=====================  Product Identification  =====================

MSDS NAME:PH 4.01 BUFFER, 910104, 910460, 9104CB
Status Code:A
MSDS Number: CKSVL
=== Responsible Party ===
Company:ORION RESEARCH, INC., A SUBSIDIARY OF THERMEDICS INC.
Address:500 CUMMINGS CENTER
City:BEVERLY
State:MA
ZIP:01915-6199
Country:US
Info Phone Num:978-922-4400
Emergency Phone Num:978-922-4400
Resp. Party Other MSDS Num.:205487-001 REV. G
Preparer's Name:S. FLYNN, QA CHEMIST
CAGE:014G6
=== Contractor Identification ===
Company:ORION RESEARCH, INC.
Address:500 CUMMINGS CENTER
Box:City:BEVERLY
State:MA
ZIP:01915-6199
Country:US
Phone:978-232-6000
CAGE:014G6

=============  Composition/Information on Ingredients  =============

Name:POTASSIUM HYDROGEN PHTHALATE (KHP)
CAS:877-24-7
= Wt:1.
OSHA PEL:NONE
ACGIH TLV:NONE

Name:AMARANTH RED DYE (C20H11N2NA3O10S3)
CAS:915-67-3
RTECS #:OJ6550000
< Wt:.01
OSHA PEL:NONE
ACGIH TLV:NONE

Name:DEIONIZED WATER (H2O)
CAS:7732-18-5
RTECS #:ZC0110000
= Wt:99.
OSHA PEL:NA
ACGIH TLV:NA

=====================  Hazards Identification  =====================

Routes of Entry: Inhalation:NO	Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE-LOW HAZARD BECAUSE OF LOW
    CONCENTRATION OF SALTS.  CHRONIC: POSSIBLE SKIN IRRITANT FOR
    PROLONGED EXPOSURE.
Explanation of Carcinogenicity:NTP: AMARANTH RED IS SUSPECTED (MFR).
    IARC MONOGRAPHS: ANIMAL POSITIVE (MFR). OSHA REGULATED: NOT FOUND
    (MFR). AMARANTH RED NOT LISTED AS A CARCINOGEN BY IARC OR NTP .
Effects of Overexposure:SKIN IRRITATION.
Medical Cond Aggravated by Exposure:COULD AGGRAVATE DISEASES OF THE
    SKIN.

=======================  First Aid Measures  =======================

First Aid:EYES/SKIN: WASH OFF CONTACT AREA WITH WATER. IF INGESTED,
    GIVE LARGE AMOUNTS OF WATER. CONTACT PHYSICIAN. INHALATION: REMOVE
    TO FRESH AIR. SUPPORT BREATHING. CONTACT PHYSICIAN IMMEDIATELY .

=====================  Fire Fighting Measures  =====================

Flash Point:NOT FLAMMABLE
Autoignition Temp:Autoignition Temp Text:NA
Lower Limits:NA
Upper Limits:NA
Extinguishing Media:WATER, CO2, DRY CHEMICAL, FOAM OR SPRAY.
Fire Fighting Procedures:USE NIOSH APPROVED SCBA AND FULL PROTECTIVE
    EQUIPMENT . NONE.  NON-FLAMMABLE (MFR).
Unusual Fire/Explosion Hazard:NONE.

==================  Accidental Release Measures  ==================

Spill Release Procedures:WASH DOWN DRAIN WITH EXCESS WATER IF LOCAL LAW
    ALLOWS.

======================	Handling and Storage  ======================

Handling and Storage Precautions:SUITABLE FOR ANY GENERAL HANDLING AND
    STORAGE.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:A NIOSH APPROVED RESPIRATOR APPROPRIATE FOR THE
    EXPOSURE OF CONCERN .
Ventilation:LOCAL EXHAUST, SPECIAL, MECHANICAL (GENERAL), OTHER: NONE.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPROVED CHEMICAL SAFETY GOGGLES .
Other Protective Equipment:EYEWASH AND DELUGE SHOWER MEETING ANSI
    DESIGN CRITERIA . LAB COAT.
Work Hygienic Practices:NO EATING OR DRINKING WHILE WORKING WITH THIS
    PRODUCT.
Supplemental Safety and Health

==================  Physical/Chemical Properties  ==================

Boiling Pt:=100.C, 212.F
B.P. Text:750 MM HG
Melt/Freeze Pt:=0.C, 32.F
Vapor Pres:NA
Vapor Density:(AIR=1) NA
Spec Gravity:(H2O=1): 1.0
pH:@25C: 4.01
Evaporation Rate & Reference:(BUTYL ACETATE=1) NA
Solubility in Water:MISCIBLE
Appearance and Odor:BRIGHT RED, ODORLESS LIQUID.
Percent Volatiles by Volume:NA

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
HNO3.
Hazardous Decomposition Products:NONE.

===================  Toxicological Information	===================

Toxicological Information:LD50: (MG/KG): POTASSIUM HYDROGEN
    PHTHALATE(KHP): NA. AMARANTH RED DYE: 1,000 (IPR-MUS). DEIONIZED
    WATER: 190,000 (IPR-MUS).

====================  Disposal Considerations  ====================

Waste Disposal Methods:CONSULT WITH AND OBSERVE ALL FEDERAL, STATE AND
    LOCAL LAWS WHEN DISPOSING OF THIS PRODUCT.

===================  MSDS Transport Information  ===================

Transport Information:HAZARDOUS SHIPMENT LABELING: DOT: NA. IATA: NA.

=====================  Regulatory Information  =====================

SARA Title III Information:THIS PRODUCT NOT REGULATED UNDER SARA TITLE
    III.
Federal Regulatory Information:COMPONENTS ARE LISTED IN THE EPA TSCA
    INVENTORY.
State Regulatory Information:NOT AFFECTED BY CAL PROP 65.

=======================  Other Information  =======================

 Disclaimer (provided with this information by the compiling agencies):
 This information is formulated for use by elements of the Department
 of Defense.  The United States of America in no manner whatsoever,
 expressly or implied, warrants this information to be accurate and
 disclaims all liability for its use.  Any person utilizing this
 document should seek competent professional advice to verify and
 assume responsibility for the suitability of this information to their
 particular situation.

*** END OF RECORD ***