Name:
Ammonium dichromate 99%
Synonym:
Ammonium bichromate; Dichromic acid dimmonium salt; Ammonium dichromate (VI
CAS:
7789-09-5
Section 1 - Chemical Product
MSDS Name:Ammonium dichromate 99%
Synonym:Ammonium bichromate; Dichromic acid dimmonium salt; Ammonium dichromate (VI
Synonym:Ammonium bichromate; Dichromic acid dimmonium salt; Ammonium dichromate (VI
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7789-09-5 | Ammonium bichromate | 99 | 232-143-1 |
| Hazard Symbols: T+ N E Risk Phrases: 1 21 25 26 37/38 41 43 46 8 49 50/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Explosive when dry. 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. Contact with combustible material may cause fire. May cause cancer by inhalation.
Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Cancer suspect agent.Corrosive.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
Causes eye burns. May cause permanent corneal opacification.
Skin:
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
May cause deep, penetrating ulcers of the skin. May be absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause circulatory system failure. May cause perforation of the digestive tract. Methemoglobinemia is characterized by dizziness, drowsiness, headache, shortness of breath, cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), rapid heart rate and chocolate-brown colored blood. May cause hemolysis. May cause nausea, vomiting, and diarrhea, possibly with blood.
Inhalation:
Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause ulceration and perforation of the nasal septum if inhaled in excessive quantities. Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
Chronic:
Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation of the nasal septum, chest pain and bronchitis. Prolonged or repeated eye contact may cause conjunctivitis. Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration.
May cause cancer according to animal studies. Effects may be delayed.
Laboratory experiments have resulted in mutagenic effects.
Explosive when dry. 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. Contact with combustible material may cause fire. May cause cancer by inhalation.
Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Cancer suspect agent.Corrosive.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
Causes eye burns. May cause permanent corneal opacification.
Skin:
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
May cause deep, penetrating ulcers of the skin. May be absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause circulatory system failure. May cause perforation of the digestive tract. Methemoglobinemia is characterized by dizziness, drowsiness, headache, shortness of breath, cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), rapid heart rate and chocolate-brown colored blood. May cause hemolysis. May cause nausea, vomiting, and diarrhea, possibly with blood.
Inhalation:
Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause ulceration and perforation of the nasal septum if inhaled in excessive quantities. Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
Chronic:
Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation of the nasal septum, chest pain and bronchitis. Prolonged or repeated eye contact may cause conjunctivitis. Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration.
May cause cancer according to animal studies. Effects may be delayed.
Laboratory experiments have resulted in mutagenic effects.
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. Do NOT allow victim to rub eyes or keep eyes closed.
Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
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 immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. 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. Effects may be delayed. For methemoglobinemia, administer oxygen alone or with Methylene Blue depending on the methemoglobin concentration in the blood.
Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
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 immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. 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. Effects may be delayed. For methemoglobinemia, administer oxygen alone or with Methylene Blue depending on the methemoglobin concentration in the blood.
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 combustible materials may cause a fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water with caution and in flooding amounts. This material poses an explosion hazard when dry.
Extinguishing Media:
Use water only! Contact professional fire-fighters immediately. 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. Strong oxidizer. Contact with combustible materials may cause a fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water with caution and in flooding amounts. This material poses an explosion hazard when dry.
Extinguishing Media:
Use water only! Contact professional fire-fighters immediately. 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:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Wet area to prevent drying out.
Provide ventilation. Do not use combustible materials such as paper towels to clean up spill. Keep combustibles (wood, paper, oil, etc.,) away from spilled material.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Wet area to prevent drying out.
Provide ventilation. Do not use combustible materials such as paper towels to clean up spill. 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. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Do not ingest or inhale. Do not store near combustible materials. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store near combustible materials. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from acids. Keep away from reducing agents.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Do not ingest or inhale. Do not store near combustible materials. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store near combustible materials. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from acids. 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: 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 a respirators use.
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: 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 a respirators use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: orange to red
Odor: odorless
pH: 3.45 for 10% soln.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 170 deg C (dec)
Autoignition Temperature: 225 deg C ( 437.00 deg F)
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 170 deg C
Solubility in water: Soluble.
Specific Gravity/Density: 2.1500
Molecular Formula: (NH4)2Cr2O7
Molecular Weight: 252.06
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. However, may decompose if heated.
Conditions to Avoid:
Incompatible materials, ignition sources, dust generation, excess heat, combustible materials, reducing agents, strong acids.
Incompatibilities with Other Materials:
Reducing agents, strong acids, alcohols, aluminum, hydrazine, plastics, potassium chlorates, sodium nitrate, sulfur, combustible organics, carbides, wood.
Hazardous Decomposition Products:
Oxides of nitrogen, irritating and toxic fumes and gases, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Stable. However, may decompose if heated.
Conditions to Avoid:
Incompatible materials, ignition sources, dust generation, excess heat, combustible materials, reducing agents, strong acids.
Incompatibilities with Other Materials:
Reducing agents, strong acids, alcohols, aluminum, hydrazine, plastics, potassium chlorates, sodium nitrate, sulfur, combustible organics, carbides, wood.
Hazardous Decomposition Products:
Oxides of nitrogen, irritating and toxic fumes and gases, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7789-09-5: HX7650000 HX7660000 LD50/LC50:
Not available.
Carcinogenicity:
Ammonium bichromate - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
CAS# 7789-09-5: HX7650000 HX7660000 LD50/LC50:
Not available.
Carcinogenicity:
Ammonium bichromate - Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Fish: Mosquito Fish: LC50 = 136 mg/L; 96 Hr; UnspecifiedFish: Mosquito Fish: LC50 = 212 mg/L; 48 Hr; UnspecifiedChromium 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. Chromium is present usually as Cr(III) in the soil and is characterized by its lack of mobility, except in cases where Cr(VI) is involved. Chromium(VI) of natural origin is rarely found.
Fish: Mosquito Fish: LC50 = 136 mg/L; 96 Hr; UnspecifiedFish: Mosquito Fish: LC50 = 212 mg/L; 48 Hr; UnspecifiedChromium 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. Chromium is present usually as Cr(III) in the soil and is characterized by its lack of mobility, except in cases where Cr(VI) is involved. Chromium(VI) of natural origin is rarely found.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: AMMONIUM DICHROMATE
Hazard Class: 5.1
UN Number: 1439
Packing Group: II
IMO
Shipping Name: AMMONIUM DICHROMATE
Hazard Class: 5.1
UN Number: 1439
Packing Group: II
RID/ADR
Shipping Name: AMMONIUM DICHROMATE
Hazard Class: 5.1
UN Number: 1439
Packing group: II
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ N E
Risk Phrases:
R 46 May cause heritable genetic damage.
R 49 May cause cancer by inhalation.
R 1 Explosive when dry.
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.
R 8 Contact with combustible material may cause
fire.
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# 7789-09-5: 3
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 7789-09-5 is not listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7789-09-5 (listed as ** undefined **): OEL-ARAB Republic of Egypt
:TWA 0.05 mg/m3
OEL-AUSTRALIA:TWA 0.05 mg/m3
OEL-BELGIUM:TWA 0.5 mg/m3
OEL-DENMARK:TWA 0.5 mg/m3
OEL-FINLAND:TWA 0.01 mg/m3
OEL-FRANCE:TWA 0.5 mg/m3
OEL-JAPAN:TWA 0.5 mg/m3
OEL-THE NETHERLANDS:TWA 0.5 mg/m3
OEL-THE PHILIPPINES:TWA 1 mg/m3
OEL-SWEDEN:TWA 0.5 mg/m3
OEL-UNITED KINGDOM:TWA 0.5 mg/m3
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 7789-09-5 is not listed on the TSCA inventory.
It is for research and development use only.
