SODIUM DICHROMATE Page 1 of 9
SODIUM DICHROMATE
MSDS Number: S3506 --- Effective Date: 03/05/97
1. Product Identification
Synonyms: Sodium bichromate; sodium bichromate dihydrate; chromic acid, disodium
salt, dihydrate; Sodium Dichromate, Dihydrate
CAS No.: 10588-01-9
Molecular Weight: 298.0
Chemical Formula: Na2Cr2O7 2H2O
Product Codes: J.T. Baker: 3672, 3674 Mallinckrodt: 7420, 7424
2. Composition/Information on Ingredients
Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------- ---------
Sodium Dichromate 10588-01-9 99 - 100% Yes
3. Hazards Identification
Emergency Overview
--------------------------
DANGER! STRONG OXIDIZER. CONTACT WITH OTHER MATERIAL MAY
CAUSE A FIRE. CORROSIVE. CAUSES SEVERE BURNS TO EVERY AREA
OF CONTACT. MAY BE FATAL IF SWALLOWED. HARMFUL IF INHALED.
AFFECTS THE RESPIRATORY SYSTEM, LIVER, KIDNEYS, EYES, SKIN
AND BLOOD. MAY CAUSE ALLERGIC REACTION. CANCER HAZARD.
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CAN CAUSE CANCER. Risk of cancer depends on duration and level of exposure.
J.T. Baker SAF-T-DATA(tm) Ratings (Provided here for your convenience)
-----------------------------------------------------------------------------------------------------------
Health Rating: 4 - Extreme (Cancer Causing)
Flammability Rating: 0 - None
Reactivity Rating: 3 - Severe (Oxidizer)
Contact Rating: 3 - Severe (Life)
Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES
Storage Color Code: Yellow (Reactive)
-----------------------------------------------------------------------------------------------------------
Potential Health Effects
----------------------------------
Inhalation:
Corrosive. Extremely destructive to tissues of the mucous membranes and upper
respiratory tract. May cause ulceration and perforation of the nasal septum. Symptoms
may include sore throat, coughing, shortness of breath, and labored breathing. May
produce pulmonary sensitization or allergic asthma. Higher exposures may cause
pulmonary edema.
Ingestion:
Corrosive. Swallowing can cause severe burns of the mouth, throat, and stomach, leading
to death. Can cause sore throat, vomiting, diarrhea. May cause violent gastroenteritis,
peripheral vascular collapse, dizziness, intense thirst, muscle cramps, shock, coma,
abnormal bleeding, fever, liver damage and acute renal failure.
Skin Contact:
Corrosive. Symptoms of redness, pain, and severe burn can occur. Dusts and strong
solutions may cause severe irritation. Contact with broken skin may cause ulcers (chrome
sores) and absorption, which may cause systemic poisoning, affecting kidney and liver
functions. May cause skin sensitization.
Eye Contact:
Corrosive. Contact can cause blurred vision, redness, pain and severe tissue burns. May
cause corneal injury or blindness.
Chronic Exposure:
Repeated or prolonged exposure can cause ulceration and perforation of the nasal
septum, respiratory irritation, liver and kidney damage and ulceration of the skin.
Ulcerations at first may be painless, but may penetrate to the bone producing "chrome
holes." Known to be a human carcinogen.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders, asthma, allergies or known sensitization to
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chromic acid or chromates may be more susceptible to the effects of this material.
4. First Aid Measures
Inhalation:
Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical attention immediately.
Ingestion:
If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never
give anything by mouth to an unconscious person. Get medical attention immediately.
Skin Contact:
Immediately flush skin with plenty of water for at least 15 minutes while removing
contaminated clothing and shoes. Get medical attention immediately. Wash clothing
before reuse. Thoroughly clean shoes before reuse.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and
upper eyelids occasionally. Get medical attention immediately.
5. Fire Fighting Measures
Fire:
Not combustible, but substance is a strong oxidizer and its heat of reaction with reducing
agents or combustibles may cause ignition.
Explosion:
Strong oxidants may explode when shocked, or if exposed to heat, flame, or friction. Also
may act as initiation source for dust or vapor explosions.
Fire Extinguishing Media:
Use any means suitable for extinguishing surrounding fire. Water spray may be used to
keep fire exposed containers cool.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained
breathing apparatus with full facepiece operated in the pressure demand or other positive
pressure mode.
6. Accidental Release Measures
Ventilate area of leak or spill. Wear appropriate personal protective equipment as
specified in Section 8. Spills: Sweep up and containerize for reclamation or disposal.
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Vacuuming or wet sweeping may be used to avoid dust dispersal. US Regulations
(CERCLA) require reporting spills and releases to soil, water and air in excess of
reportable quantities. The toll free number for the US Coast Guard National Response
Center is (800) 424-8802.
7. Handling and Storage
Protect against physical damage. Store in a dry location separate from combustible,
organic or other readily oxidizable materials. Avoid storage on wood floors. Remove and
dispose of any spilled dichromates; do not return to original containers. Wear special
protective equipment (Sec. 8) for maintenance break-in or where exposures may exceed
established exposure levels. Wash hands, face, forearms and neck when exiting restricted
areas. Shower, dispose of outer clothing, change to clean garments at the end of the day.
Avoid cross-contamination of street clothes. Wash hands before eating and do not eat,
drink, or smoke in workplace. Containers of this material may be hazardous when empty
since they retain product residues (dust, solids); observe all warnings and precautions
listed for the product.
8. Exposure Controls/Personal Protection
Airborne Exposure Limits:
- OSHA Permissible Exposure Limit (PEL): For chromic acid and chromates, as CrO3 =
0.1 mg/m3 (ceiling) - ACGIH Threshold Limit Value (TLV): For water-soluble Cr(VI)
compounds, as Cr = 0.05 mg/m3 (TWA), A1 - confirmed human carcinogen.
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee exposures
below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred
because it can control the emissions of the contaminant at its source, preventing
dispersion of it into the general work area. Please refer to the ACGIH document,
Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for
details.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded, a half-face dust/mist respirator may be worn for up to
ten times the exposure limit or the maximum use concentration specified by the
appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face
piece dust/mist respirator may be worn up to 50 times the exposure limit, or the maximum
use concentration specified by the appropriate regulatory agency, or respirator supplier,
whichever is lowest. For emergencies or instances where the exposure levels are not
known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING: Air-
purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection:
Wear impervious protective clothing, including boots, gloves, lab coat, apron or
coveralls, as appropriate, to prevent skin contact.
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Eye Protection:
Use chemical safety goggles and/or full face shield where dusting or splashing of solutions
is possible. Maintain eye wash fountain and quick-drench facilities in work area.
9. Physical and Chemical Properties
Appearance:
Orange-red crystals or granules.
Odor:
Odorless.
Solubility:
Soluble in water (73%)
Specific Gravity:
2.35 @25C (77F)
pH:
3.5 (1% solution) 4.0 (10% solution)
% Volatiles by volume @ 21C (70F):
0
Boiling Point:
400C (752F)
Melting Point:
357C (675F)
Vapor Density (Air=1):
10
Vapor Pressure (mm Hg):
0 @ 20C (68F)
Evaporation Rate (BuAc=1):
No information found.
10. Stability and Reactivity
Stability:
Stable under ordinary conditions of use and storage.
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Hazardous Decomposition Products:
Burning may produce chrome oxides.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Hydrazine, acetic anhydride, ethanol, trinitrotoluene, hydroxylamine, strong acids,
oxidizable materials especially in the presence of strong acid solutions. Any combustible,
organic or other readily oxidizable material (paper, wood, sulfur, aluminum or plastics).
Conditions to Avoid:
Heat, incompatibles.
11. Toxicological Information
Oral rat LD50: 50 mg/kg. Investigated as a tumorigen, mutagen, reproductive effector.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Sodium Dichromate (10588-01-9) Yes No 1
12. Ecological Information
Environmental Fate:
When released into the soil, this material may leach into groundwater. When released into
water, this material is not expected to evaporate significantly. This material may
bioaccumulate to some extent. When released into the air, this material may be removed
from the atmosphere to a moderate extent by wet deposition.
Environmental Toxicity:
This material is expected to be toxic to aquatic life.
13. Disposal Considerations
Whatever cannot be saved for recovery or recycling should be handled as hazardous
waste and sent to a RCRA approved waste facility. Processing, use or contamination of
this product may change the waste management options. State and local disposal
regulations may differ from federal disposal regulations. Dispose of container and unused
contents in accordance with federal, state and local requirements.
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14. Transport Information
Domestic (Land, D.O.T.)
-----------------------
Proper Shipping Name: RQ, OXIDIZING SOLID, CORROSIVE, N.O.S. (SODIUM
BICHROMATE)
Hazard Class: 5.1, 8
UN/NA: UN3085
Packing Group: II
Information reported for product/size: 100LB
International (Water, I.M.O.)
-----------------------------
Proper Shipping Name: OXIDIZING SOLID, CORROSIVE, N.O.S. (SODIUM
BICHROMATE)
Hazard Class: 5.1, 8
UN/NA: UN3085
Packing Group: II
Information reported for product/size: 100LB
International (Air, I.C.A.O.)
-----------------------------
Proper Shipping Name: OXIDIZING SUBSTANCES, N.O.S. (SODIUM
DICHROMATE)
Hazard Class: 5.1
UN/NA: UN1479
Packing Group: II
Information reported for product/size: 100LB
15. Regulatory Information
--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Sodium Dichromate (10588-01-9) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Sodium Dichromate (10588-01-9) Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Sodium Dichromate (10588-01-9) No No No Chromium com
--------\Federal, State & International Regulations - Part 2\----------------
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-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Sodium Dichromate (10588-01-9) 10 No No
Chemical Weapons Convention: No TSCA 12(b): Yes CDTA: Yes
SARA 311/312: Acute: Yes Chronic: Yes Fire: Yes Pressure: No
Reactivity: Yes (Mixture / Solid)
Prop 65:
THIS PRODUCT CONTAINS A CHEMICAL(S) KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE CANCER.
Australian Hazchem Code: 1WE
Poison Schedule: S6
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled Products
Regulations (CPR) and the MSDS contains all of the information required by the CPR.
16. Other Information
NFPA Ratings: Health: 3 Flammability: 1 Reactivity: 1 Other: Oxidizer
Label Hazard Warning:
DANGER! STRONG OXIDIZER. CONTACT WITH OTHER MATERIAL MAY
CAUSE A FIRE. CORROSIVE. CAUSES SEVERE BURNS TO EVERY AREA OF
CONTACT. MAY BE FATAL IF SWALLOWED. HARMFUL IF INHALED.
AFFECTS THE RESPIRATORY SYSTEM, LIVER, KIDNEYS, EYES, SKIN AND
BLOOD. MAY CAUSE ALLERGIC REACTION. CANCER HAZARD. CAN CAUSE
CANCER. Risk of cancer depends on duration and level of exposure.
Label Precautions:
Keep from contact with clothing and other combustible materials. Do not get in eyes, on
skin, or on clothing. Do not breathe dust or mist from solutions. Keep container closed.
Use only with adequate ventilation. Wash thoroughly after handling. Store in a tightly
closed container. Do not store near combustible materials.
Label First Aid:
In case of contact, immediately flush eyes or skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Wash clothing before reuse. If
inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is
difficult, give oxygen. If swallowed, DO NOT INDUCE VOMITING. Give large
quantities of water. Never give anything by mouth to an unconscious person. In all cases
get medical attention immediately.
Product Use:
Laboratory Reagent.
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Revision Information:
Mixture. New 16 section MSDS format, all sections have been revised.
Disclaimer:
***************************************************************************************
Mallinckrodt Baker, Inc. provides the information contained herein in good faith
but makes no representation as to its comprehensiveness or accuracy. This
document is intended only as a guide to the appropriate precautionary handling of
the material by a properly trained person using this product. Individuals receiving
the information must exercise their independent judgment in determining its
appropriateness for a particular purpose. MALLINCKRODT BAKER, INC.
MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE WITH
RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT
TO WHICH THE INFORMATION REFERS. ACCORDINGLY,
MALLINCKRODT BAKER, INC. WILL NOT BE RESPONSIBLE FOR
DAMAGES RESULTING FROM USE OF OR RELIANCE UPON THIS
INFORMATION.
***************************************************************************************
Prepared by: Strategic Services Division
Phone Number: (314) 539-1600 (U.S.A.)
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