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Chemical Name: P-Nitrobenzoylhydrazine
Molecular Formula: C7H7N3O3
Common Uses: Research applications, chemical synthesis, specialty intermediates
Appearance: Pale yellow to light orange crystalline powder
Odor: No pronounced odor observed during typical handling
Solubility: Limited water solubility, more soluble in organic solvents such as ethanol or acetone
Synonyms: 4-Nitrobenzohydrazide
CAS Number: 619-98-9
Signal Word: Warning
Hazard Class: Acute toxicity (oral and dermal), skin and eye irritation
Specific Dangers: Irritates skin, may cause eye redness or watering, inhaling dust can trigger respiratory discomfort, ingestion triggers gastrointestinal upset
Chronic Effects: Extended exposure could sensitize skin or respiratory system
Environmental Danger: Toxic to aquatic life, potential for lingering effects
Common Routes of Entry: Skin, eyes, inhalation, accidental ingestion
P-Nitrobenzoylhydrazine: Main substance, typically over 98% purity in lab-grade batches
Common Impurities: Traces of moisture, unreacted starting materials, organic side products
Exposure Limits: No established occupational limits specific to this compound, but treat as potentially harmful in absence of firm guidance
Eye Contact: Wash gently with clean tap water for at least 15 minutes, hold eyelids open, seek medical help if irritation continues
Skin Contact: Remove contaminated clothing, wash affected areas with soap and water, persistent redness merits medical attention
Inhalation: Remove to fresh air, support easier breathing, consult a doctor if symptoms like coughing or wheezing don't resolve
Ingestion: Rinse mouth, avoid swallowing further, don’t induce vomiting without medical direction, get medical help fast
Notes for Medics: Symptomatic treatment preferred, monitor for allergic or severe respiratory response
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, no direct water jet on product container
Unusual Combustion Products: Nitrogen oxides, carbon monoxide, possibly hydrogen cyanide fumes
Protective Equipment: Self-contained breathing apparatus, full protective gear
Firefighting Tactics: Move containers from fire zone if safe, cool tanks with water spray from a distance
Additional Risks: Dust explosions possible if significant powder dispersion occurs
Personal Protection: Avoid breathing dust, ventilate area, wear gloves and goggles
Spill Handling: Stop spillage if safe, collect gently using non-sparking tools, sweep carefully to minimize dust
Environmental Protection: Prevent entry into watercourses and sewage, contain using sand or inert absorbent
Cleanup: Bag waste in compatible, sealed containers for later disposal, wipe surfaces to prevent lingering residue
Safe Handling: Work in ventilated areas, avoid skin contact, use dust extraction or local exhaust
Hygiene: Wash hands after use, don’t eat, drink, or smoke nearby, store away from personal items
Storage Recommendations: Keep dry, sealed away from light, ignition sources, and oxidizing chemicals, refrigerate if advised by supplier
Labeling: Clear hazard labeling ensures correct user awareness and quick response if incidents unfold
Ventilation: Local exhaust or fume hood needed in normal use, extra care during powder transfer
Hand Protection: Chemical-resistant gloves, frequent change-out recommended after direct product contact
Eye Protection: Tight goggles, face shields for bulk handling
Respiratory Protection: Certified particulate mask or respirator if powder becomes airborne
Clothing: Lab coat or disposable coveralls, change out contaminated clothes as soon as possible
Physical State: Solid, crystalline powder
Color: Yellow to orange
Odor: Neutral or faintly chemical
Melting Point: Often reported between 202-208°C
Boiling Point: Not relevant, decomposes prior to boiling
Solubility: Limited in water, higher in common organics
Vapor Pressure: Negligible at room temperature
Density: Roughly estimated near 1.5 g/cm³
Chemical Stability: Stable under normal storage, decomposes with heat or exposure to strong acids and bases
Hazardous Decomposition: Nitrogen oxides, carbon oxides, potentially toxic gaseous products
Incompatibles: Strong oxidizers speed up hazardous reactions, acidic conditions break down structure faster
Risk of Polymerization: Not known under typical laboratory conditions
Routes of Exposure: Inhalation, skin, eye, ingestion
Effects on Health: Acute exposure can create skin irritation or redness, eyes may water or redden, dry powder inhaled deep enough might cause coughing or shortness of breath
Symptoms: Gastrointestinal upset if swallowed, headache or drowsiness possible at higher exposure
Chronic Exposure: Unlikely without repeated or poor handling, allergic skin reaction could develop on ongoing exposure
Sensitization: Sensitized individuals react stronger
Carcinogenicity: No direct evidence, though nitroaromatic compounds often face close monitoring for mutagenic risk
Water Toxicity: Harmful to aquatic organisms at significant levels
Persistence: Moderate to persistent, may not degrade quickly in environment
Bioaccumulation: No high potential documented, but suitable for close monitoring
Proper Containment: Essential in labs and factories, prevents accidental drainage to sewer and nearby water bodies
Safe Disposal Practices: Treat as hazardous chemical waste, follow local rules for solvent and organics disposal
Recommended Methods: Burn in licensed incinerator with proper scrubbers, avoid landfill disposal
Container Handling: Rinse empty containers thoroughly, send for accredited hazardous recycling or incineration
Packaging: Sealed, shock-resistant containers, labeled for hazardous chemical transport
Transport Risks: Secure from tipping, shield from moisture, segregate from oxidizers and strong acids
Regulatory Status: Not classified as highly dangerous for transport in most regions but treat with extra care due to toxicity
Emergency Procedures: Emergency cards and documentation needed for road, rail, or air shipment
Restrictions: Use restricted to trained individuals in regulated environments
Laboratory Controls: Chemical Hygiene Plans and Risk Assessments expected for regular handlers
PPE Laws: National laws consult for chemical management and worker safety
Environmental Laws: Spill reporting and accidental release usually reportable by environmental health oversight bodies
Labeling Requirements: Clear hazard signs, pictograms, and precautionary advice remain critical to safe workplace use
