MSDS Number: O4412 * * * * * Effective Date: 02/16/06 * * * * *
Supercedes: 02/18/03

ORANGE IV

1. Product Identification

Synonyms: p-(p-Anilinophenylazo)-benzenesulfonic acid
sodium salt
CAS No.: 554-73-4
Molecular Weight: 375.38

Chemical Formula: C18H14N3NaO3S
Product Codes: S749

2. Composition/Information on Ingredients

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

Orange IV 554-73-4 90 - 100% Yes

3. Hazards Identification

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

WARNING! TOXICOLOGICAL PROPERTIES UNKNOWN. MAY BE HARMFUL IF SWALLOWED,
INHALED OR ABSORBED THROUGH SKIN. MAY CAUSE IRRITATION TO SKIN, EYES, AND
RESPIRATORY TRACT.

Potential Health Effects

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

The toxicological properties of
this material have not been investigated.

Inhalation:
No
information found, but compound should be handled as a potential health
hazard. May cause irritation to the respiratory tract. Symptoms may include
coughing, sore throat, labored breathing, and chest pain.

Ingestion:
No information found, but compound should be handled
as a potential health hazard. May cause irritation to the gastrointestinal
tract. Symptoms may include nausea, vomiting and diarrhea.
Skin
Contact:
No information found, but compound should be handled as a
potential health hazard. May cause irritation with redness and pain. May be
absorbed through the skin with possible systemic effects.
Eye
Contact:
potential health hazard. May cause irritation, redness and pain.

Chronic Exposure:
No information found.
Aggravation of
Pre-existing Conditions:
No information found.

4. First Aid Measures

Inhalation:
Remove to fresh air. If not breathing, give
artificial respiration. If breathing is difficult, give oxygen. Get medical
attention.
Ingestion:
Give large amounts of water to drink.
Never give anything by mouth to an unconscious person. Get medical attention.

Skin Contact:
Immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes. Wash
clothing before reuse. Thoroughly clean shoes before reuse. Get medical
attention if symptoms occur.
Eye Contact:
Immediately flush
eyes with plenty of water for at least 15 minutes, lifting upper and lower
eyelids occasionally. Get medical attention if irritation persists.

5. Fire Fighting Measures

Fire:
As with most organic solids, fire is possible at
elevated temperatures or by contact with an ignition source.

Explosion:
Fine dust dispersed in air in sufficient
concentrations, and in the presence of an ignition source is a potential dust
explosion hazard.
Fire Extinguishing Media:
Dry chemical, foam
or carbon dioxide.
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

Remove all sources of ignition. Ventilate area of leak or spill.
Wear appropriate personal protective equipment as specified in Section 8.
Spills: Clean up spills in a manner that does not disperse dust into the air.
Use non-sparking tools and equipment. Reduce airborne dust and prevent
scattering by moistening with water. Pick up spill for recovery or disposal
and place in a closed container.

7. Handling and Storage

Keep in a tightly closed container, stored in a cool, dry,
ventilated area. Protect against physical damage. 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:
None established.

Ventilation System:
A system of local and/or general exhaust is
recommended to keep employee exposures as low as possible. 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):
For conditions of use
where exposure to dust or mist is apparent and engineering controls are not
feasible, a particulate respirator (NIOSH type N95 or better filters) may be
worn. 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-face 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.
Other Control Measures:
There is
insufficient data in the published literature to assign complete numerical
SAF-T-DATA* ratings and laboratory protective equipment for this product.
Special precautions must be used in storage, use and handling. Protective
equipment for laboratory bench use should be chosen using professional
judgment based on the size and type of reaction or test to be conducted and
the available ventilation, with overriding consideration to minimize contact
with the chemical.

9. Physical and Chemical Properties

Appearance:
Yellow-brown to orange powder.

Odor:
No information found.
Solubility:
Soluble
in water.
Specific Gravity:
No information found.

pH:
No information found.
% Volatiles by volume @ 21C
(70F):
0
Boiling Point:
No information found.

Melting Point:
No information found.
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.
Hazardous Decomposition Products:
Burning may produce
carbon monoxide, carbon dioxide, sulfur oxides, and nitrogen oxides.

Hazardous Polymerization:
Will not occur.

Incompatibilities:
No information found.
Conditions to
Avoid:
No information found.

11. Toxicological Information

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

--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Orange IV (554-73-4) 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
----------------------------------------------- ---- --- ----- ---------
Orange IV (554-73-4) Yes Yes No Yes

--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Orange IV (554-73-4) Yes No Yes No

--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Orange IV (554-73-4) No No No No

--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Orange IV (554-73-4) No No No

Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: No Chronic: No 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: 1 Flammability: 1
Reactivity: 0
Label Hazard Warning:
WARNING!
TOXICOLOGICAL PROPERTIES UNKNOWN. MAY BE HARMFUL IF SWALLOWED, INHALED OR
ABSORBED THROUGH SKIN. MAY CAUSE IRRITATION TO SKIN, EYES, AND RESPIRATORY
TRACT.
Label Precautions:
No SAF-T-DATA Ratings have been
developed for this product. Read and follow all warnings, precautions,
instructions and other safety and handling information on the label and
MSDS.
Avoid breathing dust.
Avoid contact with eyes, skin and
clothing.
Keep container closed.
Use 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
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, give large amounts of
water to drink. Never give anything by mouth to an unconscious person. In all
cases, get medical attention.
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.)