**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 7789-12-0 |Sodium dichromate dihydrate | 99 | unlisted |
|----------------|--------------------------------------|----------|-----------|
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
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.
**** 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.
**** 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.
**** 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.
**** 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.
**** 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.
**** 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.
**** 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.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Ecotoxicity:
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 Canada's DSL List.
CAS# 7789-12-0 is not listed on Canada's Ingredient Disclosure List.
CAS# 10588-01-9 is listed on Canada's 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.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 10/29/1998 Revision #4 Date: 6/10/2003
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 way shall the company 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 the company has been advised of
the possibility of such damages.
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