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Chemical name: 1-Naphthyl Isothiocyanate
Synonyms: 1-Naphthalenyl isothiocyanate
Molecular formula: C11H7NS
Appearance: Pale yellow crystalline solid
Odor: Sharp, pungent
Common uses: Laboratory reagent, biochemical tool for research in liver function and metabolism studies
Main hazards: Toxic if swallowed, may cause severe irritation to eyes, skin, and upper respiratory tract, can provoke allergic reactions in some people
Globally Harmonized System classification: Acute toxicity (oral), Skin and eye irritation, Specific target organ toxicity
Signal word: Danger
Pictograms: Skull and crossbones, exclamation mark, corrosion
Potential symptoms: Burning sensation, redness, coughing, headache, possible liver toxicity on repeated exposure
Main ingredient: 1-Naphthyl Isothiocyanate — C11H7NS
Concentration: >99% in most research-grade samples
Impurities: Trace organic byproducts may appear in low-quality batches, but pure research use demands high purity
Inhalation: Remove victim to fresh air, support breathing, consult medical help for persistent symptoms
Skin contact: Immediately wash thoroughly with soap and water, remove contaminated clothing, seek attention for irritation
Eye contact: Rinse cautiously with water for at least 15 minutes, keep eyelids open, get medical help quickly
Ingestion: Rinse mouth, do not induce vomiting, seek medical evaluation — ingestion can cause gastrointestinal distress and possible systemic toxicity
Suitable extinguishing media: Use dry chemical, foam, or carbon dioxide — water mist for cooling nearby surfaces if needed
Hazardous combustion products: Emits toxic fumes of nitrogen oxides and sulfur oxides
Protective equipment: Wear full protective gear, positive pressure self-contained breathing apparatus, avoid inhalation of smoke or vapors from burning material
Personal precautions: Ventilate area, use appropriate personal protective equipment including gloves, goggles, and a suitable lab coat
Environmental precautions: Prevent spillage from entering drains, soil, or natural water sources, handle spills with care to avoid wider contamination
Clean-up methods: Collect spill with inert absorbent material, place in clearly labeled chemical waste containers for proper disposal, decontaminate area with soap and water
Handling: Handle in a chemical fume hood, avoid direct contact with skin and eyes, wash hands after use, never eat or drink in work area
Storage: Store in tightly sealed containers, in a cool, dry, and well-ventilated spot, keep away from incompatible substances like strong acids and bases, do not store near food or drink
Engineering controls: Always work in a well-ventilated laboratory equipped with a functioning fume hood
Personal protective equipment: Wear chemical-resistant gloves (such as nitrile or neoprene), safety goggles, lab coat
Respiratory protection: Use a properly fitted NIOSH-approved respirator if handling large amounts or if ventilation is limited
Hygiene measures: Change contaminated clothing promptly, never use damaged protective equipment, always wash thoroughly before breaks and after handling
Appearance: Yellow crystalline powder
Molecular mass: About 185.25 g/mol
Melting point: Around 66 °C
Solubility in water: Not appreciably soluble
Solubility in organic solvents: Soluble in ethanol, acetone, and other organic solvents typical in lab work
Odor: Characteristic, irritating
Stability: Chemically stable under normal handling conditions, sensitive to moisture and prolonged exposure to light
Incompatible materials: Strong oxidizers, acids, bases, moisture
Decomposition products: Toxic gases like nitrogen oxides, carbon oxides, sulfur compounds
Polymerization: Not expected under standard conditions
Acute toxicity: Harmful if swallowed or inhaled, animal studies have shown liver and kidney effects
Irritation: Caustic to eyes, skin, and respiratory tract on contact
Chronic effects: Repeated or prolonged exposure can cause organ damage, particularly to the liver
Possible allergic reactions: Skin sensitization can occur over time
Carcinogenicity: No conclusive human data, but compounds of similar structure have raised concerns in some toxicology tests
Aquatic toxicity: Toxic to aquatic life with long-lasting effects, persistence in water and soil may lead to bioaccumulation
Mobility: Low in water but can persist in soil and sediments
Degradability: Breakdown may be slow, contributing to build-up in environmental systems
Precautions: Prevent large releases into waterways, always adhere to environmental protection guidelines to limit impact on local ecosystems
Waste disposal: Dispose of as hazardous chemical waste in accordance with local, regional, and national regulations
Contaminated packaging: Handle as hazardous material, do not reuse containers
Incineration: Professional chemical incineration is more effective for destruction, release to sewers or regular trash creates unnecessary risk
Transport classification: Regulated as toxic solid for shipping by ground, air, or sea where relevant
Proper shipping name: Toxic solid, organic, n.o.s.
Packing group: Usually II or III depending on jurisdiction and purity
Precautions: Clearly label containers, secure during transport, prevent leaks and contact during handling, always follow pertinent regulations for hazardous lab chemicals
Workplace regulations: Subject to laboratory safety standards for handling toxic chemicals, including OSHA rules for toxic substances
Environmental controls: Use must comply with Clean Water and Clean Air Acts in the United States, or similar frameworks internationally
Recordkeeping: Labs or facilities handling this substance typically maintain inventory and exposure records, as use in research must meet rigorous oversight to protect both workers and the environment
PPE and safety training: Required for all personnel exposed to hazardous chemicals like 1-Naphthyl Isothiocyanate, with regular training updates
