Monopotassium Phosphite 50% 13977-65-6

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**** SECTION 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION ****

MSDS Name: Monopotassium Phosphite 50% water solution

Synonyms:   Potassium Dihydrogen Phosphite 50% water solution

Molecular Formula:            KH2PO3 .

Molecular Weight:             120.096

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**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

         Hazard Symbols: None Listed.

         Risk Phrases: None Listed.

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**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW

May cause eye and skin irritation.

    May cause respiratory and digestive tract irritation.

    Target Organs: None known.

Potential Health Effects

    Eye:         May cause mechanical irritation.

    Skin:     May cause skin irritation. Low hazard for usual industrial handling.

Ingestion:  May cause irritation of the digestive tract. Low hazard for usual industrial handling.

         The toxicological properties of this substance have not been fully investigated.

    Inhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

    Chronic:  Ingestion of large doses may cause nausea, vomiting, and diarrhea. Chronic exposure to this product may cause calcium phosphate deposition in the kidneys.

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**** SECTION 4 - FIRST AID MEASURES ****

Eyes:    Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Skin:    Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.

Ingestion: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation: Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Notes to Physician: Persons with impaired kidney function may be more susceptible to the effects of this substance. Treat symptomatically and supportively.

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**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:

        As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.

Extinguishing Media:

        Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Autoignition Temperature:   Not applicable.

Flash Point:               Not applicable.

Explosion Limits, lower:    Not available.

Explosion Limits, upper:    Not available.

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**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated in Section 8.

Spills/Leaks:

         Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation.

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**** SECTION 7 - HANDLING AND STORAGE ****

Handling:

        Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Storage:

        Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

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**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:

        Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.

Exposure Limits: none listed

Personal Protective Equipment

    Eyes:       Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.

    Skin:       Wear appropriate protective gloves to prevent skin exposure.

    Clothing:    Wear appropriate protective clothing to prevent skin exposure.

    Respirators:  A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

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**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State:   transparent liquid

Color:          colorless or almost colorless

Odor:          faint to slight odor

pH:            pH 4.0 – 5.0

Solubility in water:            Soluble.

Molecular Formula:            KH2PO3

Molecular Weight:             120.096