Product Name: Aminosulfonic Acid
Synonyms: Sulfamic Acid, Amidosulfonic Acid, Aminosulphonic Acid
Chemical Formula: H3NSO3
CAS Number: 5329-14-6
Molecular Weight: 97.09 g/mol
Recommended Use: Cleaning agent, descaler, pH regulator, herbicide intermediate
Supplier: Industrial chemical distributors, laboratory suppliers
Contact Details: Emergency phone numbers, address of manufacturer or distributor
GHS Classification: Eye Irritation Category 2A, Skin Irritation Category 2, Acute Toxicity (Oral) Category 4
Signal Word: Warning
Hazard Statements: Causes skin irritation; causes serious eye irritation; harmful if swallowed
Precautionary Statements: Avoid breathing dust, wash skin thoroughly, wear protective gloves and eye protection, do not eat or drink while handling
Pictograms: Exclamation mark
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Most Important Symptoms: Redness, pain, tearing, gastrointestinal irritation, coughing
Chemical Name: Aminosulfonic Acid
CAS Number: 5329-14-6
Concentration: 99–100%
Impurities: Typically low, trace levels of inorganic salts possible, always reference batch-level certificate of analysis for exact specifications
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, seek medical advice if irritation persists
Skin Contact: Wash with plenty of soap and water, remove contaminated clothing, seek medical assistance for persistent irritation
Inhalation: Move person to fresh air, support breathing as necessary, consult medical personnel if respiratory symptoms develop
Ingestion: Rinse mouth thoroughly, never induce vomiting unless instructed by a poison center, obtain immediate medical attention
Medical Attention: Symptomatic treatment, monitor for delayed effects
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, foam, water spray (use what is appropriate for surrounding fire)
Unsuitable Extinguishing Media: Direct stream of water may spread chemical dust
Specific Hazards: Releases toxic fumes including sulfur oxides and nitrogen oxides during combustion
Protective Equipment: Firefighters use self-contained breathing apparatus and full protective gear
Special Procedures: Move containers from fire area if safe to do so, cool with water spray
Explosion Hazards: Dust can present explosion risk if mixed with air
Personal Precautions: Keep unprotected persons away, ventilate area, use personal protective equipment including dust mask, eye protection, gloves
Environmental Precautions: Prevent product from entering drains, watercourses, or soil
Methods for Clean-Up: Sweep up without generating dust, collect in appropriate containers for disposal, wash spill area with plenty of water, avoid dry sweeping which increases airborne dust
Decontamination: Rinse small spills with water, larger spills require professional cleanup
Handling: Avoid breathing dust, minimize dust formation, use only outdoors or in well-ventilated areas, wear proper personal protective equipment, wash hands before eating or drinking
Storage: Store away from incompatible materials (strong bases, oxidizing agents, nitrates, chlorates), keep containers tightly closed, store in cool, dry, well-ventilated area, avoid moisture contact which causes caking or slow decomposition
Avoid: Storing near food or feed, exposure to acids or alkalis
Exposure Limits: No specific occupational exposure limit established, use industry-standard dust limits (e.g., OSHA PEL for particulates not otherwise regulated: 15 mg/m³ total dust, 5 mg/m³ respirable fraction)
Engineering Controls: Use local exhaust or general ventilation to maintain airborne concentrations below recommended limits
Eye Protection: Chemical splash goggles or safety glasses with side shields
Skin Protection: Chemical resistant gloves (e.g., nitrile, neoprene), long-sleeved clothing
Respiratory Protection: Dust mask (e.g., N95 particulate filter) if dust generation is likely
Hygiene: Do not eat, drink, or smoke while handling, wash hands and face after use
Appearance: White crystalline solid
Odor: Odorless
pH (1% solution): Approximately 1.2
Melting Point: 205°C (decomposes)
Boiling Point: Decomposes before boiling
Solubility: Soluble in water (approximately 213 g/L at 20°C)
Density: 2.126 g/cm3 (at 20°C)
Partition Coefficient: Not applicable (ionic in water)
Vapor Pressure: Negligible at ambient temperatures
Evaporation Rate: Not applicable
Flash Point: Not flammable
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Moisture, high temperatures, incompatible substances
Incompatible Materials: Strong bases, oxidizers, nitrites, chlorates, sodium nitrite
Hazardous Decomposition Products: Sulfur oxides (SOx), nitrogen oxides (NOx), ammonia, toxic gases under fire conditions
Polymerization: Does not occur
Acute Toxicity (Oral): LD50 (rat) 1450 mg/kg
Acute Toxicity (Dermal): Not expected to be harmful by skin contact
Inhalation: Can cause respiratory tract irritation if inhaled as dust
Skin Corrosion/Irritation: Causes irritation; prolonged contact may produce burns
Eye Damage/Irritation: Causes serious eye irritation, risk of corneal injury
Sensitization: Not classified as skin or respiratory sensitizer
Chronic/Long-term Effects: Not classified
Carcinogenicity, Mutagenicity, Reproductive Hazard: Not listed by IARC, NTP or OSHA as a carcinogen
Target Organs: Eyes, skin, respiratory and gastrointestinal tract
Environmental Fate: Readily dissolves in water, does not bioaccumulate
Aquatic Toxicity: LC50 (fish, 96h): 70.3 mg/L (Pimephales promelas), EC50 (daphnia, 48h): 48.9 mg/L, EC50 (algae, 72h): 86 mg/L
Persistence and Degradability: Expected to degrade through microbial activity and natural hydrolysis
Mobility in Soil: High, due to water solubility, but low potential for bioaccumulation
Other Adverse Effects: May lower aquatic pH in large spills, monitor and control local concentrations to protect water life
Disposal Methods: Dispose of contents and container through licensed chemical waste contractor
Contaminated Packaging: Rinse well before recycling or disposal, follow local regulations
Special Precautions: Do not discharge to sewers or environment, keep away from incompatible materials during disposal operations
Regulatory Requirements: Adhere to federal, state, and local disposal laws and guidelines for hazardous chemicals
UN Number: 2967
UN Proper Shipping Name: Sulfamic Acid
Transport Hazard Class: 8 (Corrosive)
Packing Group: III
Label: Corrosive (Class 8)
Environmental Hazards: Not classified as a marine pollutant
Special Transport Precautions: Secure loads, avoid moisture exposure during transit, keep away from food and feedstuffs
TSCA Status: Listed in US Toxic Substances Control Act Inventory
REACH Status: Fully registered in EU under REACH Regulation
SARA Title III: Not listed under extremely hazardous substances
OSHA: Classified as hazardous, requires hazard communication
WHMIS/CAS: Classified D2B in Canada
Labeling Requirements: Hazard labels include eye, skin, and acute toxicity warnings, with proper pictograms per local and international regulations
International Inventories: Listed in Australia (AICS), Canada (DSL), Japan (ENCS), China (IECSC), and others
Restrictions: Consult local, regional, and national regulations before use or distribution
