OFI TESTING EQUIPMENT, INC.                                           Effective Date:02/25/02



                                  MATERIAL SAFETY DATA SHEET

                            SECTION I         - PRODUCT IDENTIFICATION

Chemical Name:              AMMONIUM HYDROXIDE SOLUTION (10% - 35% NH3)

Trade Name:                 BUFFER SOLUTION, HARDNESS

OFI Part No.                205-04,205-05,205-05-10,205-05-20,205-04-1,205-04-5

Chemical Family:            Ammonium hydroxide soluitons; ammonia aqueous; ammonia solutions

Formula:                    NH4OH:H 2O

                            SECTION II        - HAZARDOUS CONSTITUENTS

CAS #:                             CHEMICAL NAME

1336-21-6                   Ammonium Hydroxide   21.0 to 72.0% (10 to 35% ammonia)

12125-02-9                  Ammonium Chloride    6.0 to 7.5%

                            SECTION III - PHYSICAL PROPERTIES

                            Clear Colorless Liquid / Ammonia Odor

Appearance / Odor:

                            Infinitely Soluble

Solubility:

                            0.9 (28% NH4OH)

Specific Gravity:

                            11.6

pH:

                            No Information Found.

% Volatiles by Vol.:

                            -98 0 F (-72 0C)

Melting Point:

                            ca. 97 0 F (36 0C)

Boiling Point:

                            0.60 NH3

Vapor Density (Air=1):

                            115 @ 68 0F (20 0C)

Vapor Pressure (mmHg):

                            SECTION IV        - FIRE, EXPLOSION AND REACTIVITY

                            Autoignition Temperature: 1204 0F (651 0C), Flammable Limits in Air % by Volume: lel-16, uel-

Fire:

                            25.

Explosion:                  Flammable Vapors may Accumulate in Confined Spaces.

Fire Extinguishing Media:   Use any means Suitable for Extinguishing Surrounding Fire. Use Water Spray to Blanket Fire,

                            Cool Fire Exposed Containers, and to Flush Non-Ignited Spills or Vapors away from Fire.

Special Information:        In the Event of 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.



General Reactivity:         Stable Under Ordinary Conditions of Use and Storage.

Hazardous Decomposition:    Burning may Produce Ammonia, Nitrogen Oxides.



Incompatibilities:          Acids, Acrolein, Dimethyl Sulfate, Halogens, Silver Nitrate, Propylene Oxide, Nitromethane,

                            Silver Oxide, Silver Permanganate, Oleum, Beta-Propiolactone. Most Common Metals.



                            Will Not Occur.

Hazardous Polymerization:

                            SECTION V       - HEALTH HAZARD INFORMATION

Inhalation:                 Vapors and Mists Cause Irritation to the Respiratory Tract. Higher Concentrations can Cause

                            Burns, Pulmonary Edema and Death. Brief Exposure to 5000 ppm can be FATAL.







Ingestion:                  TOXIC! May Cause Corrosion to the Esophagus and Stomach with Perforation and Peritonitis.

                            Symptoms may Include Pain in the Mouth, Chest, and Abdomen, with Coughing, Vomiting and

                            Collapse. Ingestion of as Little as 3 to 4 mL may be FATAL.



Skin:                       Causes Irritation and Burns to the Skin.







Eye Contact:                Vapors Cause Irritation. Splashes Cause Severe Pain, Eye Damage, and Permanent

                            Blindness.



Chronic Exposure:           Repeated Exposure may Cause Damage to Tissues of the Mucous Membranes, Upper

                            Respiratory Tract, Eyes and Skin.

                            SECTION V       - HEALTH, HAZARD INFORMATION (cont.)

Carcinogenic References:    IARC Category- None, NTP Carcinogen - Known: No

Aggravated by Exposure:     Persons with Pre-Existing Eye Disorders or Impaired Respiratory Function may be More

                            Susceptible to the Effects of this Material.

                            SECTION VI - EMERGENCY & FIRST AID PROCEDURES

Inhalation:                 Remove to Fresh Air. If Not Breathing, Give Artificial Respiration. If Breathing is Difficult, Give

                            Oxygen. Call a Physician Immediately.

Ingestion:                  If Swallowed, DO NOT INDUCE VOMITING! Give Large Quantities of Water. Never Give

                            Anything by Mouth to an Unconscious Person. Get Medical Attention Immediately.

Skin:                       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.

Eyes:                       Immediately Flush Eyes with Plenty of Water for at Least 15 Minutes, Lifting Lower and Upper

                            Eyelids Occasionally. Get Medical Attention Immediately.

                            SECTION VII - INDUSTRIAL HYGIENE MEASURES

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.

Airborne Exposure Limits:   OSHA Permissible Exposure Limit (PEL): 50 ppm NH3 (STEL), ACGIH Threshold Limit Value

                            (TLV): 25 ppm NH3 (TWA) 35 ppm (STEL).

Personal Respirators:       If the Exposure Limit is Exceeded, a Full-Facepiece Respirator with an Ammonia/Methylamine

(NIOSH APPROVED)            Cartridge 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.

                            For Emergencies or Instances where the Exposure L         evels are not Known, use a Full-

                            Facepiece Positive-Pressure, Air Supplied Respirator.

Skin Protection:            Wear Impervious Protective Clothing, Including Boots, Gloves, Lab Coat, Apron or Coveralls,

                            as Appropriate, to Prevent Skin Contact. Neoprene and Nitrile Rubber are Recommended.

Eye Protection:             Use Chemical Safety Goggles and/or Full Face Shield where Splashing is Possible. Maintain

                            Eye Wash Fountain and Quick-Drench Facilities in Work Area.

                            SECTION VIII - INDUSTRIAL HYGIENE MEASURES

Accidental Release:         Ventilate Area of Leak or Spill. Keep Unnecessary and Unprotected People away from Area of

                            of Spill. Wear Appropriate Personal Protective Equipment as Specified in Section 7. Contain

                            and Recover Liquid when Possible. Do Not Flush Caustic Residues to the Sewer. Residues

                            from Spills can be Diluted with Water, Neutralized with Dilute Acid such as Acetic, Hydrochloric

Disposal:                   or Sulfuric. Absorb Neutralized Caustic Residue on Clay, Vermiculite or other Inert Substance

                            and Package in a Suitable Container for Disposal. US Regulations (CERCLA) require

                            Reporting Spills and Releases to Soil, Water and Air in Excess of Reportable Quantities.

Environmental Fate:         This Material is Not Expected to Significantly Bioaccumulate.

                            SECTION IX - SPECIAL PRECAUTIONS

Handling and Storage:       Keep in Tightly Closed Container, Stored in a Cool, Dry, Ventilated Area. Protect Against

                            Physical Damage. Separate from Incompatibilities. Store below 77 0F (25 0C). Protect from

                            Direct Sunlight. Containers of this Material May be Hazardous when Empty

                            Since they Retain Product Residues (Vapors, Liquid).

                            SECTION X       - DOT SHIPPING REQUIREMENTS

Shipping Name:              AMMONIA, SOLUTION (WITH 10 - 35% AMMONIA)

Hazard Class:               8

Identification No.:         UN2672, Packing Group III

NFPA Rating:                HEALTH-3, FLAMMABILITY-1, REACTIVITY-2

                            SECTION XI - IN CASE OF EMERGENCY

(713) 880 - 9884                  OFI TESTING EQUIPMENT, INC. - Regular Business Hours

(713) 880 - 9885                  OFI TESTING EQUIPMENT, INC. - After Regular Business Hours