MSDS Number: D2224 * * * * * Effective Date: 07/05/07 * * * * *
Supercedes: 05/07/07

p-DICHLOROBENZENE

1. Product Identification

Synonyms: 1,4-Dichlorobenzene; para-dichlorobenzene;
Paracide; PDCB
CAS No.: 106-46-7
Molecular Weight:
147.01
Chemical Formula: C6H4Cl2
Product Codes: G970

2. Composition/Information on Ingredients

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

p-Dichlorobenzene 106-46-7 100% Yes

3. Hazards Identification

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

WARNING! HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN.
AFFECTS THE RESPIRATORY SYSTEM, LIVER, KIDNEYS, EYES, SKIN AND BLOOD. CAUSES
IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. COMBUSTIBLE. POSSIBLE CANCER
HAZARD. MAY CAUSE CANCER BASED ON ANIMAL DATA.

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

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

Health Rating: 3 - Severe (Cancer Causing)
Flammability Rating: 2 -
Moderate
Reactivity Rating: 1 - Slight
Contact Rating: 2 - Moderate
(Life)
Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON;
VENT HOOD; PROPER GLOVES; CLASS B EXTINGUISHER
Storage Color Code: Red
(Flammable)

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

Inhalation:
Inhalation of dust or vapors can irritate the
nose and throat. May also cause headache, swelling around the eyes and runny
nose. Can cause loss of appetite, nausea, vomiting, central nervous system
effects, weight loss and liver and kidney damage.
Ingestion:

Toxic. Swallowing can produce adverse health effects paralleling
inhalation.
Skin Contact:
Causes skin irritation, with a slight
burning sensation. Red blotching of the skin due to allergic reactions may
occur. May be absorbed through the skin; symptoms may parallel inhalation.

Eye Contact:
Causes irritation, redness, and pain.

Chronic Exposure:
Chronic exposure may damage blood, lungs,
central nervous system, liver and kidneys. p-Dichlorobenzene is a possible
carcinogen.
Aggravation of Pre-existing Conditions:
Persons
with pre-existing skin disorders or eye problems, or impaired liver, kidney or
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:
Induce vomiting immediately as directed
by medical personnel. Never give anything by mouth to an unconscious person.
Call a physician.
Skin Contact:
Wash skin with soap or mild
detergent and water for at least 15 minutes while removing contaminated
clothing and shoes. Wash clothing before reuse. Call a physician.
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:
Flash point: 66C (151F) CC
Combustible!

Explosion:
Above the flash point, explosive vapor-air mixtures
may be formed. Contact with strong oxidizers may cause fire.
Fire
Extinguishing Media:
Water spray, dry chemical, alcohol foam, or
carbon dioxide. Water spray may be used to keep fire exposed containers cool,
dilute spills to nonflammable mixtures, protect personnel attempting to stop
leak and disperse vapors.
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. 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. Outside or detached storage is
preferred. Inside storage should be in a standard flammable liquids storage
room or cabinet. Separate from oxidizing materials. Storage and use areas
should be No Smoking areas. 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):
75 ppm (TWA)
-ACGIH Threshold Limit Value (TLV):
10 ppm
(TWA), listed as A3, animal 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, and
engineering controls are not feasible, a full-face piece respirator with an
organic vapor cartridge and particulate filter (NIOSH type N100 filter) 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 particulate filter. For
emergencies or instances where the exposure levels are not known, use a
full-face piece 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 crystals.
Odor:

Moth-ball odor
Solubility:
Practically insoluble in water.

Specific Gravity:
1.25 @ 20C/4C
pH:
No
information found.
% Volatiles by volume @ 21C (70F):
100

Boiling Point:
174C (345F)
Melting Point:
53C
(127F)
Vapor Density (Air=1):
5.08
Vapor Pressure (mm
Hg):
10 @ 54.8C (131F)
Evaporation Rate (BuAc=1):
Not
applicable.

10. Stability and Reactivity

Stability:
Stable under ordinary conditions of use and
storage.
Hazardous Decomposition Products:
May produce carbon
monoxide, carbon dioxide, hydrogen chloride and phosgene when heated to
decomposition.
Hazardous Polymerization:
Will not occur.

Incompatibilities:
Oxidizing agents, aluminum and its alloys.

Conditions to Avoid:
Heat, flames, ignition sources and
incompatibles.

11. Toxicological Information

Oral rat LD50: 500 mg/kg; skin rabbit LD50: > 2 gm/kg;
investigated as a tumorigen, mutagen, reproductive effector.

--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
p-Dichlorobenzene (106-46-7) No Yes 2B

12. Ecological Information

Environmental Fate:
When released into the soil, this
material may leach into groundwater. When released into the soil, this
material may evaporate to a moderate extent. When released into the soil, this
material may biodegrade to a moderate extent. When released into water, this
material may evaporate to a moderate extent. When released into water, this
material may biodegrade to a moderate extent. This material has an
experimentally-determined bioconcentration factor (BCF) of greater than 100.
This material may bioaccumulate to some extent. When released into the air,
this material may be moderately degraded by reaction with photochemically
produced hydroxyl radicals. When released into the air, this material is
expected to have a half-life of greater than 30 days. When released into the
air, this material may be removed from the atmosphere to a moderate extent by
wet deposition.
Environmental Toxicity:
The LC50/96-hour values
for fish are between 1 and 10 mg/l. The LC50/96-hour values for fish are
between 10 and 100 mg/l. This material may 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 incinerator or disposed
in 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.

14. Transport Information

Domestic (Land, D.O.T.)
-----------------------

Proper Shipping Name: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID,
N.O.S. (PARA-DICHLOROBENZENE)
Hazard Class: 9
UN/NA:
UN3077
Packing Group: III
Information reported for
product/size: 5KG

International (Water, I.M.O.)

-----------------------------
Proper Shipping Name:
ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (PARA-DICHLOROBENZENE)

Hazard Class: 9
UN/NA: UN3077
Packing Group: III

Information reported for product/size: 5KG

International
(Air, I.C.A.O.)
-----------------------------
Proper Shipping
Name: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.
(PARA-DICHLOROBENZENE)
Hazard Class: 9
UN/NA: UN3077

Packing Group: Information reported for product/size: 5KG

15. Regulatory Information

--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
p-Dichlorobenzene (106-46-7) Yes Yes Yes Yes

--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
p-Dichlorobenzene (106-46-7) Yes Yes No Yes

--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
p-Dichlorobenzene (106-46-7) No No Yes No

--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
p-Dichlorobenzene (106-46-7) 100 U072 No

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

WARNING:
THIS PRODUCT CONTAINS A CHEMICAL(S) KNOWN TO
THE STATE OF CALIFORNIA TO CAUSE CANCER.

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: 2 Flammability: 2
Reactivity: 0
Label Hazard Warning:
WARNING! HARMFUL IF
SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. AFFECTS THE RESPIRATORY SYSTEM,
LIVER, KIDNEYS, EYES, SKIN AND BLOOD. CAUSES IRRITATION TO SKIN, EYES AND
RESPIRATORY TRACT. COMBUSTIBLE. POSSIBLE CANCER HAZARD. MAY CAUSE CANCER BASED
ON ANIMAL DATA.
Label Precautions:
Avoid breathing dust or
vapors.
Use only with adequate ventilation.
Avoid contact with eyes,
skin and clothing.
Keep container closed.
Use with adequate
ventilation.
Wash thoroughly after handling.
Keep away from heat and
flame.
Label First Aid:
If swallowed, induce vomiting
immediately as directed by medical personnel. 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 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. In all cases call a physician.
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.)