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Product name: Dichlorophenyl Isocyanate
Chemical family: Aromatic isocyanate
Synonyms: 2,4-Dichlorophenyl isocyanate, DCPI
CAS Number: 2909-41-7
Intended use: Intermediate for specialty chemicals, industrial coatings
Manufacturer/Supplier: Refer to product label
Contact details: Company provided on SDS
Emergency phone number: Check regional listing
GHS classification: Acute Toxicity (Oral, Inhalation, Dermal), Skin Corrosion/Irritation, Eye Irritation, Respiratory Sensitization, Specific Target Organ Toxicity
Signal word: Danger
Hazard statements: Toxic if inhaled, Harmful if swallowed, Causes skin irritation, Serious eye irritation, May cause respiratory irritation or allergic reactions
Pictograms: Skull and crossbones, exclamation mark, health hazard
Precautionary statements: Avoid breathing vapors, Wear protective gear, Wash exposed skin thoroughly, Use only in well-ventilated areas
Most important hazards: Respiratory problems, eye and skin burns, allergic reactions on repeated contact
Chemical name: Dichlorophenyl Isocyanate
CAS Number: 2909-41-7
Concentration: >98% by weight
Impurities: Trace chlorinated compounds (below 1%)
Other ingredients: No additives or stabilizers
Inhalation: Remove affected person to fresh air immediately; seek medical attention if symptoms such as coughing, wheezing, or chest tightness appear
Skin contact: Remove contaminated clothing; wash skin thoroughly with soap and water; do not use solvents
Eye contact: Rinse cautiously with water for at least fifteen minutes; hold eyelids apart and flush thoroughly; seek further medical advice
Ingestion: Rinse mouth; do not induce vomiting; give water to dilute chemical in stomach only if conscious; get urgent medical attention
Advice to physician: Treat symptomatically; monitor respiratory function closely due to potential for pulmonary edema or asthma-like symptoms post-exposure
Suitable extinguishing media: Dry chemical, carbon dioxide, foam, avoid using water jet directly on burning substance
Unsuitable extinguishing agents: Direct water stream may spread the burning material
Hazardous combustion products: Phosgene, hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide
Firefighting instructions: Evacuate area, use self-contained breathing apparatus and full protective gear, avoid inhalation of toxic fumes
Special protective actions: Cool exposed sealed containers with water spray from safe distance, do not allow runoff from fire control to enter drains or surface water
Personal precautions: Evacuate personnel from area, ventilate enclosed spaces, wear full protective clothing including positive pressure respiratory protection
Environmental precautions: Prevent entry into sewers, drains or waterways, contain spillage and absorb with inert material (sand, earth, vermiculite)
Spill cleanup methods: Collect solid materials in appropriate containers for disposal; neutralize residual isocyanate with dilute ammonia solution then rinse area with water
Notification: Report releases to authorities as required by local regulations; mark contaminated zones clearly
Precautions for safe handling: Use closed systems for transfer or application, minimize contact with skin or eyes, avoid inhalation of vapor or dust, keep away from food and beverages
Technical measures: Handle in a chemical fume hood, use dust-proof and explosion-proof equipment, implement spill containment
Storage requirements: Store in tightly sealed containers, in a cool, dry, well-ventilated warehouse, away from sunlight, heat sources, water and incompatible materials such as strong acids or amines
Storage conditions: Maintain temperature between 5 and 25°C, avoid temperature extremes, ensure secondary containment
Incompatible materials: Strong oxidizers, acids, amines, alcohols, water
Exposure limits: Workplace Occupational Exposure Limit (OEL): typically 0.02 mg/m³ (8-hr TWA); check local regulatory limits
Engineering controls: Install process enclosures, use local exhaust ventilation, implement closed handling
Personal protective equipment: Respiratory—full facepiece respirator (organic vapor/acid gas cartridge); Hand—chemical resistant gloves (nitrile, butyl rubber); Eyes—goggles or face shield; Skin—long sleeves, coated chemical resistance clothing, closed footwear
Hygiene measures: No eating, drinking, or smoking in work area; wash hands and exposed skin thoroughly after handling
Appearance: White to pale yellow crystalline solid
Odor: Sharp, pungent chemical odor
Odor threshold: Not available
pH: Not applicable (reacts with water)
Melting point: 44-47°C
Boiling point: 255°C
Flash point: 145°C
Evaporation rate: Not available
Flammability: Not highly flammable, may burn at elevated temperature
Vapor pressure: Very low at room temperature (approx. 0.002 mmHg at 25°C)
Vapor density: Heavier than air
Solubility: Reacts slowly with water; soluble in organic solvents such as acetone, benzene
Partition coefficient (log Kow): Not available
Auto-ignition temperature: Data not available
Decomposition temperature: >200°C, releases toxic gases
Other data: Stable below decomposition temperature in absence of water/moisture
Chemical stability: Stable under standard storage conditions; decomposes in moisture
Reactivity: Reacts vigorously with water, alcohols, amines, acids
Conditions to avoid: Exposure to humidity, high temperatures, open flames, direct sunlight
Incompatible materials: Water, strong bases, amines, oxidizing agents
Hazardous decomposition products: Phosgene, hydrogen chloride, carbon monoxide, carbon dioxide upon heating or combustion
Hazardous polymerization: May occur on contact with moisture or incompatible substances
Acute toxicity (oral): LD50 (rat) 110 mg/kg
Acute toxicity (dermal): LD50 (rabbit) estimated 890 mg/kg
Acute toxicity (inhalation): Highly toxic, LC50 (rat, 4h) 0.13 mg/L
Skin corrosion/irritation: Produces severe skin burns and blisters
Eye damage/irritation: Severe eye irritation, risk of permanent damage
Respiratory or skin sensitization: Sensitizer; repeated exposure may cause asthmatic symptoms, allergic dermatitis
Germ cell mutagenicity: No reliable data
Carcinogenicity: No direct evidence, but related aromatics classified as possible carcinogens
Reproductive toxicity: Animal studies inconclusive
STOT—Single exposure: May affect respiratory system; coughing, irritation, chest tightness
STOT—Repeated exposure: Possible respiratory sensitization or chemical asthma
Ecotoxicity—Fish: Harmful to aquatic life, LC50 (96hr, trout) 5.7 mg/L
Ecotoxicity—Aquatic invertebrates: EC50 (48hr, daphnia) 3.2 mg/L
Ecotoxicity—Plants/algae: May inhibit growth
Persistence and degradability: Hydrolyzes in water to form insoluble ureas and amines; not readily biodegradable
Bioaccumulation: Low potential; breakdown products may persist in sediment
Mobility in soil: Expected to adsorb strongly to soil; low leaching potential
Other adverse effects: Toxic to aquatic organisms by rapid hydrolysis and formation of toxic products, risk for downstream contamination if spilled into water bodies
Safe handling for disposal: Neutralize small quantities with dilute ammonia or sodium carbonate solution, keep in designated chemical waste containers
Disposal method: Submit to licensed chemical waste facility for incineration, do not landfill untreated material
Packaging: Triple rinse containers, puncture or crush before disposal, avoid reuse
Environmental precautions: Prevent release to environment by following best-practice containment and spill control; do not wash into drains or waterways
Regulatory compliance: See local hazardous chemical waste regulations; label containers as per national requirements
UN number: UN 2206
Proper shipping name: Isocyanates, toxic, solid, n.o.s. (Dichlorophenyl Isocyanate)
Class: 6.1 (Toxic substances)
Packing group: II
Hazard label: Toxic
Special provisions: Segregate from foodstuffs, ensure fully secured packaging, transport in accordance with national and international regulations
Transport by land (ADR/RID): Regulated
Transport by sea (IMDG): Marine pollutant, classified as toxic solid
Transport by air (IATA): Restricted, contact carrier for acceptance
Emergency procedures: Instruct drivers on emergency action codes, carry emergency spill kit
Labelling: According to GHS, signal word DANGER, hazard pictograms for toxicity and irritation
Inventory status: Listed in TSCA (US), EINECS (EU), ENCS (Japan), AICS (Australia), DSL (Canada)
Workplace classification: Controlled under hazardous chemicals regulations—strict workplace exposure controls
Chemical safety assessment: Chemical Safety Report required for quantities over 1 tonne/year in the EU; operators must implement strict exposure management
Other regulations: Subject to REACH registration (EU), OSHA hazardous chemicals standard (US), WHMIS (Canada), workplace hygiene and safety directives in other jurisdictions
Special requirements: Employers to provide training on safe handling, personal exposure monitoring, regular health surveillance for workers potentially exposed
