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CAS Number: 7778-50-9
Product Catalog
93-1918
Potassium › Potassium dichromate, 99+% (ACS)| CAS Number: | 7778-50-9 |
| MDL Number: | MFCD00011367 |
| Molecular Formula: | Cr2K2O7 |
| Molecular Weight: | 294.19 |
| Chemical Formula: | K2Cr2O7 |
| Color and Form: | orange xtl. |
| Note: |
Safety: Hazardous
Physical Characteristics: boiling point 500°C dec., density 2.676
| SECTION 1: Product Identification | |
|---|---|
| Chemical Name: | Potassium dichromate, 99+% (ACS) |
| Product Number: | 93-1918 |
| CAS Registry Number: | 7778-50-9 |
| Formula: | K2Cr2O7 |
| EINECS Number: | 231-906-6 |
| Chemical Family: | chromate and dichromate salts |
| Synonym: | Bichromate of potash, Potassium bichromate |
| SECTION 2: Composition and Information on Ingredients | ||||
|---|---|---|---|---|
| Ingredient | CAS Number | Percent | ACGIH (TWA) | OSHA (PEL) |
| Title Compound | 7778-50-9 | 100 | 0.05mg/m3 | 1mg/10m3 |
| SECTION 3: Hazards Identification | |
|---|---|
| Emergency Overview: | Irritating to skin, eyes and mucous membranes of the nose and mouth. Cancer hazard. |
| Primary Routes of Exposure: | Ingestion, inhalation, skin |
| Eye Contact: | Irritating to the eyes. |
| Skin Contact: | Irritating to the skin. |
| Inhalation: | Causes inflammation and ulceration of the respiratory tract. |
| Ingestion: | Ingestion may lead to dizziness, abdominal cramps, vomiting, bloody diarrhea, weakness, shock, and convulsions. |
| Acute Health Effects: | Irritating and toxic to skin, eyes and respiratory tract and when ingested. Contact with breaks in the skin can cause ulceration. |
| Chronic Health Effects: | Cancer hazard. May cause dermatitis, ulceration of the respiratory and gastrointestinal tract, acute hepatitis, erosion and discoloration of the teeth. Possible reproductive hazard. |
| NTP: | yes |
| IARC: | yes |
| OSHA: | No |
| SECTION 4: First Aid Measures | |
|---|---|
| Eye Exposure: | Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need assistance in keeping their eye lids open. Get immediate medical attention. |
| Skin Exposure: | Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if irritation persists. |
| Inhalation: | Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance. |
| Ingestion: | Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce vomiting only if directed by medical personnel. |
| SECTION 5: Fire Fighting Measures | |
|---|---|
| Flash Point: | not applicable |
| Autoignition Temperature: | none |
| Explosion Limits: | none |
| Extinguishing Medium: | water, carbon dioxide, foam or dry powder |
| Special Fire Fighting Procedures: | If involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure self-contained breathing apparatus and full protective clothing. |
| Hazardous Combustion and Decomposion Products: | If involved in a fire this material may emit toxic fumes of chromium oxides. |
| Unusual Fire or Explosion Hazards: | Strong oxidizer. May accelerate combustion of organics. |
| SECTION 6: Accidental Release Measures | |
|---|---|
| Spill and Leak Procedures: | Small spills can be mixed with vermiculite or sodium carbonate and swept up. |
| SECTION 7: Handling and Storage | |
|---|---|
| Handling and Storage: | Store in a sealed container. Keep away from heat, moisture, and direct sunlight. |
| SECTION 8: Exposure Controls and Personal Protection | |
|---|---|
| Eye Protection: | Always wear approved safety glasses when handling a chemical substance in the laboratory. |
| Skin Protection: | Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove. |
| Ventilation: | Material may form a fine dust. If possible, handle the material in an efficient fume hood. |
| Respirator: | If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134. |
| Additional Protection: | No additional protection required. |
| SECTION 9: Physical and Chemical Properties | |
|---|---|
| Color and Form: | orange xtl. |
| Molecular Weight: | 294.19 |
| Melting Point: | 390°C |
| Boiling Point: | 500°C dec. |
| Vapor Pressure: | not applicable |
| Specific Gravity: | 2.676 |
| Odor: | none |
| Solubility in Water: | soluble |
| SECTION 10: Stability and Reactivity | |
|---|---|
| Stability: | air and moisture stable |
| Hazardous Polymerization: | no hazardous polymerization |
| Conditions to Avoid: | Contact with organics. Use good housekeeping practice to avoid accumulation of dust in work area. |
| Incompatibility: | Organic matter, reducing agents, sulfur, phosphorus and active metals |
| Decomposition Products: | none |
| SECTION 11: Toxicological Information | |
|---|---|
| RTECS Data: | Oral (human-child); LDLo: 26 mg/kg. Oral (rat); LD50: 25 mg/kg. Intraperitoneal (rat); LD50: 28 mg/kg. Oral (mouse); LD50: 190 mg/kg. Intraperitoneal (mouse); LD50: 37 mg/kg. Subcutaneous (mouse); LDLo: 100 mg/kg. Oral (dog); LDLo: 2829 mg/kg. Subcutaneous (monkey); LDLo: 40 mg/kg. Administration onto the skin (rabbit); LD50: 14 mg/kg. Oral (rat); TDLo: 56680 ug/kg/20D-I. Intraperitoneal (rat); TDLo: 22500 ug/kg/12W-I. Subcut (rbt) LDLo: 10 mg/kg. Human Lymphocyte; Micronucleus test: 300 ug/L. Human Fibroblast; Morphological transformation: 200 nmol/L. Human lung; DNA damage: 10 umol/L. Human Fibroblast; DNA inhibition: 100 umol/L. |
| Carcinogenic Effects: | Cancer suspect agent |
| Mutagenic Effects: | Mutagen |
| Tetratogenic Effects: | Reproductive Effector |
| SECTION 12: Ecological Information | |
|---|---|
| Ecological Information: | Keep away from waterways and ground water. |
| SECTION 13: Disposal Considerations | |
|---|---|
| Disposal: | Dispose of according to local, state and federal regulations. |
| SECTION 14: Transportation | |
|---|---|
| Shipping Name (CFR): | Toxic Solids, Oxidizing, N.O.S. |
| Hazard Class (CFR): | 6.1 |
| Additional Hazard Class (CFR): | 5.1 |
| Packaging Group (CFR): | I |
| UN ID Number (CFR): | UN# 3086 |
| Shipping Name (IATA): | Toxic Solid, Oxidizing, N.O.S. |
| Hazard Class (IATA): | 6.1 |
| Additional Hazard Class (IATA): | 5.1 |
| Packaging Group (IATA): | I |
| UN ID Number (IATA): | UN# 3086 |
| SECTION 15: Regulatory Information | |
|---|---|
| TSCA: | Listed in the TSCA inventory. |
| SARA (Title 313): | Reportable under SARA 313. |
| Second Ingredient: | none |
| Third Ingredient: | none |
| SECTION 16: Other Information | |
|---|---|
| Disclaimer: | The information herein is believed to be accurate and reliable as of the date compiled. However, Strem Chemicals, Inc. makes no representation, warranty, or guarantee of any kind with respect to the information contained in this document or any use of the product based on this information. |
| Preparation Date: | 1/11/2001 |
| Revision Date: | 8/02/2011 |
