MSDS Number: C0462 * * * * * Effective Date: 11/09/07 * * * * *
Supercedes: 02/23/05

CALCIUM OXIDE

1. Product Identification

Synonyms: Lime unslaked; lime burnt; quicklime; calx; lime
purified
CAS No.: 1305-78-8
Molecular Weight: 56.08

Chemical Formula: CaO
Product Codes:
J.T. Baker:
1410, 1414
Mallinckrodt: 0204, 3530, 4243, 4248, 4268

2. Composition/Information on Ingredients

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

Calcium Oxide 1305-78-8 100% Yes

3. Hazards Identification

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

DANGER! CAUSES SEVERE IRRITATION AND BURNS TO EVERY AREA OF CONTACT.
HARMFUL IF SWALLOWED OR INHALED.

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

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

Health Rating: 2 - Moderate
Flammability Rating: 0 - None

Reactivity Rating: 2 - Moderate
Contact Rating: 3 - Severe
Lab
Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD;
PROPER GLOVES
Storage Color Code: Green (General Storage)

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

Inhalation:
Inhalation of dust is highly irritating and
possibly corrosive to the upper respiratory tract. May cause coughing,
sneezing, labored breathing, and possibly burns with perforation of the nasal
septum.
Ingestion:
Corrosive. May attack the esophagus.
Abdominal pain, nausea, vomiting may result. May cause serious alkali burns in
mouth and throat.
Skin Contact:
Irritant; may cause severe
corrosive damage.
Eye Contact:
Severe irritant, may damage eye
tissues. Causes redness, tearing, blurred vision, pain.
Chronic
Exposure:
Chronic inhalation of dust may cause inflammation of the
respiratory passages, ulcers of the mucous membranes, and possible perforation
of nasal septum.
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.

4. First Aid Measures

Inhalation:
Remove to fresh air. If not breathing, give
artificial respiration. If breathing is difficult, give oxygen. Call a
physician.
Ingestion:
DO NOT INDUCE VOMITING! Give large
quantities of water or milk if available. 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. Call a physician,
immediately. Wash clothing before reuse.
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. Lime and
water can react exothermically with sufficient heat to ignite combustible
materials in certain instances.
Explosion:
Not considered to be
an explosion hazard. The combination of lime and water at high temperatures
may be explosive.
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

Ventilate area of leak or spill. Keep unnecessary and unprotected
people away from area of spill. Wear appropriate personal protective equipment
as specified in Section 8. Spills: Pick up and place in a suitable container
for reclamation or disposal, using a method that does not generate
dust.

7. Handling and Storage

Keep in a tightly closed container. Protect from physical damage.
Store in a cool, dry, ventilated area away from sources of heat, moisture and
incompatibilities. This strongly alkaline material will swell and generate
heat when moistened and could burst container. 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 (TWA).
-ACGIH Threshold Limit Value (TLV):
2
mg/m3 (TWA)
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 full facepiece particulate respirator (NIOSH type N100
filters) may be worn for 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 impervious protective
clothing, including boots, gloves, lab coat, apron or coveralls, as
appropriate, to prevent skin contact.
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:
White to slightly yellowish powder.

Odor:
Odorless.
Solubility:
Slightly soluble in
water with release of heat, formation of calcium hydroxide.
Specific
Gravity:
3.37
pH:
12.5 Saturated solution in water

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

2850C (5162F)
Melting Point:
2572C (4662F)
Vapor
Density (Air=1):
1.9
Vapor Pressure (mm Hg):
No
information found.
Evaporation Rate (BuAc=1):
No information
found.

10. Stability and Reactivity

Stability:
Stable at room temperature in sealed
containers.
Hazardous Decomposition Products:
No hazardous
decomposition products.
Hazardous Polymerization:
Will not
occur.
Incompatibilities:
Water, acids, humid air, hydrogen
fluoride, phosphorous pentoxide, boric oxide, steam, many organic substances.

Conditions to Avoid:
Air, moisture, and incompatibles.

11. Toxicological Information

--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Calcium Oxide (1305-78-8) No No None

12. Ecological Information

Environmental Fate:
No information found.

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
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
----------------------------------------------- ---- --- ----- ---------
Calcium Oxide (1305-78-8) Yes Yes Yes Yes

--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Calcium Oxide (1305-78-8) Yes Yes No Yes

--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Calcium Oxide (1305-78-8) No No No No

--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Calcium Oxide (1305-78-8) No No No

Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: Yes Fire: No Pressure: No
Reactivity: Yes (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: 1 Flammability: 0
Reactivity: 1
Label Hazard Warning:
DANGER! CAUSES
SEVERE IRRITATION AND BURNS TO EVERY AREA OF CONTACT. HARMFUL IF SWALLOWED OR
INHALED.
Label Precautions:
Do not get in eyes, on skin, or on
clothing.
Do not breathe dust.
Keep container closed.
Use only with
adequate ventilation.
Wash thoroughly after handling.
Label First
Aid:
In case of contact, immediately flush eyes or skin with plenty of
water for at least 15 minutes. Remove contaminated clothing and shoes. Wash
clothing before reuse. If swallowed, DO NOT INDUCE VOMITING. Give large
quantities of water. Never give anything by mouth to an unconscious person. If
inhaled, remove to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen. In all cases call a physician.

Product Use:
Laboratory Reagent.
Revision
Information:
No Changes.
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.)