Name:
Lead chromate
Synonym:
Chromic acid, lead(2+) salt; Chrome green; Chrome yellow
CAS:
7758-97-6
Section 1 - Chemical Product
MSDS Name:Lead chromate
Synonym:Chromic acid, lead(2+) salt; Chrome green; Chrome yellow
Synonym:Chromic acid, lead(2+) salt; Chrome green; Chrome yellow
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7758-97-6 | Lead chromate | 100 | 231-846-0 |
| Hazard Symbols: T N Risk Phrases: 33 40 61 62 50/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Danger of cumulative effects. Limited evidence of a carcinogenic effect. May cause harm to the unborn child. Possible risk of impaired fertility. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Dangerous for the environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
Causes respiratory tract irritation. May cause effects similar to those described for ingestion.
Chronic:
May cause cancer in humans. Repeated exposure may cause sensitization dermatitis. Chronic exposure to lead may result in plumbism which is characterized by lead line in gum, headache, muscle weakness, mental changes. Laboratory experiments have resulted in mutagenic effects. Lead salts have been reported to cross the placenta and induce embryo- and feto- mortality.
Danger of cumulative effects. Limited evidence of a carcinogenic effect. May cause harm to the unborn child. Possible risk of impaired fertility. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Dangerous for the environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
Causes respiratory tract irritation. May cause effects similar to those described for ingestion.
Chronic:
May cause cancer in humans. Repeated exposure may cause sensitization dermatitis. Chronic exposure to lead may result in plumbism which is characterized by lead line in gum, headache, muscle weakness, mental changes. Laboratory experiments have resulted in mutagenic effects. Lead salts have been reported to cross the placenta and induce embryo- and feto- mortality.
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.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
Ingestion:
Do not 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.
Inhalation:
Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Notes to Physician:
Persons with asthma, allergies, and know sensitization to chromic acid or chromates may be at increased risk from exposure to this product. Treat symptomatically and supportively.
Antidote: The use of d-Penicillamine as a chelating agent should be determined by qualified medical personnel. The use of Calcium disodium EDTA as a chelating agent should be determined by qualified medical personnel.
The use of Dimercaprol or BAL (British Anti-Lewisite) as a chelating agent should be determined by qualified medical personnel.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
Ingestion:
Do not 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.
Inhalation:
Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Notes to Physician:
Persons with asthma, allergies, and know sensitization to chromic acid or chromates may be at increased risk from exposure to this product. Treat symptomatically and supportively.
Antidote: The use of d-Penicillamine as a chelating agent should be determined by qualified medical personnel. The use of Calcium disodium EDTA as a chelating agent should be determined by qualified medical personnel.
The use of Dimercaprol or BAL (British Anti-Lewisite) as a chelating agent should be determined by qualified medical personnel.
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. Combustion generates toxic fumes. Oxidizer. Greatly increases the burning rate of combustible materials. May accelerate burning if involved in a fire.
Extinguishing Media:
Use water only! Cool containers with flooding quantities of water until well after fire is out. For large fires, flood fire area with water from a distance. Do NOT use dry chemicals, CO2, Halon or foams.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Oxidizer. Greatly increases the burning rate of combustible materials. May accelerate burning if involved in a fire.
Extinguishing Media:
Use water only! Cool containers with flooding quantities of water until well after fire is out. For large fires, flood fire area with water from a distance. Do NOT use dry chemicals, CO2, Halon or foams.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Avoid generating dusty conditions. Provide ventilation. With a clean shovel, carefully pick up the material and place it into a clean dry container and cover for disposal. Keep combustibles (wood, paper, oil, etc.,) away from spilled material.
Spills/Leaks:
Avoid generating dusty conditions. Provide ventilation. With a clean shovel, carefully pick up the material and place it into a clean dry container and cover for disposal. Keep combustibles (wood, paper, oil, etc.,) away from spilled material.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. Keep from contact with clothing and other combustible materials. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. Keep from contact with clothing and other combustible materials. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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.
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 general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 7758-97-6: United Kingdom, WEL - TWA: (listed as lead compounds): 0.15 mg/m3 (as Pb) United Kingdom, WEL - STEL: (listed as lead compounds): 0.45 mg/m TWA (as Pb) United States OSHA: 1 mg/m3 TWA (as Cr) (listed under Chromium insoluble salts).0.1 mg/m3 Ceiling (listed under Chromates).50 ?? TWA (as Pb); 30 ??g/m3 Action Level (as Pb. Poison - see 29 CFR 1910.10 25) (listed under Lead, inorganic compounds).
Belgium - TWA: 0.012 mg/m3 VLE (as Cr); 0.05 mg/m3 VLE (as Pb) France - VME: (listed as lead compounds): 0.1 mg/m3 VME (as Pb) Germany: (listed as lead compounds): 0.1 mg/m3 VME (as Pb) Japan: (listed as lead compounds): 0.1 mg/m3 OEL (except alkyl le compounds, as Pb) Malaysia: 0.05 mg/m3 TWA (as Pb); 0.012 mg/m3 TWA (as Cr) Netherlands: 1 ppm STEL (as Cr); 0.025 mg/m3 STEL (as Cr) Netherlands: (listed as lead, inorganic compounds): 0.15 mg/m3 MA (dust and smoke, as Pb) Russia: (listed as lead, inorganic compounds): 0.5 mg/m3 TWA (as Spain: 0.012 mg/m3 VLA-ED (as Cr); 0.05 mg/m3 VLA-ED (as Pb) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 7758-97-6: United Kingdom, WEL - TWA: (listed as lead compounds): 0.15 mg/m3 (as Pb) United Kingdom, WEL - STEL: (listed as lead compounds): 0.45 mg/m TWA (as Pb) United States OSHA: 1 mg/m3 TWA (as Cr) (listed under Chromium insoluble salts).0.1 mg/m3 Ceiling (listed under Chromates).50 ?? TWA (as Pb); 30 ??g/m3 Action Level (as Pb. Poison - see 29 CFR 1910.10 25) (listed under Lead, inorganic compounds).
Belgium - TWA: 0.012 mg/m3 VLE (as Cr); 0.05 mg/m3 VLE (as Pb) France - VME: (listed as lead compounds): 0.1 mg/m3 VME (as Pb) Germany: (listed as lead compounds): 0.1 mg/m3 VME (as Pb) Japan: (listed as lead compounds): 0.1 mg/m3 OEL (except alkyl le compounds, as Pb) Malaysia: 0.05 mg/m3 TWA (as Pb); 0.012 mg/m3 TWA (as Cr) Netherlands: 1 ppm STEL (as Cr); 0.025 mg/m3 STEL (as Cr) Netherlands: (listed as lead, inorganic compounds): 0.15 mg/m3 MA (dust and smoke, as Pb) Russia: (listed as lead, inorganic compounds): 0.5 mg/m3 TWA (as Spain: 0.012 mg/m3 VLA-ED (as Cr); 0.05 mg/m3 VLA-ED (as Pb) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: yellow to yellow-orange
Odor: none reported
pH: Not available.
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: decomposition
Freezing/Melting Point: 844 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Insoluble.
Specific Gravity/Density: 6.123
Molecular Formula: PbCrO4
Molecular Weight: 323.1936
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, excess heat.
Incompatibilities with Other Materials:
Reducing agents, active metals, hydrazine, potassium, hydrogen peroxide, sodium, azodye stuffs (e.g. dinitroaniline orange and chlorinated para red), aluminum + dinitronaphthalene, sulfur tantalum, iron (III) hexacyanoferrate (4-).
Hazardous Decomposition Products:
Irritating and toxic fumes and gases, lead/lead oxides.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, excess heat.
Incompatibilities with Other Materials:
Reducing agents, active metals, hydrazine, potassium, hydrogen peroxide, sodium, azodye stuffs (e.g. dinitroaniline orange and chlorinated para red), aluminum + dinitronaphthalene, sulfur tantalum, iron (III) hexacyanoferrate (4-).
Hazardous Decomposition Products:
Irritating and toxic fumes and gases, lead/lead oxides.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7758-97-6: GB2975000 LD50/LC50:
CAS# 7758-97-6: Oral, mouse: LD50 = >12 gm/kg.
Carcinogenicity:
Lead chromate - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to California: carcinogen, initial date 2/27/87 (listed as Chromium (VI) NTP: Suspect carcinogen (listed as Lead compounds).
IARC: Group 1 carcinogen (listed as Chromium (VI) compounds).
Other:
See actual entry in RTECS for complete information.
CAS# 7758-97-6: GB2975000 LD50/LC50:
CAS# 7758-97-6: Oral, mouse: LD50 = >12 gm/kg.
Carcinogenicity:
Lead chromate - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to California: carcinogen, initial date 2/27/87 (listed as Chromium (VI) NTP: Suspect carcinogen (listed as Lead compounds).
IARC: Group 1 carcinogen (listed as Chromium (VI) compounds).
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Chromium in soil can be transported to the atmosphere by way of aerosol formation. Chromium is also transported from soil through runoff and leaching of water. Runoff could remove both chromium ions and bulk precipitates of chromium, with final deposition on either a different land area or a water body. Leaching of lead can be relatively rapid from some soils, especially at highly contaminated sites or landfills.
Chromium in soil can be transported to the atmosphere by way of aerosol formation. Chromium is also transported from soil through runoff and leaching of water. Runoff could remove both chromium ions and bulk precipitates of chromium, with final deposition on either a different land area or a water body. Leaching of lead can be relatively rapid from some soils, especially at highly contaminated sites or landfills.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
No information available.
IMO
No information available.
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T N
Risk Phrases:
R 61 May cause harm to the unborn child.
R 33 Danger of cumulative effects.
R 40 Limited evidence of a carcinogenic effect.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
R 62 Possible risk of impaired fertility.
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# 7758-97-6: No information available.
Canada
CAS# 7758-97-6 is listed on Canadas DSL List.
CAS# 7758-97-6 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7758-97-6 is listed on the TSCA inventory.
