MSDS Number: M0754 * * * * * Effective Date: 04/02/07 * * * * *
Supercedes: 08/10/04

MANGANOUS CARBONATE

1. Product Identification

Synonyms: Manganese carbonate; carbonic acid, manganese
(2+) salt (1:1); rhodochrosite
CAS No.: 598-62-9
Molecular
Weight: 114.94
Chemical Formula: MnCO3
Product
Codes:
J.T. Baker: 2536, 2537
Mallinckrodt: 2538, 5418, 6107

2. Composition/Information on Ingredients

Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------------ ---------

Manganese Carbonate 598-62-9 90 - 100% Yes

3. Hazards Identification

Emergency Overview
--------------------------

CAUTION! CHRONIC INHALATION HAZARD. MAY AFFECT CENTRAL NERVOUS SYSTEM,
BLOOD AND RESPIRATORY SYSTEM.

SAF-T-DATA(tm)
Ratings (Provided here for your convenience)

-----------------------------------------------------------------------------------------------------------

Health Rating: 3 - Severe (Life)
Flammability Rating: 0 - None

Reactivity Rating: 1 - Slight
Contact Rating: 1 - Slight
Lab
Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES
Storage
Color Code: Green (General Storage)

Potential Health Effects
----------------------------------

Inhalation:
Acute poisoning can occur from excessive
inhalation causing symptoms noted under Chronic Exposure.

Ingestion:
Extremely large oral dosages may produce
gastrointestinal disturbances and acute poisoning as noted under Chronic
Exposure.
Skin Contact:
No adverse effects expected.
Eye
Contact:
No adverse effects expected but dust may cause mechanical
irritation.
Chronic Exposure:
Chronic manganese poisoning can
result from excessive inhalation and ingestion exposure and involves
impairment of the central nervous system. Early symptoms include sluggishness,
sleepiness, and weakness in the legs. Advanced cases have shown fixed facial
expression, emotional disturbances, spastic gait, and falling. Illness closely
resembles Parkinson's Disease. Kidney effects, blood changes and manganese
psychosis also may occur as a result of chronic exposure. Chronic inhalation
exposure can cause lung damage.
Aggravation of Pre-existing
Conditions:
Persons with pre-existing skin disorders or eye problems
or impaired respiratory function may be more susceptible to the effects of the
substance. A nutritional iron deficiency leaves the body more susceptible to
manganese build-up.

4. First Aid Measures

Inhalation:
Remove to fresh air. Get medical attention
for any breathing difficulty.
Ingestion:
If large amounts were
swallowed, give water to drink and get medical advice.
Skin
Contact:
Wash exposed area with soap and water. Not expected to
require first aid measures.
Eye Contact:
Wash thoroughly with
running water. Get medical advice if irritation develops.

5. Fire Fighting Measures

Fire:
Not considered to be a fire hazard.

Explosion:
Not considered to be an explosion hazard.

Fire Extinguishing Media:
Use any means suitable for
extinguishing surrounding fire.
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

Clean-up personnel require protective clothing and respiratory
protection from dust. 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. Vacuuming or wet sweeping may be
used to avoid dust dispersal.

7. Handling and Storage

Keep in a tightly closed container, stored in a cool, dry,
ventilated area. Protect against physical damage. Material discolors on
contact with air. Isolate from incompatible substances. 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):
5 mg/m3 Ceiling for manganese compounds as Mn

- ACGIH
Threshold Limit Value (TLV):
0.2 mg/m3 (TWA) for manganese, elemental and
inorganic compounds as Mn
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 and engineering
controls are not feasible, a half facepiece particulate respirator (NIOSH type
N95 or better filters) 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 particulate
respirator (NIOSH type N100 filters) 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. If oil
particles (e.g. lubricants, cutting fluids, glycerine, etc.) are present, use
a NIOSH type R or P filter. 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 protective
gloves and clean body-covering clothing.
Eye Protection:
Use
chemical safety goggles. Maintain eye wash fountain and quick-drench
facilities in work area.

9. Physical and Chemical Properties

Appearance:
Fine, pink, light brown powder.

Odor:
Odorless.
Solubility:
Insoluble in water.

Density:
3.125
pH:
No information found.

% Volatiles by volume @ 21C (70F):
0
Boiling Point:

Not applicable.
Melting Point:
> 200C (> 392F)

Vapor Density (Air=1):
No information found.
Vapor
Pressure (mm Hg):
No information found.
Evaporation Rate
(BuAc=1):
No information found.

10. Stability and Reactivity

Stability:
Stable under ordinary conditions of use and
storage. Discolors slowly in air. Slowly decomposes in air to manganous oxide
with evolution of carbon dioxide gas.
Hazardous Decomposition
Products:
At higher temperatures (7300C) forms manganous oxides,
carbon dioxide and carbon monoxide.
Hazardous Polymerization:

Will not occur.
Incompatibilities:
Contact with acids may
generate carbon dioxide gas. Oxidizes toxic sulfur dioxide to the more toxic
sulfur trioxide and causes violent decomposition of hydrogen peroxide.

Conditions to Avoid:
Excessive dust generation. Incompatibles.

11. Toxicological Information

No LD50/LC50 information found relating to normal routes of
occupational exposure.

--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Manganese Carbonate (598-62-9) No No None

12. Ecological Information

Environmental Fate:
No information found.

Environmental Toxicity:
No information found.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be
managed in an appropriate and approved waste disposal 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.

14. Transport Information

Not regulated.

15. Regulatory Information

--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Manganese Carbonate (598-62-9) Yes Yes Yes Yes

--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Manganese Carbonate (598-62-9) Yes Yes No Yes

--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Manganese Carbonate (598-62-9) No No No Manganese co

--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Manganese Carbonate (598-62-9) 1 No No

Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: No Chronic: Yes Fire: No Pressure: No
Reactivity: No (Pure / Solid)

Australian Hazchem Code: None allocated.

Poison Schedule: None allocated.
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: 0 Flammability: 0
Reactivity: 1
Label Hazard Warning:
CAUTION! CHRONIC
INHALATION HAZARD. MAY AFFECT CENTRAL NERVOUS SYSTEM, BLOOD AND RESPIRATORY
SYSTEM.
Label Precautions:
Avoid prolonged or repeated
inhalation of dust.
Use only with adequate ventilation.
Keep container
closed.
As part of good industrial and personal hygiene and safety
procedure, avoid all unnecessary exposure to the chemical substance and ensure
prompt removal from skin, eyes and clothing.
Label First Aid:

If inhaled, remove to fresh air. Get medical attention for any breathing
difficulty. In case of contact, immediately flush eyes or skin with plenty of
water for at least 15 minutes. Get medical attention if irritation develops or
persists.
Product Use:
Laboratory Reagent.
Revision
Information:
MSDS Section(s) changed since last revision of document
include: 3.
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: Environmental Health & Safety
Phone Number:
(314) 654-1600 (U.S.A.)