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 TETRA POTASSIUM PYROPHOSPHATE (TKPP)

SYNONYMS:

Diphosphoric acid, tetrapotassium salt; Phosphosol;
Tetra-Potassium Pyrophosphate; Potassium diphosphate; Tetrapotassium; TKPP; Diphosphorate; Tetrapotassium pyrophosphate; normal potassium pyrophosphate; Tetrakaliumpyrophosphat (German); Pirofosfato de tetrapotasio (Spanish); Pyrophosphate de tétrapotassium (French);

 

 

 

 

 

CAS NO.:

7320-34-5

EINECS NO.:

230-785-7

FORMULA:

K4P2O7

H.S. CODE:

28353900

CLASS NO.:

N/A

UN NO.:

N/A

NFPA:

2-0-2-E

DESCRIPTION:

Hygroscopic white crystal

 

APPLICATION

Water softener; metal cleaner; soap and detergent builder; sequestering agent; in electrodeposition of metals; enamelling improvement; tin plating; china-clay purification; dyeing; oil-drilling muds; synthetic rubber production; cleaning agents and detergents - high solubility, hardness stabilization, soil dispersion; toothpaste - prevention of tarter.

SPECIFICATION & PACKING

TECH GRADE

APPEARANCE White Powder

ASSAY    96.0 % min

pH   10.0 - 10.7 (1% sol.)

CHLORIDE(Cl)      0.01 % max

IRON(Fe)       0.01 % max

FOOD GRADE

APPEARANCE White Powder

ASSAY    96.0 % min

pH   10.0 - 10.7 (1% sol.)

CHLORIDE(Cl)      0.01% max

SULFATE(SO4)      0.02% max

ARSENIC(As) 2ppm max

Heavy Metal(Pb)  20ppm max

loss ON DRYING   0.5% max

Packing: 25kg/bag.

Storage: No specific storage is required. Use shelves or cabinets sturdy enough to bear the weight of the chemicals. Be sure that it is not necessary to strain to reach materials, and that shelves are not overloaded.

RAW MATERIAL:

N/A

END GOODS:

N/A

REMARKS:

N/A

MATERIAL SAFE DATA SHEETS

MATERIAL SAFETY DATA SHEET

Section 1: Chemical Product and Company Identification

Product Name: Potassium pyrophosphate

CAS#: 7320-34-5

RTECS: JL6735000

TSCA: TSCA 8(b) inventory: Potassium pyrophosphate

CI#: Not applicable.

Synonym: Diphosphoric acid, tetrapotassium salt

Chemical Name: Tetrapotassium pyrophosphate trihydrate

Chemical Formula: K4P2O7.3(H2O)

Section 2: Composition and Information on Ingredients

Composition:

Name                               CAS #          % by Weight

Potassium pyrophosphate          7320-34-5              100

Toxicological Data on Ingredients: Potassium pyrophosphate: ORAL (LD50): Acute: 2980 mg/kg [Rat.]. DERMAL (LD50):Acute: 7940 mg/kg [Rabbit.].

Section 3: Hazards Identification

Potential Acute Health Effects:

Hazardous in case of eye contact (irritant), of ingestion, of inhalation. Slightly hazardous in case of skin contact (irritant). Non-sensitizer for skin. Non-permeator by skin.

Potential Chronic Health Effects:

Hazardous in case of eye contact (irritant), of ingestion, of inhalation.

Slightly hazardous in case of skin contact (irritant).

CARCINOGENIC EFFECTS: Not available.

MUTAGENIC EFFECTS: Not available.

TERATOGENIC EFFECTS: Not available.

DEVELOPMENTAL TOXICITY: Not available.

The substance is toxic to lungs, mucous membranes.

Repeated or prolonged exposure to the substance can produce target organs damage.

Section 4: First Aid Measures

Eye Contact:

Check for and remove any contact lenses. Immediately flush eyes with running water for at least 15 minutes,

keeping eyelids open. Cold water may be used. Do not use an eye ointment. Seek medical attention.

Skin Contact:

After contact with skin, wash immediately with plenty of water. Gently and thoroughly wash the contaminated skin

with running water and non-abrasive soap. Be particularly careful to clean folds, crevices, creases and groin.

Cold water may be used. Cover the irritated skin with an emollient. If irritation persists, seek medical attention.

Wash contaminated clothing before reusing.

Serious Skin Contact: Not available.

Inhalation: Allow the victim to rest in a well ventilated area. Seek immediate medical attention.

Serious Inhalation: Not available.

Ingestion:

Do not induce vomiting. Loosen tight clothing such as a collar, tie, belt or waistband. If the victim is not

breathing, perform mouth-to-mouth resuscitation. Seek immediate medical attention.

Serious Ingestion: Not available.

Section 5: Fire and Explosion Data

Flammability of the Product: Non-flammable.

Auto-Ignition Temperature: Not applicable.

Flash Points: Not applicable.

Flammable Limits: Not applicable.

Products of Combustion: Not available.

Fire Hazards in Presence of Various Substances: Not applicable.

Explosion Hazards in Presence of Various Substances:

Risks of explosion of the product in presence of mechanical impact: Not available.

Risks of explosion of the product in presence of static discharge: Not available.

Fire Fighting Media and Instructions: Not applicable.

Special Remarks on Fire Hazards: Keep container tightly closed.

Special Remarks on Explosion Hazards: Not available.

Section 6: Accidental Release Measures

Small Spill:

Use appropriate tools to put the spilled solid in a convenient waste disposal container. If necessary: Neutralize

the residue with a dilute solution of acetic acid. Finish cleaning by spreading water on the contaminated

surface and dispose of according to local and regional authority requirements.

Large Spill:

Use a shovel to put the material into a convenient waste disposal container. Neutralize the residue with a dilute

solution of acetic acid. Finish cleaning by spreading water on the contaminated surface and allow to evacuate

through the sanitary system.

Section 7: Handling and Storage

Precautions:

Do not ingest. Do not breathe dust. Avoid contact with eyes Wear suitable protective clothing In case of

insufficient ventilation, wear suitable respiratory equipment If ingested, seek medical advice immediately and

show the container or the label. Keep away from incompatibles such as moisture.

Storage:

No specific storage is required. Use shelves or cabinets sturdy enough to bear the weight of the chemicals. Be sure that it is not necessary to strain to reach materials, and that shelves are not overloaded.

Section 8: Exposure Controls/Personal Protection

Engineering Controls:

Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below

recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to

airborne contaminants below the exposure limit.

Personal Protection:

Splash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.

Gloves.

Personal Protection in Case of a Large Spill:

Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used

to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist

BEFORE handling this product.

Exposure Limits: Not available.

Section 9: Physical and Chemical Properties

Physical state and appearance: Solid. (Solid powder.)

Odor: Odorless.

Taste: Not available.

Molecular Weight: 330.34 g/mole

Color: White.

pH (1% soln/water): 10 [Basic.]

Boiling Point: Decomposes.

Melting Point: 1090°C (1994°F)

Critical Temperature: Not available.

Specific Gravity: 2.33 (Water = 1)

Vapor Pressure: Not applicable.

Vapor Density: Not available.

Volatility: Not available.

Odor Threshold: Not available.

Water/Oil Dist. Coeff.: Not available.

Ionicity (in Water): Not available.

Dispersion Properties: See solubility in water.

Solubility:

Easily soluble in cold water, hot water.

Insoluble in methanol, diethyl ether, n-octanol.

Section 10: Stability and Reactivity Data

Stability: The product is stable.

Instability Temperature: Not available.

Conditions of Instability: Not available.

Incompatibility with various substances: Reactive with moisture.

Corrosivity: Non-corrosive in presence of glass.

Special Remarks on Reactivity: Hygroscopic; keep container tightly closed.

Special Remarks on Corrosivity: Not available.

Polymerization: No.

Section 11: Toxicological Information

Routes of Entry: Eye contact. Inhalation. Ingestion.

Toxicity to Animals:

Acute oral toxicity (LD50): 2980 mg/kg [Rat.].

Acute dermal toxicity (LD50): 7940 mg/kg [Rabbit.].

Chronic Effects on Humans: The substance is toxic to lungs, mucous membranes.

Other Toxic Effects on Humans:

Hazardous in case of ingestion, of inhalation.

Slightly hazardous in case of skin contact (irritant).

Non-sensitizer for skin. Non-permeator by skin.

Special Remarks on Toxicity to Animals: Not available.

Special Remarks on Chronic Effects on Humans: To the best of our knowledge, the toxicological properties of this

substance have not been thoroughly investigated.

Special Remarks on other Toxic Effects on Humans: Material is irritating to mucous membranes and upper respiratory

tract.

Section 12: Ecological Information

Ecotoxicity: Not available.

BOD5 and COD: Not available.

Products of Biodegradation:

Possibly hazardous short term degradation products are not likely. However, long term degradation products may

arise.

Toxicity of the Products of Biodegradation: The products of degradation are more toxic.

Special Remarks on the Products of Biodegradation: Not available.

Section 13: Disposal Considerations

Waste Disposal:

Section 14: Transport Information

DOT Classification: Not a DOT controlled material (United States).

Identification: Not applicable.

Special Provisions for Transport: Not applicable.

Section 15: Other Regulatory Information

Federal and State Regulations: TSCA 8(b) inventory: Potassium pyrophosphate

Other Regulations: OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).

Other Classifications:

WHMIS (Canada): CLASS D-2A: Material causing other toxic effects (VERY TOXIC).

DSCL (EEC): R36- Irritating to eyes.

HMIS (U.S.A.):

Health Hazard: 2

Fire Hazard: 0

Reactivity: 2

Personal Protection: E

National Fire Protection Association (U.S.A.):

Health: 2

Flammability: 0

Reactivity: 2

Specific hazard:

Protective Equipment:

Gloves.

Lab coat.

Dust respirator. Be sure to use an

approved/certified respirator or

equivalent. Wear appropriate respirator

when ventilation is inadequate.

Splash goggles.

Section 16: Other Information

References:

-The Sigma-Aldrich Library of Chemical Safety Data, Edition II.

-Hawley, G.G.. The Condensed Chemical Dictionary, 11e ed., New York N.Y., Van Nostrand Reinold, 1987.

Other Special Considerations: Not available.

 

 

CERTIFICATION OF ANALYSIS

TETRA POTASSIUM PYROPHOSPHATE
EXPIRY LIFE: TWO YEARS