Name:
Sodium dichromate dihydrate 99%
Synonym:
Sodium bichromat
CAS:
7789-12-0
Section 1 - Chemical Product
MSDS Name:Sodium dichromate dihydrate 99%
Synonym:Sodium bichromat
Synonym:Sodium bichromat
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7789-12-0 | Sodium dichromate dihydrate | 99 | unlisted |
| 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. Prolonged or repeated exposure may lead to asthma and perforation of the nasal septum. 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. Prolonged or repeated exposure may lead to asthma and perforation of the nasal septum. 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:
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:
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. Cool containers with flooding quantities of water until well after fire is out.
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. Cool containers with flooding quantities of water until well after fire is out.
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
Odor: odorless
pH: 3.5-3.9 (5% aq.sol.)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 400 deg C @760mmHg
Freezing/Melting Point: 357 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 400 deg C
Solubility in water: 1800 g/l water (20C)
Specific Gravity/Density:
Molecular Formula: Cr2Na2O7.2H2O
Molecular Weight: 298
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, combustible materials, organic materials.
Incompatibilities with Other Materials:
Water, oxidizing agents, reducing agents, acids, strong bases, acetic anhydride, anhydrides, hydrazine, hydroxylamine, iron, magnesium, nitric acid, oils, sulfuric acid, boron, hydrochloric acid, glycerol, metal powders, silicon, ethanol, 2-propanol.
Hazardous Decomposition Products:
Oxygen, sodium oxide, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, combustible materials, organic materials.
Incompatibilities with Other Materials:
Water, oxidizing agents, reducing agents, acids, strong bases, acetic anhydride, anhydrides, hydrazine, hydroxylamine, iron, magnesium, nitric acid, oils, sulfuric acid, boron, hydrochloric acid, glycerol, metal powders, silicon, ethanol, 2-propanol.
Hazardous Decomposition Products:
Oxygen, sodium oxide, toxic chromium oxide fumes.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7789-12-0: HX7750000 CAS# 10588-01-9: HX7700000 HX7720000 LD50/LC50:
Not available.
CAS# 10588-01-9: Oral, rat: LD50 = 50 mg/kg.
Carcinogenicity:
Sodium dichromate dihydrate - 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).
Sodium dichromate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 7789-12-0: HX7750000 CAS# 10588-01-9: HX7700000 HX7720000 LD50/LC50:
Not available.
CAS# 10588-01-9: Oral, rat: LD50 = 50 mg/kg.
Carcinogenicity:
Sodium dichromate dihydrate - 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).
Sodium dichromate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Fish: Fathead Minnow: TLm = 419 ppm; 96 H; LC50Fish: Bluegill/Sunfish: TLm = 419 ppm; 96H; LC50
Fish: Fathead Minnow: TLm = 419 ppm; 96 H; LC50Fish: Bluegill/Sunfish: TLm = 419 ppm; 96H; LC50
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: OXIDIZING SOLID, TOXIC, N.O.S.
Hazard Class: 5.1
UN Number: 3087
Packing Group: III
IMO
Shipping Name: OXIDIZING SOLID, TOXIC, N.O.S.
Hazard Class: 5.1
UN Number: 3087
Packing Group: III
RID/ADR
Shipping Name: OXIDIZING SOLID, TOXIC, N.O.S.
Hazard Class: 5.1
UN Number: 3087
Packing group: III
USA RQ:CAS# 10588-01-9: 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# 7789-12-0: No information available.
CAS# 10588-01-9: 3
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
CAS# 7789-12-0: MEL-United Kingdom, TWA (listed as ** undefined
**): 0.05 mg/m3 TWA (as Cr)
Canada
CAS# 10588-01-9 is listed on Canadas DSL List.
CAS# 7789-12-0 is not listed on Canadas Ingredient Disclosure List.
CAS# 10588-01-9 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7789-12-0: Not available.
US FEDERAL
TSCA
CAS# 7789-12-0 is not on the TSCA Inventory because it is a hydrate.
It is considered to be listed if the CAS number for the anhydrous form
is on the inventory (40CFR720.3(u)(2)).
CAS# 10588-01-9 is listed on the TSCA inventory.
