Material Safety Data Sheet
Ammonium dichromate

ACC# 01210
Section 1 - Chemical Product and Company Identification

MSDS Name: Ammonium dichromate
Catalog Numbers: AC208810000, AC208815000, S70636, S75026, S75027, A644-100, A644-212, A644-500, S70636-1
Synonyms:
Ammonium bichromate; Ammonium dichromate(VI).
Company Identification:

              Fisher Scientific
              1 Reagent Lane
              Fair Lawn, NJ 07410
For information, call:
201-796-7100
Emergency Number:
201-796-7100
For CHEMTREC assistance, call:
800-424-9300
For International CHEMTREC assistance, call:
703-527-3887

Section 2 - Composition, Information on Ingredients

CAS# Chemical Name Percent EINECS/ELINCS
7789-09-5 Ammonium dichromate 99 232-143-1

Section 3 - Hazards Identification

EMERGENCY OVERVIEW

Appearance: orange to red crystals.
Danger! Strong oxidizer. Contact with other material may cause a fire. May be fatal if inhaled. May become explosive when allowed to dry out. Harmful if swallowed. May cause severe eye irritation and possible injury. Causes skin and respiratory tract irritation. May cause allergic skin reaction. May be harmful if absorbed through the skin. Cancer suspect agent. May cause liver and kidney damage.
Target Organs: Kidneys, liver, respiratory system, eyes, skin.


Potential Health Effects
Eye: May cause severe eye irritation and possible injury.
Skin: Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May be harmful if absorbed through the skin. 4-hour exposure to solid material showed no corrosion but well-defined erythema in 2/6 animals. Solid material moistened with physiological saline produced well-defined erythema and edema in all 6 animals, 2 of which showed necrotic focal sites. (Bayer)
Ingestion: Harmful if swallowed.
Inhalation: May be fatal if inhaled. Causes respiratory tract irritation.
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 liver and kidney damage. May cause cancer in humans.

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 imme diately. Do NOT allow victim to rub eyes or keep eyes closed. Extensiv e 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 other material may cause 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.
Flash Point: Not available.
Autoignition Temperature: 225 deg C ( 437.00 deg F)
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating: (estimated) Health: 3; Flammability: 1; Instability: 1; Special Hazard: OX

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.

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.

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.
Exposure Limits
Chemical Name ACGIH NIOSH OSHA - Final PELs
Ammonium dichromate 0.05 mg/m3 TWA (as Cr) (listed under Chromium (VI) compounds- water soluble). 0.001 mg/m3 TWA (as Cr) (listed under Chromates).15 mg/m3 IDLH (as Cr(VI)) (listed under Chromates). 0.1 mg/m3 Ceiling (listed under Chromates).

OSHA Vacated PELs: Ammonium dichromate: No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's 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 OSHA's 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
Appearance: orange to red
Odor: odorless
pH: 3.45 for 10% soln.
Vapor Pressure: Not available.
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point:170 deg C (dec)
Decomposition Temperature:170 deg C
Solubility: 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: Ignition sources, dust generation, excess heat.
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, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.

Section 11 - Toxicological Information


RTECS#:      
CAS# 7789-09-5: HX7650000; HX7660000
LD50/LC50:
Not available.
Oral, rat: LD50 = 67.5 mg/kg. ation, rat: LC50 = 0.156 mg/l/4H. l, rabbit: LD50 = 1640 mg/kg. rted by Bayer)
Carcinogenicity:
CAS# 7789-09-5:


Epidemiology: Certain hexavalent chromium compounds have been demonstrated to be carcinogenic on the basis of epidemiological investigations on workers and experimental studies in animals.Hexavalent chromium compounds have been said to also cause kidney damage in workers where absorption through damaged skin has occurred.
Teratogenicity: No information found
Reproductive Effects: No information found
Mutagenicity: DNA Repair: Salmonella typhimurium = 50 mmol/L.; DNA Repair: Bacillus subtilis = 50 mmol/L.
Neurotoxicity: No information found
Other Studies:

Section 12 - Ecological Information


Ecotoxicity: Fish: Mosquito Fish: LC50 = 136 mg/L; 96 Hr; UnspecifiedFish: Mosquito Fish: LC50 = 212 mg/L; 48 Hr; Unspecified 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. 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.
Environmental: Most of the chromium in surface waters may be present in particulate form as sediment. Some of the particulate chromium would remain as suspended matter and ultimately be deposited in sediments. Trout can accumulate hexavalent chromium even at levels of 0.001 ppm. Barley absorbs chromium. Concentration factors for chromium: Marine plants 2000 times; freshwater and brown algae concentrate 100-500 times; Marine invertebrates 2000 times; Marine fish 400 times; and Freshwater fish 200 times.
Physical: No information available.
Other: No information available.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.

Section 14 - Transport Information

US DOT Canada TDG
Shipping Name: AMMONIUM DICHROMATE AMMONIUM DICHROMATE
Hazard Class: 5.1 5.1
UN Number: UN1439 UN1439
Packing Group: II II

Section 15 - Regulatory Information

US FEDERAL

TSCA
     CAS# 7789-09-5 is listed on the TSCA inventory.
Health & Safety Reporting List
     None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
     None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
     None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
     None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
     CAS# 7789-09-5: 10 lb final RQ; 4.54 kg final RQ
SARA Section 302 Extremely Hazardous Substances
     None of the chemicals in this product have a TPQ.
SARA Codes
     CAS # 7789-09-5: immediate, delayed, fire.
Section 313
     This material contains Ammonium dichromate (listed as Chromium (VI) compounds), 99%, (CAS# 7789-09-5) which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
     This material does not contain any hazardous air pollutants.
     This material does not contain any Class 1 Ozone depletors.
     This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
CAS# 7789-09-5 is listed as a Hazardous Substance under the CWA.
     None of the chemicals in this product are listed as Priority Pollutants under the CWA.
     None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
OSHA:
     None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
     CAS# 7789-09-5 can be found on the following state right to know lists: California, New Jersey, Pennsylvania, Minnesota, (listed as Chromium (VI) compounds- water soluble), Minnesota, (listed as Chromium (VI) compounds), Massachusetts.

California Prop 65
The following statement(s) is(are) made in order to comply with the California Safe Drinking Water Act:
WARNING: This product contains Ammonium dichromate, listed as `Chromium (VI) compounds', a chemical known to the state of California to cause cancer.
California No Significant Risk Level: None of the chemicals in this product are listed.

European/International Regulations

European Labeling in Accordance with EC Directives
Hazard Symbols:
     T+ N E
Risk Phrases:

     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 46 May cause heritable genetic damage.
     R 8 Contact with combustible material may cause fire.
     R 49 May cause cancer by inhalation.
     R 50/53 Very toxic to aquatic organisms, may cause long-term
     adverse effects in the aquatic environment.

Safety Phrases:

     S 45 In case of accident or if you feel unwell, seek medical advice
     immediately (show the label where possible).
     S 53 Avoid exposure - obtain special instructions before use.
     S 60 This material and its container must be disposed of as hazardou
     s waste.
     S 61 Avoid release to the environment. Refer to special instructions
     /safety data sheets.

WGK (Water Danger/Protection)

     CAS# 7789-09-5: 3
Canada - DSL/NDSL
     CAS# 7789-09-5 is listed on Canada's DSL List.
Canada - WHMIS
     This product has a WHMIS classification of C, F, D1A, D2A.
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
     CAS# 7789-09-5 is listed on the Canadian Ingredient Disclosure List.

Section 16 - Additional Information

MSDS Creation Date: 7/19/1999
Revision #3 Date: 3/04/2004

The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.