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Product: 3,5-Dinitrobenzoic Acid
Chemical Formula: C7H4N2O6
CAS Number: 99-34-3
Common Uses: Laboratory reagent, intermediate in organic synthesis, standard in analytical chemistry
Appearance: Yellow crystalline solid
Odor: Odorless
Hazards: Irritant to skin, eyes, and respiratory tract; harmful if swallowed or inhaled
Risk Statements: Exposure can cause burns to mucous membranes; possible allergic reactions with repeated contact
Classification: Acute toxicity, hazardous to aquatic environment
Warning Symbols: Exclamation mark for irritant, environmental hazard symbol
Routes of Entry: Inhalation, skin and eye contact, ingestion
Chemical Name: 3,5-Dinitrobenzoic Acid
Purity: Typically above 98% in laboratory-grade material
SYNONYMS: 3,5-Dinitrobenzoate, m,dinitrobenzoic acid
Hazard Components: No significant stabilizers or additives found in pure samples
Eye Contact: Immediate rinsing with water, keeping eyelids open; seek medical attention without delay
Skin Contact: Remove contaminated clothing, wash with copious amounts of soap and water
Inhalation: Move to fresh air, monitor for breathing difficulty, visit healthcare provider if symptoms linger
Ingestion: Rinse mouth thoroughly, do not induce vomiting, get medical help
Symptoms to Watch For: Burning, redness, coughing, shortness of breath, nausea
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide; water may be used for larger fires only
Fire Hazards: May decompose at high temperature, releasing toxic gases such as nitrogen oxides
Precautions: Wear self-contained breathing apparatus, avoid inhalation of fumes
Flammability: Not easily ignited, but sustains combustion under intense heat
Special Hazards: Containers exposed to heat may rupture due to pressure build-up
Personal Protection: Chemical-resistant gloves, eye protection, laboratory coat or apron
Spill Clean-Up: Avoid dust formation, ventilate area; collect solid with shovel or brush, dispose according to local regulations
Environmental Precautions: Prevent runoff into drains or water systems to limit ecological damage; isolate spill area
Handling Practices: Handle in ventilated area, avoid contact with skin and eyes, wear appropriate PPE
Storage Conditions: Store in tightly closed, labeled containers away from direct sunlight, heat sources, and incompatible materials such as strong bases, oxidizers, and reducing agents
Special Measures: Limit dust, keep away from food and beverages; never store in reactive metal containers
Engineering Controls: Use chemical fume hood for laboratory handling, ensure emergency showers and eyewash stations nearby
Personal Protection: Nitrile or neoprene gloves, chemical splash goggles, cotton laboratory coat
Respirators: Suitable mask or respirator for dusty environments above exposure limits
Work Practices: Always wash hands after handling, avoid eating or drinking around open containers
Physical State: Crystalline powder
Color: Yellow
Melting Point: Ranges between 203 and 205 °C
Solubility: Slightly soluble in water, more soluble in organic solvents including ethanol, acetone, diethyl ether
Odor Threshold: Not significant due to odorless nature
pH: Acidic in aqueous suspension
Vapor Pressure: Negligible at room temperature
Stability: Remains stable under recommended storage conditions
Incompatible Materials: Strong bases, oxidizers, reducing agents; certain metals may catalyze decomposition
Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide
Reactivity: Reacts with agents that decompose acids or nitro compounds
Polymerization: Does not polymerize
Acute Effects: Oral ingestion triggers gastrointestinal burns, vomiting, diarrhea
Respiratory Effects: Inhalation causes coughing, throat and lung irritation
Skin and Eye Contact: Direct contact leads to redness, swelling, possible burns
Chronic Exposure: No strong evidence points to long-term systemic toxicity in humans at low doses, but occupational exposure has shown allergic dermatitis and mild toxicity with repeated contact
Mutagenicity and Carcinogenicity: Data insufficient for definitive classification; no evidence of carcinogenicity in animal studies at available doses
Aquatic Toxicity: Toxic to aquatic organisms, possibility to cause long-term adverse effects in aquatic environments
Persistence and Degradability: Breakdown in natural waters can be slow; product shows potential for persistence
Bioaccumulation: Low to moderate likelihood due to poor water solubility
Precautions: Limit discharge to waterways, manage waste
Disposal Methods: Dispose through licensed chemical waste handlers; burning must occur in a chemical incinerator equipped with afterburner and scrubber
Avoid: Release into environment, pouring down drains, or mixing with general trash
Legal Compliance: Hazardous waste regulations apply in most jurisdictions due to toxicity profile
UN Identification: Falls under dangerous goods for transport by road, rail, air, and sea
Labels: Corrosive, environmentally hazardous as applicable
Handling During Transit: Use unbreakable packaging when possible, mark containers clearly
Precautions: Prevent exposure to moisture, heat, or impacts that could rupture packaging
Legal Classification: Included on hazardous substance inventories of several jurisdictions
Labelling Requirements: Must display hazard pictograms, basic safety instructions, and precautionary statements under chemical safety regulations
Occupational Exposure Limits: Not specifically regulated in many countries, but general dust and toxic compound standards apply
Environmental Release: Controls exist on intentional release; some countries require tracking large usage or transport
Recordkeeping: Labs and companies handling large amounts must keep records for regulatory inspections
