Name:
Potassium dichromate - custom grade P.A.
Synonym:
CAS:
7778-50-9
Section 1 - Chemical Product
MSDS Name:Potassium dichromate - custom grade P.A.
Synonym:
Synonym:
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7778-50-9 | Potassium dichromate | 231-906-6 |
| Hazard Symbols: T+ N Risk Phrases: 21 25 26 37/38 41 43 46 49 50/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Harmful in contact with skin. Toxic if swallowed. Very toxic by inhalation. Irritating to respiratory system and skin. Risk of serious damage to eyes. May cause sensitization by skin contact. May cause heritable genetic damage. May cause cancer by inhalation. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns. May cause redness, pain, blurred vision and possible eye damage.
Skin:
Causes skin irritation. Harmful if absorbed through the skin. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
Poison by ingestion. May cause kidney damage. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
Inhalation:
Causes respiratory tract irritation. May cause allergic respiratory reaction. May cause liver and kidney damage. May cause ulceration and perforation of the nasal septum if inhaled in excessive quantities. Excessive inhalation may cause minor respiratory irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Toxic if inhaled. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.
Chronic:
Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration. May cause respiratory tract cancer. May cause liver and kidney damage. Chronic inhalation may cause nasal septum ulceration and perforation. May alter genetic material.
Harmful in contact with skin. Toxic if swallowed. Very toxic by inhalation. Irritating to respiratory system and skin. Risk of serious damage to eyes. May cause sensitization by skin contact. May cause heritable genetic damage. May cause cancer by inhalation. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns. May cause redness, pain, blurred vision and possible eye damage.
Skin:
Causes skin irritation. Harmful if absorbed through the skin. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
Poison by ingestion. May cause kidney damage. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
Inhalation:
Causes respiratory tract irritation. May cause allergic respiratory reaction. May cause liver and kidney damage. May cause ulceration and perforation of the nasal septum if inhaled in excessive quantities. Excessive inhalation may cause minor respiratory irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Toxic if inhaled. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.
Chronic:
Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration. May cause respiratory tract cancer. May cause liver and kidney damage. Chronic inhalation may cause nasal septum ulceration and perforation. May alter genetic material.
Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Treat symptomatically and supportively.
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with other material may cause fire. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with other material may cause fire. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Avoid runoff into storm sewers and ditches which lead to waterways.
Avoid generating dusty conditions. Carefully scoop up and place into appropriate disposal container.
Spills/Leaks:
Avoid runoff into storm sewers and ditches which lead to waterways.
Avoid generating dusty conditions. Carefully scoop up and place into appropriate disposal container.
Section 7 - HANDLING and STORAGE
Handling:
Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Avoid contact with clothing and other combustible materials. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from reducing agents.
Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Avoid contact with clothing and other combustible materials. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from reducing agents.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: orange-red
Odor: odorless
pH: 4 (5% aq.sol.)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 500 deg C
Freezing/Melting Point: 398 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: >500 deg C
Solubility in water: 125 g/l (20C)
Specific Gravity/Density: Not available.
Molecular Formula: K2Cr2O7
Molecular Weight: 294.19
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, combustible materials, organic materials.
Incompatibilities with Other Materials:
Acetic anhydride, hydrazine, hydroxylamine, reducing agents, acids, strong bases, nitric acid, oils, hydrochloric acid.
Hazardous Decomposition Products:
Oxygen, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, combustible materials, organic materials.
Incompatibilities with Other Materials:
Acetic anhydride, hydrazine, hydroxylamine, reducing agents, acids, strong bases, nitric acid, oils, hydrochloric acid.
Hazardous Decomposition Products:
Oxygen, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7778-50-9: HX7680000 LD50/LC50:
CAS# 7778-50-9: Draize test, rabbit, eye: 140 mg Severe; Oral, mouse: LD50 = 190 mg/kg; Oral, rat: LD50 = 25 mg/kg; Skin, rabbit: LD50 = 14 mg/kg.
Carcinogenicity:
Potassium dichromate - California: carcinogen, initial date 2/27/87 (listed as Chromium (VI) NTP: Known carcinogen (listed as Chromium (VI) compounds).
IARC: Group 1 carcinogen (listed as Chromium (VI) compounds).
Other:
See actual entry in RTECS for complete information.
CAS# 7778-50-9: HX7680000 LD50/LC50:
CAS# 7778-50-9: Draize test, rabbit, eye: 140 mg Severe; Oral, mouse: LD50 = 190 mg/kg; Oral, rat: LD50 = 25 mg/kg; Skin, rabbit: LD50 = 14 mg/kg.
Carcinogenicity:
Potassium dichromate - California: carcinogen, initial date 2/27/87 (listed as Chromium (VI) NTP: Known carcinogen (listed as Chromium (VI) compounds).
IARC: Group 1 carcinogen (listed as Chromium (VI) compounds).
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Fish: Gold orfe: 29.4 g/LFish: Gold orfe: 29.4 g/L; LC0Fish: Fathead Minnow: 29.4 g/L; 96 H; LC50Fish: Mosquito Fish: 29.4 g/L; 48H; LC50Water flea 29.4 g/L; 24H; EC50 (immobilization)
Fish: Gold orfe: 29.4 g/LFish: Gold orfe: 29.4 g/L; LC0Fish: Fathead Minnow: 29.4 g/L; 96 H; LC50Fish: Mosquito Fish: 29.4 g/L; 48H; LC50Water flea 29.4 g/L; 24H; EC50 (immobilization)
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: TOXIC SOLID, INORGANIC, N.O.S.*
Hazard Class: 6.1
UN Number: 3288
Packing Group: II
IMO
Shipping Name: TOXIC SOLID, INORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 3288
Packing Group: II
RID/ADR
Shipping Name: TOXIC SOLID, INORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 3288
Packing group: II
USA RQ:CAS# 7778-50-9: 10 lb final RQ; 4.54 kg final RQ
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ N
Risk Phrases:
R 46 May cause heritable genetic damage.
R 49 May cause cancer by inhalation.
R 21 Harmful in contact with skin.
R 25 Toxic if swallowed.
R 26 Very toxic by inhalation.
R 37/38 Irritating to respiratory system and skin.
R 41 Risk of serious damage to eyes.
R 43 May cause sensitization by skin contact.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 53 Avoid exposure - obtain special instructions
before use.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7778-50-9: 3
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
CAS# 7778-50-9: MEL-United Kingdom, TWA (listed as ** undefined
**): 0.05 mg/m3 TWA (as Cr)
Canada
CAS# 7778-50-9 is listed on Canadas DSL List.
CAS# 7778-50-9 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7778-50-9: Not available.
US FEDERAL
TSCA
CAS# 7778-50-9 is listed on the TSCA inventory.
