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Product Name: Chromyl Chloride
Chemical Formula: CrO2Cl2
Synonyms: Chromium Oxychloride, Chromium(VI) Oxychloride
CAS Number: 14977-61-8
Recommended Use: Laboratory reagent, oxidizing agent, manufacturing chemicals
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Classification: Acute Toxicity (Oral, Inhalation, Dermal); Skin Corrosion; Serious Eye Damage; Carcinogen
Hazard Statements: Fatal if inhaled, toxic in contact with skin and if swallowed, causes severe skin burns and eye damage, may cause cancer, may cause genetic defects, causes damage to organs
Pictograms: Health hazard, corrosive, environment, skull and crossbones
Signal Word: Danger
Precautionary Statements: Avoid all contact, use only in a fume hood, wear chemical-resistant gloves, full-face shield, avoid release into the environment, follow personal protection recommendations on this MSDS.
Chemical Name: Chromyl Chloride
Concentration: 100% (or according to package label for mixtures)
CAS Number: 14977-61-8
Impurities and Stabilizers: No stabilizers or additives listed for reagent grade material; check supplier documentation when using non-analytical grades.
Inhalation: Move person immediately to fresh air, keep them at rest, give oxygen if breathing is difficult, call a physician right away, do not give anything by mouth if unconscious
Skin Contact: Remove contaminated clothing, wash skin thoroughly with plenty of running water for at least fifteen minutes, seek immediate medical attention, launder clothing before reuse
Eye Contact: Rinse cautiously with water for at least fifteen minutes, remove contact lenses after the first few minutes and continue rinsing, get prompt medical help
Ingestion: Never induce vomiting, get immediate medical attention, rinse mouth with water only if person is conscious, do not give anything to drink except under medical supervision
Notes for Physicians: Send to specialist if possible, treat symptomatically, monitor for signs of chromium poisoning, treat chemical burns like thermal burns, support vital functions as needed.
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or alcohol-resistant foam, do not use water jet
Specific Hazards: Non-combustible, but reacts with water to produce corrosive hydrogen chloride gas and chromium compounds, thermal decomposition may release toxic fumes of chromium oxides and chloride
Special Protective Equipment: Firefighters wear self-contained breathing apparatus with full face-piece, use chemical-resistant clothing, avoid direct contact with spilled material
Advice: Isolate area, evacuate unnecessary personnel, prevent fire-fighting water from entering sewers, collect contaminated water for proper disposal.
Personal Precautions: Evacuate area, ventilate space, avoid breathing vapor, mist, or dust, wear full protective gear including respiratory protection
Environmental Precautions: Prevent discharge into waterways, drains, or soil, notify authorities if significant quantities released
Spill & Cleanup Methods: Absorb with inert material such as dry sand or earth, do not use water, collect in suitable container for disposal, decontaminate area with soda ash solution or other neutralizer, rinse clean equipment thoroughly under supervision, follow hazardous waste regulations.
Handling: Work under fume hood, avoid direct contact or inhalation, use non-sparking tools, wash hands and face thoroughly after handling, keep incompatible materials away
Storage: Store in tightly closed containers, keep in a cool, dry, well-ventilated place away from alkaline substances, water, moisture, and organic materials, secure area against unauthorized access, clearly label containers, check for leaks and container integrity regularly.
Exposure Limits: OSHA PEL for Chrome(VI) Compounds (as Cr): 0.005 mg/m3 (TWA); ACGIH TLV: 0.05 mg/m3 (as Cr)
Engineering Controls: Chemical fume hood is essential, use closed systems for bulk handling, showers and eye wash fountain at worksite
Respiratory Protection: Wear approved respirator if concentrations exceed recommended limits; full-face or supplied-air respirators may be needed
Skin Protection: Wear chemical-resistant gloves (nitrile, neoprene), long-sleeved garments, lab coat, impermeable apron
Eye Protection: Chemical splash goggles and full-face shield
Other Protection: Remove contaminated clothing immediately, avoid eating/drinking/smoking near work area, maintain strict hygiene, keep emergency washing facilities within reach.
Appearance: Deep red, fuming liquid with pungent, suffocating odor
Molecular Weight: 154.90 g/mol
Odor: Penetrating, irritating, chlorine-like
Melting Point: -96 °C
Boiling Point: 117 °C
Density: 1.91 g/cm3 at 25°C
Solubility: Decomposes in water with evolution of heat, forms hydrochloric acid and chromic acid
Vapor Pressure: 13 mmHg at 20°C
Partition Coefficient: Not available
Evaporation Rate: Not determined
Viscosity: Not available.
Stability: Stable in tightly sealed containers under recommended storage; hydrolyzes rapidly with water
Reactivity: Reacts violently with water and moisture to release hydrogen chloride gas and form chromic acid
Incompatible Materials: Water, ethanol, organic solvents, strong alkalis, combustible materials, reducing agents
Hazardous Decomposition: Hydrogen chloride gas, chromium oxides, possible formation of explosive mixtures with organic chemicals or metals
Polymerization: Does not undergo hazardous polymerization under normal conditions.
Routes of Exposure: Inhalation, skin, eyes, ingestion
Acute Toxicity: High toxicity by all routes, LC50 (rats, inhalation): 128 mg/m3 (4h); LD50 (oral, rats): approximately 70 mg/kg
Chronic Effects: Carcinogenic to humans (IARC 1), may cause genetic defects, reproductive toxicity, damage to kidneys, liver, respiratory tract
Symptoms: Burning of skin, eyes, throat, cough, chest pain, shortness of breath, delayed pulmonary edema, ulceration on skin, nosebleeds on inhalation
Other Health Hazards: Sensitization possible with repeated/excessive exposure, can aggravate pre-existing conditions, especially asthma or skin disorders.
Aquatic Toxicity: Very toxic to aquatic life, chromium(VI) compounds are highly persistent, cause long-term damage in aquatic environments, LC50 (fish): 0.5 mg/L (96h) (estimated)
Environmental Fate: Persists in soil and water, chromium(VI) highly mobile and bioaccumulative in some species
Other Hazards: Chromium(VI) compounds bioaccumulate and damage aquatic organisms and microorganisms, can contaminate potable water supplies, toxic to plants
Precautions: Prevent uncontrolled environmental releases, follow all regulations for chemical containment.
Waste Disposal: Hand over material and container to a licensed hazardous waste disposer, chemical may require special treatment and neutralization before disposal
Contaminated Packaging: Triple rinse, puncture, label as hazardous, send to chemical waste specialist
Disposal Restrictions: Do not flush to sewer, do not discharge to environment, incineration in approved facility recommended, comply with local/state/federal hazardous waste statutes
Additional Advice: Store waste securely until proper disposal.
UN Number: UN 1758
UN Proper Shipping Name: Chromyl Chloride
Transport Hazard Class: 6.1 (Toxic), 8 (Corrosive)
Packing Group: I (Great danger)
Labeling Requirements: Toxic, Corrosive
Environmental Hazards: Dangerous for environment, marine pollutant
Special Transport Precautions: Transport only in authorized containers, separate from incompatible goods, carry emergency spill materials on vehicle, comply with all national and international transport codes.
OSHA: Listed as hazardous, subject to Process Safety Management rule
EPA: Listed as hazardous waste (D007, U044), subject to SARA Title III, CERCLA reporting
IARC: Group 1 Carcinogen (carcinogenic to humans)
TSCA: Listed in the Toxic Substances Control Act inventory
Other Regulatory Considerations: Subject to Right-to-Know laws in some states, significant reporting may be required, restricted or prohibited in consumer products, international transport subject to ADR/RID, IMDG, IATA guidelines.
