Product Name: Disodium {Sulfonylbis[4,1-Phenylenediazene-2,1-Diyl(1-Ethyl-6-Hydroxy-4-Methyl-2-Oxo-1,2-Dihydropyridine-5,3-Diyl)]}Dimethanesulfonate
Common Synonyms: Disodium Sulfonylbis Phenylenediazene Dimethanesulfonate, Synthetic Dye Precursor
Chemical Formula: C36H28N8Na2O10S4
Recommended Use: Pigment manufacturing, research chemical applications
Supplier Details: Full company name, complete mailing address, business telephone number for emergencies, and email for technical inquiries
Emergency Contact Number: Local poison control, medical response hotline, and fire services number quantified for both domestic and international shipping scenarios
GHS Classification: Acute Toxicity (Oral, Dermal and Inhalation) – Category 4, Skin Irritation – Category 2, Eye Damage/Irritation – Category 2A, Specific Target Organ Toxicity – Single Exposure (Respiratory System) Category 3
Signal Word: Warning
Primary Health Hazards: Irritation to mucous membranes, eyes, skin; possible allergic skin reactions; potential for respiratory discomfort if dust is inhaled
Hazard Statements: May cause eye and skin irritation, harmful if swallowed or in contact with skin, may cause respiratory irritation upon inhalation of powder or particles, may exacerbate symptoms for individuals with allergies
Precautionary Statements: Avoid breathing dust, fumes, mist or vapors; use adequate ventilation, wear protective gloves and eye protection, wash thoroughly after handling, store in a well-ventilated place, keep container tightly closed
Other Hazards: Staining of skin and clothing occurs easily, water-reactive degradation possible releasing sulfur oxides, avoids direct contact with strong oxidizers or reducing agents
Main Ingredient: Disodium {Sulfonylbis[4,1-Phenylenediazene-2,1-Diyl(1-Ethyl-6-Hydroxy-4-Methyl-2-Oxo-1,2-Dihydropyridine-5,3-Diyl)]}Dimethanesulfonate; content above 97% by weight in pure form
Impurities and Stabilizing Additives: Possible presence of sodium sulfate (Na2SO4) less than 2%, trace water (moisture content below 0.5%), process residues such as organic halides below 0.1%, trace ammonia compounds from synthesis pathway
CAS Number: On request; confirm unique identifier from technical datasheet
Eye Contact: Flush immediately with lukewarm, clean water for a minimum of 15 minutes while holding eyelids open, remove contact lenses if applicable, seek medical attention if irritation persists or feeling of grittiness develops
Skin Contact: Wash thoroughly using mild soap under running water for at least 15 minutes, remove any contaminated clothing and shoes, launder soiled garments before reuse, seek medical help with persistent irritation or allergic response
Inhalation: Move person to fresh air, keep at rest in comfortable position, administer artificial respiration only if breathing is irregular or absent, provide oxygen if available and necessary, monitor for respiratory distress, get emergency medical care if symptoms worsen
Ingestion: Rinse mouth thoroughly with water, do not induce vomiting, give water to dilute, never give anything by mouth to an unconscious person, contact poison control or provide supportive care
Most Important Symptoms and Effects (Acute and Delayed): Burning or redness of eyes or skin, cough, sore throat, nausea, abdominal pain, shortness of breath, swelling; delayed hypersensitivity responses possible
Recommendations for Immediate Medical Attention and Special Treatment: Symptomatic and supportive care, no known specific antidote, treat as chemical exposure
Suitable Extinguishing Media: Foam, dry chemical powder, carbon dioxide, water spray for larger fires where possible runoff can be controlled
Unsuitable Extinguishing Media: Avoid direct high-pressure water jet that can spread material
Specific Hazards Arising from Chemical: Sulfur oxides, nitrogen oxides, sodium compounds, dense, colored smoke; risk of toxic gas release on thermal decomposition
Protective Equipment and Precautions: Full protective suit, self-contained breathing apparatus, avoid inhalation of combustion products, keep containers cool by spraying with water from a safe distance
Firefighting Procedures: Approach from upwind to avoid hazardous fumes, contain run-off to prevent entry into drains or water sources
Personal Protection: Use appropriate personal protective equipment (PPE) such as gloves, goggles, coveralls, and dust mask or respirator; prevent skin or eye exposure, avoid inhaling dust; notify supervisory personnel of emergency
Spill Response: Contain spillage with inert absorbent materials, clean up using non-sparking tools and sweep or vacuum only with HEPA filtration, prevent formation of airborne dust, collect in labeled containers for disposal; ventilate spill area thoroughly
Environmental Precautions: Block entry to surface water, soil or drains, notify local environmental authorities as required, monitor air for particulate matter in contained spaces
Reference to Other Sections: Refer to Section on Disposal and PPE for additional instructions
Safe Handling Recommendations: Wear appropriate PPE, handle in well-ventilated environment, avoid generating dust, wash hands and exposed skin before eating or drinking, minimize direct contact and prevent cross-contamination
Storage Requirements: Store in a cool, dry place in tightly sealed original packaging; keep away from incompatible materials like strong oxidizing agents and acids; ensure container is labeled securely; segregate from food and feed
Technical Measures: Use closed processes or ventilation to reduce exposure, maintain area cleanliness, routine checks on storage integrity
Exposure Limits: No specific occupational exposure limit established; recommended threshold based on particulates not otherwise classified (PNOC): 10 mg/m3 (total), 3 mg/m3 (respirable)
Engineering Controls: Local exhaust ventilation, process enclosure, dust collection, room air renewal
Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile, neoprene, butyl rubber), safety goggles with side shields, face shield for large-scale handling, lab coat or coveralls, closed-toe shoes, disposable mask or P100 respirator when airborne particles are possible
Hygiene Measures: Washing facilities for eye and skin, keep work clothing separate from regular apparel, launder protective garments regularly, never eat, drink, or smoke in processing areas
Appearance: Fine powder or crystalline solid, deep orange to red color
Odor: Slight aromatic or sulfurous tinge
Odor Threshold: Not determined
pH: 6.5 - 8.0 (1% aqueous solution)
Melting Point/Freezing Point: Decomposes above 185°C, does not melt cleanly
Boiling Point/Range: Not applicable (decomposes before boiling)
Flash Point: Not flammable under standard conditions
Evaporation Rate: Not volatile
Flammability (solid, gas): Non-flammable but can burn with difficulty
Upper/Lower Flammability or Explosive Limits: Not available
Vapor Pressure: Negligible
Vapor Density: Not applicable
Relative Density: 1.25–1.35 (25°C)
Solubility: Soluble in water, slightly soluble in alcohol, insoluble in hydrocarbons
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Not available
Decomposition Temperature: Above 180°C, toxic gas risk
Viscosity: Not applicable
Chemical Stability: Stable under recommended storage and use conditions; moisture absorption may cause clumping and partial hydrolysis
Reactivity: Will not polymerize; reacts with strong acids, oxidizers, and some reducing agents—decomposition may release sulfur dioxide and nitrogen oxides
Conditions to Avoid: High heat, direct sunlight, damp or humid environments
Incompatible Materials: Strong acids, bases, oxidizing agents, reducing chemicals, halogenating agents
Hazardous Decomposition Products: Sulfur oxides, nitrogen oxides, carbon monoxide/carbon dioxide, organic acids under fire conditions
Acute Toxicity – Oral, Dermal, Inhalation: Estimated LD50 (oral, rat) 400–700 mg/kg; LD50 (dermal, rabbit) >2000 mg/kg; possible irritation or mild toxicity from short exposures
Skin Corrosion/Irritation: Causes redness, possible swelling on direct contact; more pronounced with repeat or prolonged skin exposure
Serious Eye Damage/Irritation: Produces reddening, tearing, and mild to moderate conjunctivitis; avoid direct splashes
Respiratory or Skin Sensitization: Potential for allergy in certain individuals after repeated exposure
Germ Cell Mutagenicity: No conclusive data available
Carcinogenicity: No classified carcinogen by IARC, ACGIH, NTP, or OSHA for this specific compound, though aromatic amine dye precursors require caution
Reproductive Toxicity: No known reproductive or developmental risk at expected industrial exposure levels
STOT – Single/Repeated Exposure: May affect respiratory tract after high exposure—report symptoms for medical assessment
Aspiration Hazard: Not classified as aspiration hazard
Toxicity: Harmful to aquatic life at moderate concentrations; 96-hour LC50 (fish) estimated between 1 and 5 mg/L; sub-lethal effects possible in algae and invertebrates
Persistence and Degradability: Moderately persistent—biodegradation slow under most conditions; azo bond cleavage required for breakdown
Bioaccumulative Potential: Low bioaccumulation expected due to good water solubility and moderate molecular size
Mobility in Soil: Fairly mobile, but adsorption varies with soil pH and organic load
Other Adverse Effects: Can cause staining of aquatic environments, affect light penetration, disrupt photosynthesis in exposed microflora
Waste Treatment Methods: Handle as hazardous waste under local regulations, use licensed disposal contractor; incineration preferred with flue gas scrubbing; landfill only where permitted and never in unlined pits
Container Disposal: Triple rinse and puncture before sending to approved chemical waste facility; never reuse packaging for food or personal use
Contaminated Packaging: Delabel and mark as hazardous-suspect until cleaned; follow facility rules for hazardous waste
Precautions: Never flush to sewer, surface water, or soil; consult local/state/national regulations for chemical waste
UN Number: Obtain from most recent shipping regulation schedule—commonly UN3077 for environmentally hazardous substances, solid, n.o.s.
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains disodium sulfonylbis phenylenediazene compound)
Hazard Class: 9 (Miscellaneous dangerous goods)
Packing Group: III (minor danger)
Environmental Hazards: Marine pollutant, applicable to shipments by sea or waterway
Special Precautions for User: Transport in original or approved packaging, avoid spillage or dust formation, carry emergency cleanup kit for minor releases, train all handlers on emergency protocol
Transport In Bulk Statement: Not regulated for solid bulk; refer to MARPOL Annex II and IBC Code where relevant
Safety, Health and Environmental Regulations/Legislation: Listed in TSCA inventory in the United States, subject to workplace hazard communication rules; registered for manufacture/import under REACH in European Union; covered by OSHA Chemical Hazard Communication, CERCLA, SARA Title III reporting based on volume
Labeling Requirements: Ensure workplace labeling includes signal word, hazard statement, pictogram; provide SDS access to all users; follow GHS labeling conventions globally
Chemical Safety Assessment: Safety assessment completed under manufacturer’s chemical risk protocols, consult supervisory authority for detailed classification
Other Regulatory Lists: Not listed as a persistent organic pollutant, hazardous air pollutant, or ozone depleting substance, but check site-specific rules for complex aromatic amines
