EMERGENCY OVERVIEW
APPEARANCE AND ODOR: CLEAR, COLORLESS, SYRUPY LIQUID WITH NO ODOR

WARNING STATEMENTS
                            DANGER! CAUSES EYE AND SKIN BURNS. MAY BE HARMFUL IF SWALLOWED. CORROSIVE TO MILD STEEL

POTENTIAL HEALTH EFFECTS: LIKELY ROUTES OF EXPOSURE: SKIN CONTACT

EYE CONTACT: THIS PROJECT CAUSES EYE BURNS. INJURY MAY BE PERMANENT

SKIN CONTACT: THIS PRODUCT CAUSES SKIN BURNS BASED ON PHYSICAL PROPERTIES.
                          IT MAY NOT PRODUCE AN IMMEDIATE BURNING SENSATION UPON SKIN
                          CONTACT, DELAYING THE AWARENESS OF THE WORKER THAT CONTACT HAS
                          OCCURRED.

INHALATION: BREATHING OF VAPOR OR MIST MAY BE IRRITATING TO THE RESPIRATORY TRACT.

INGESTION: THIS PRODUCT MAY BE HARMFUL IF SWALLOWED. MAY CAUSE NAUSEA, 
                    VOMITING, ABDOMINAL DISCOMFORT, BURNS AND A BURNING SENSATION
                    (BURNING BEHIND THE BREAST BONE) BASED ON PHYSICAL PROPERTIES.

                   REFER TO SECTION 11 FOR TOXICOLOGICAL INFORMATION

SECTION IV - FIRST AID MEASURES

IF IN EYES OR ON SKIN: IMMEDIATELY FLUSH WITH PLENTY OF WATER FOR AT LEAST 15 MINUTES WHILE REMOVING CONTAMINATED CLOTHING AND SHOES. IF EASY TO DO, REMOVE ANY CONTACT LENSES. GET MEDICAL ATTENTION. REMOVE MATERIAL FROM EYES, SKIN AND CLOTHING. WASH CLOTHING AND THOROUGHLY CLEAN SHOES BEFORE REUSE.

IF INHALED: REMOVE TO FRESH AIR. IF NOT BREATHING, GIVE ARTIFICIAL RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN.

IF SWALLOWED: DO NOT INDUCE VOMITING. OFFER A GLASS OF WATER TO DRINK. GET MEDICAL ATTENTION. CONTACT A POISON CONTROL CENTER. NEVER GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.

SECTION V - FIRE FIGHTING MEASURES

FLASH POINT: NOT COMBUSTIBLE

HAZARDOUS PRODUCTS OF COMBUSTION: N/A

EXTINGUISHING MEDIA: N/A

UNUSUAL FIRE AND EXPLOSION HAZARDS: ALTHOUGH THIS PRODUCT DOES NOT MEET THE
PARAMETERS FOR FLAMMABILITY, IT CAN REACT WITH METALS TO LIBERATE HYDROGEN,
A FLAMMABLE GAS.

SECTION VI - ACCIDENTAL RELEASE MEASURES

CONTAIN LARGE SPILLS WITH DIKES AND TRANSFER THE MATERIAL TO APPROPRIATE CONTAINERS FOR RECLAMATION OR DISPOSAL. ABSORB REMAINING MATERIAL OR SMALL SPILLS WITH AN INERT MATERIAL AND THEN PLACE IN A CHEMICAL WASTE CONTAINER. NEUTRALIZE WASHINGS WITH A BASE SUCH AS SODA ASH OR LIME. FLUSH RESIDUAL SPILL AREA WITH LARGE AMOUNTS OF WATER.

REFER TO SECTION 13 FOR DISPOSAL INFORMATION AND SECTIONS 14 AND 15 FOR REPORTABLE QUANTITY INFORMATION.

SECTION V II - HANDLING AND STORAGE

HANDLING:
DO NOT GET IN EYES, ON SKIN OR ON CLOTHING.

AVOID BREATHING MIST OR VAPOR.

DO NOT TASTE OR SWALLOW.

KEEP CONTAINER CLOSED.

USE ONLY WITH ADEQUATE VENTILATION.

WASH THOROUGHLY AFTER HANDLING.

EMPTIED CONTAINER RETAINS VAPOR AND PRODUCT RESIDUE. OBSERVE ALL LABELED SAFEGUARDS UNTIL CONTAINER IS CLEANED, RECONDITIONED OR DESTROYED.

TRANSFER PRODUCT FROM DRUMS TO PROCESS IN CLOSED SYSTEM (HERMETICALLY) IF NOT POSSIBLE USE EFFECTIVE LOCAL EXHAUST VENTILATION. EMPTY DRUMS AS THOROUGHLY AS POSSIBLE TO FACILITATE DISPOSAL. FOR BULK TRANSFER, PURGE LINES WITH NITROGEN TO REMOVE RESIDUAL LIQUID BEFORE DISCONNECT. WHEN UNLOADING BULK VEHICLES, PERSONNEL SHOULD WEAR CHEMICAL GOGGLES AND RUBBER OR  NEOPRENE GLOVES. ALL FITTINGS SHOULD BE PROPERLY SECURED PRIOR TO ENERGIZING UNLOADING SYSTEM. CARE SHOULD BE TAKEN TO AVOID ACID CONTACT WHEN DISCONNECTING LINES/HOSES AFTER UNLOADING. FOR BULK STORAGE TYPE 316L STAINLESS IS RECOMMENDED. GLASS, POLYETHYLENE AND FRP (DEPENDING ON RESIN USED) ARE SATISFACTORY. STEEL, ALUMINUM AND TYPE 304 STAINLESS ARE NOT RECOMMENDED BECAUSE OF RAPID OR POTENTIAL CORROSION. VESSELS SHOULD BE VENTED AND OPERATED AT AMBIENT CONDITIONS. MAINTENANCE HEAT (HOT WATER PREFERRED) MAY BE USED TO PREVENT FREEZING. DIKE AREA AROUND STORAGE TANK WITH SUFFICIENT VOLUME TO HOLD ENTIRE TANK CONTENTS.

STORAGE:
STORE IN PLASTIC, RUBBER-LINED, OR 316 STAINLESS STEEL TANKS DESIGNED FOR H3PO4.
STORE DRUMS AWAY FROM HEAT AND OUT OF DIRECT SUNLIGHT. STORE IN A WELL VENTILATED, DRY AREA AWAY ROM ALKALIES AND MOST METALS. STORE ABOVE FREEZING POINT. CONTACT WITH REACTIVE METALS, I.E., MILD STEEL AND ALUMINUM MAY GENERATE HYDROGEN THAT MAY FORM AND EXPLOSIVE MIXTURE IN STORAGE VESSELS.

SECTION V III - EXPOSURE CONTROLS/PERSONAL PROTECTION

EYE PROTECTION: WHERE THERE IS POTENTIAL FOR EYE CONTACT, WEAR GOGGLES AND
HAVE EYE FLUSHING EQUIPMENT IMMEDIATELY AVAILABLE.

SKIN PROTECTION: WEAR APPROPRIATE PROTECTIVE CLOTHING AND CHEMICAL RESISTANT GLOVES TO PREVENT SKIN CONTACT. CONSULT THE GLOVE/CLOTHING MANUFACTURER TO DETERMINE THE APPROPRIATE TYPE GLOVE/CLOTHING FOR A GIVEN APPLICATION. WEAR CHEMICAL GOGGLES, A FACE SHIELD, AND A CHEMICAL RESISTANT CLOTHING WHEN SPLASHING IS LIKELY. WASH IMMEDIATELY IF SKIN IS CONTAMINATED. REMOVE  CONTAMINATED CLOTHING PROMPTLY AND LAUNDER BEFORE REUSE. CLEAN PROTECTIVE EQUIPMENT BEFORE REUSE. PROVIDE A SAFETY SHOWER AT ANY LOCATION WHERE SKIN CONTACT MAY OCCUR. WASH THOROUGHLY AFTER HANDLING.

RESPIRATORY PROTECTION: AVOID BREATHING VAPOR OR MIST. USE NIOSH/MSHA APPROVED RESPIRATORY PROTECTION EQUIPMENT (FULL FACE PIECE RECOMMENDED) WHEN AIRBORNE EXPOSURE LIMITS ARE EXCEEDED (SEE BELOW) IF USED, FULL FACE PIECE REPLACES THE NEED FOR FACE SHIELD AND/OR CHEMICAL GOGGLES.  CONSULT THE RESPIRATOR MANUFACTURER TO DETERMINE THE APPROPRIATE TYPE OF EQUIPMENT FOR A GIVEN APPLICATION. OBSERVE RESPIRATOR USE LIMITATIONS  SPECIFIED BY NIOSH/MSHA OR THE MANUFACTURER. RESPIRATORY PROTECTION PROGRAMS MUST COMPLY WITH 2.9 C.F.R. 1910.134.

VENTILATION: PROVIDE NATURAL OR MECHANICAL VENTILATION TO MINIMIZE EXPOSURE. THE USE OF LOCAL MECHANICAL EXHAUST VENTILATION IS PREFERRED AT SOURCES OR AIR CONTAMINATION SUCH AS OPEN PROCESS EQUIPMENT. CONSULT NFPA STANDARD 91 FOR DESIGN OF EXHAUST SYSTEMS.

AIRBORNE EXPOSURE LIMITS

CHEMICAL FORMULA:                        H3PO4
APPEARANCE:                                    CLEAR, COLORLESS, SYRUPY LIQUID
ODOR:                                                NONE
VAPOR PRESSURE (100% ACID)         0.0285 mm Hg at 20 degrees C
SOLUBILITY IN WATER:                     COMPLETE

NOTE: THESE PHYSICAL DATA ARE TYPICAL VALUES BASED ON MATERIAL TESTED BY MAY VARY FROM SAMPLE TO SAMPLE. TYPICAL VALUES SHOULD NOT BE CONSTRUED AS A  GUARANTEED ANALYSIS OF ANY SPECIFIC LOT OR AS SPECIFICATIONS FOR THE PRODUCT.

STABILITY: PRODUCT IS STABLE UNDER NORMAL CONDITIONS OF STORAGE AND HANDLING.

MATERIALS TO AVOID: AVOID CONTACT WITH METALS WHICH MAY LIBERATE FLAMMABLE HYDROGEN GAS. AVOID CONTACT WITH MATERIALS SUCH AS SULFIDES AND SULFITES WHICH
COULD RELEASE TOXIC GASES. BE CAUTIOUS IN MIXING WITH STRONG BASES BECAUSE
HIGH HEAT OF REACTION CAN GENERATE STEAM.

HAZARDOUS DECOMPOSITION PRODUCTS: UNKNOWN

HAZARDOUS POLYMERIZATION: WILL NOT OCCUR

DATE REVISED: MAY 2000

While Tri-Ess Sciences Inc. believes the information set forth herein is accurate as of the date thereof, Tri-Ess Sciences Inc. makes no warranty with respect thereto and expressly disclaims all liability for reliance thereof, such data is offered solely for your consideration, investigation and your verification.