Product Name: Organic Dye Intermediate 2Bsa (Obsa)
Chemical Formula: C12H10N2O3S
Synonyms: 2-Benzene Sulfonic Acid, OBSA
Recommended Use: For use in production of dyes and pigments
Manufacturer: Confidential
Emergency Contact: Local Poison Control Center or Manufacturer's Emergency Response Number
CAS Number: 123456-78-9
UN Number: UN3077
REACH Registration Number: 05-2119870342-52-0000
Email for MSDS Requests: msds@manufacturer.com
GHS Classification: Acute Toxicity Category 4 (Oral), Skin Irritation Category 2, Eye Irritation Category 2A
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin irritation; causes serious eye irritation
Pictograms: Exclamation Mark
Routes of Exposure: Inhalation, ingestion, skin contact, eye contact
Potential Health Effects: Prolonged exposure causes liver and kidney damage, respiratory tract irritation, nausea, vomiting, headaches, skin rashes
Environmental Hazards: Harmful to aquatic life with long-lasting effects
Chemical Name: Benzene-2-sulfonic acid derivative
PURITY: 97% minimum
Impurities: Sodium chloride < 1%, Moisture < 1.5%, Trace heavy metals (lead, chromium) < 0.01%
Hazardous Components: Organic benzene derivatives, sulfonic acid group compounds
Concentration Range: Main component 96–99%, impurities up to 3%
Inhalation: Move person to fresh air, provide oxygen if breathing is difficult, seek medical attention if symptoms persist
Ingestion: Rinse mouth, do not induce vomiting unless directed by medical personnel, drink one or two glasses of water, contact poison control immediately
Skin Contact: Remove contaminated clothing, wash affected area with soap and water for at least 20 minutes, get medical attention for irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, continue rinsing, consult a doctor
Notes for Doctor: Treat symptomatically, monitor for allergic reactions and systemic effects
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, water spray, foam
Specific Hazards: Evolution of toxic gases such as nitrogen oxides, sulfur oxides, and carbon monoxide during combustion
Protective Equipment for Firefighters: Self-contained breathing apparatus, protective clothing
Special Procedures: Avoid release of fire runoff into sewers, use water spray to cool unopened containers exposed to fire
Combustion Products: Sulfur oxides, organic fumes, nitrogen compounds
Sensitivity to Impact/Static: Not sensitive
Personal Precautions: Use personal protective equipment including gloves, goggles, and dust mask, avoid inhalation and contact with skin and eyes
Environmental Precautions: Prevent further leakage or spillage, do not let product enter drains, inform relevant authorities
Methods for Cleanup: Sweep up and shovel product, place into suitable containers for disposal, wash spill area with detergent and water, ventilate area
Large Spill: Dike area, collect spillage, use inert absorbent material
Protective Measures: Restrict access to spill area till cleanup complete
Handling: Avoid exposure to dust, handle in well-ventilated space, wear appropriate personal protection, prevent dust formation, keep containers tightly closed
Storage: Store in a cool, dry, well-ventilated room, away from incompatible substances such as oxidizing agents and acids, store in original container, keep away from food and drink
Special Precautions: Ground and bond containers when transferring, do not reuse empty containers
Incompatible Materials: Strong oxidizers, reducing agents, acids
Engineering Controls: Local exhaust ventilation, eyewash stations, safety showers
Exposure Limits: No official occupational exposure limit assigned, recommend keeping airborne concentrations below 1 mg/m³
Respiratory Protection: NIOSH-approved dust mask or respirator
Skin Protection: Chemical-resistant gloves, lab coat, rubber boots
Eye Protection: Safety goggles with side shields
Hygiene Measures: Wash hands thoroughly after handling, remove contaminated clothing
Environmental Controls: Avoid release into the environment, provide secondary containment where necessary
Physical State: Solid
Appearance: Light yellow powder or crystalline solid
Odor: Slight, characteristic aromatic odor
pH (1% solution): 2.5–4.5
Melting Point: 145–150°C
Boiling Point: Decomposes before boiling
Solubility: Soluble in water and alcohol
Vapor Pressure: Not applicable (solid)
Relative Density: 1.39 g/cm³
Flash point: Above 200°C
Partition coefficient (n-octanol/water): Not determined
Evaporation Rate: Not applicable
Stability: Stable under recommended storage conditions
Conditions to Avoid: Excessive heat, sources of ignition, direct sunlight, moisture, incompatible chemicals
Incompatible Materials: Strong oxidizers, reducing agents, strong acids
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides, sulfur oxides
Polymerization: Will not occur
Chemical Reactivity: Moderate; reacts with acids and strong oxidizers
Acute Toxicity: Oral LD50 (rat) ~500 mg/kg
Skin Irritation: Causes moderate irritation
Eye Irritation: Causes severe eye irritation
Respiratory Sensitization: Inhalation of dust may cause lung irritation, coughing, and shortness of breath
Chronic Effects: Prolonged or repeated exposure may cause organ damage (liver, kidneys), dermatitis
Mutagenicity: No evidence in current studies
Carcinogenicity: Not listed by IARC, NTP, or OSHA
Reproductive Toxicity: Not enough data; use precaution
Target Organs: Skin, eyes, respiratory system, liver, and kidneys
Aquatic Toxicity: LC50 (Fish, 96hr): 38 mg/L; EC50 (Daphnia, 48hr): 22 mg/L
Biodegradability: Not readily biodegradable, moderate persistence in environment
Bioaccumulation: Low potential for bioaccumulation according to estimated partition coefficient
Mobility in Soil: Moderate, solubility contributes to movement in moist soil
Hazardous to Environment: Toxic to aquatic life, may cause adverse effects in aquatic environments with long-term exposure
Other Adverse Effects: No information on ozone depletion, photochemical ozone creation, endocrine disruption
Waste Disposal: Dispose of as hazardous chemical waste in accordance with local regulations; avoid release to sewage and waterways
Container Disposal: Decontaminate containers before disposal, do not reuse, send to licensed chemical disposal contractor
Special Precautions: Consult national or regional regulations regarding hazardous waste classification and disposal methods
Incineration: Permissible for offsite incineration under properly controlled conditions
Landfill: Avoid landfill disposal unless no alternative exists and permitted by authorities
UN Number: UN3077
DOT Classification: Environmentally hazardous substance, solid, n.o.s. (2Bsa, Obsa), Class 9
Packing Group: III
Labeling Requirements: Environmentally hazardous substance, Class 9
IMDG Code: 9
IATA/ICAO: Fulfills dangerous goods criteria, subject to air transport regulations
Marine Pollutant: Yes
Special Precautions for Transport: Protect containers from physical damage and moisture, ensure proper labeling and documentation, segregate from incompatible goods
TSCA Status: Listed
REACH Registration: Registered & compliant, meets substance of very high concern requirements
DSL/NDSL (Canada): Listed
Japan ENCS: Listed
China IECSC: Listed
Korea ECL: Listed
Hazardous Chemical Recognition: OSHA Hazard Communication Standard 29 CFR 1910.1200
SARA 313: Not subject to reporting
California Proposition 65: Not listed
WHMIS Classification: D2B - Toxic Materials
Other Regulations: Subject to control under environmental release prevention acts, follow applicable federal, state, and local regulations
