulation Potential: Low, based on molecular properties
Mobility in Soil: High mobility, dissolves freely in water
Other Adverse Effects: Excessive use in industrial settings not recommended due to sodium load on aquatic environments
Waste Treatment Methods: Dispose of contents and containers according to local, regional, national, and international regulations
Recommended Waste Disposal: Chemical waste collection for incineration or landfill at approved facility
Contaminated Packaging: Rinse thoroughly, offer for recycling or proper disposal
Special Precautions: Avoid discharge into sewers or waterways
UN Number: Not classified as hazardous for transportation
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not assigned
Packing Group: Not required
Marine Pollutant: No
Special Precautions for User: Protect against physical damage in transit
U.S. TSCA: Listed
EC Inventory: Not listed
Canada DSL/NDSL: Not listed
SARA Title III: Not subject
California Proposition 65: Not listed
Other Country Regulations: Refer to national and regional chemical safety authorities
Labeling Requirements: Laboratory chemical, for professional use only, observe best handling practices
