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Disodium pyrophosphate

Disodium pyrophosphate structure

Disodium pyrophosphate 

structure
  • CAS No:

    7758-16-9

  • Formula:

    H4O7P2.2Na

  • Chemical Name:

    Disodium pyrophosphate

  • Synonyms:

    Diphosphoric acid,sodium salt (1:2);Pyrophosphoric acid,disodium salt;Diphosphoric acid,disodium salt;Sodium pyrophosphate (Na2H2P2O7);Disodium dihydrogen pyrophosphate;Disodium pyrophosphate;Dihydrogen disodium pyrophosphate;Disodium acid pyrophosphate;Disodium dihydrogen diphosphate;Disodium diphosphate;Disodium pyrophosphate (Na2H2P2O7);Sodium hydrogen phosphate (Na2H2P2O7);Disodium dihydrogen diphosphate (Na2H2P2O7);SAPP-RD 1;SAPP;SAPP 40;E 450i;10101-84-5

  • Categories:

    Cosmetic Ingredient  >  Anticorrosive

Description

white powder


DryPowder; DryPowder, PelletsLargeCrystals; OtherSolid|White powder or grains

Disodium pyrophosphate Basic Attributes

221.939

221.907

231-835-0

H5WVD9LZUD

DTXSID8028842

White crystalline powder

28353990

Characteristics

149.57

0.0648

white powder

2.311 g/cm3 (25°C)

988°C

H2O: 0.1 M at 20 °C, clear, colorless

Warehouse ventilation dry at low temperature

Oral - mouse LD50: 2650 mg / kg

Between 3,7 and 5,0 (1 % solution)

Decomp @ 220 °C; water soln having acid reaction|MONOCLINIC CRYSTALS; SOLUBILITY IN WATER @ 0 °C: 6.9 G/100 CC; SOLUBILITY IN WATER @ 40 °C: 35 G/100 CC; INDEX OF REFRACTION: 1.4599, 1.4645, 1.4649 /HEXAHYDRATE/

Safety Information

NONH for all modes of transport

2

36

S24/25-S25

UX6475000

Xi

Stable.

P305 + P351 + P338

H319

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Sodium acid pyrophosphate used as a general purpose food additive in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.|Sodium acid pyrophosphate used as a multiple purpose GRAS food substance in food for human consumption is generally recognized as safe when used in accordance with good manufacturing practice.

WHO; Diseases Caused by Phosphorus and Its Toxic Compounds; Early Detection of Occupational Diseases pg 53-62 (1986). Review of diseases and health related effects resulting from exposure to phosphorus or phosphorus cmpd.

Not Classified| |Danger|H302 (29.19%): Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P280, P301+P312, P305+P351+P338, P310, P330, P337+P313, and P501|Aggregated GHS information provided by 440 companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

An irritant to skin, eyes, and mucous membranes.

Toxicity

LD50 Mouse oral 2650 mg/kg|LD50 Mouse sc 480 mg/kg|LD50 Mouse iv 59 mg/kg

Disodium pyrophosphate Use and Manufacturing

Methods of Manufacturing

REACTION OF SODIUM CARBONATE WITH PHOSPHORIC ACID, FOLLOWED BY HEATING OF THE RESULTING MONOSODIUM PHOSPHATE TO 220 DEGREES C|Incomplete decomp of monobasic sodium phosphate. /Hexahydrate/

Uses

Electroplating, metal cleaning and phosphatising, drilling muds, baking powders and leavening agent, buffer, sequestrant, peptising agent in cheese and meat products, frozen desserts.


Corrosion inhibitors and anti-scaling agents


Metal products not covered elsewhere

Production

10,000,000 - 50,000,000 lb|(1972) 2.48X10+10 GRAMS|(1975) 2.14X10+10 GRAMS

52-56% AS A LEAVENING AGENT IN BAKING POWDERS & PREPARED MIXES (FOOD GRADE); 33-37% IN OIL WELL DRILLING MUDS (TECHNICAL GRADE); 7-11% IN DETERGENT BUILDERS & WATER TREATMENT(1973)

GRADES: Technical; Food; FCC. /Hexahydrate/

All other chemical product and preparation manufacturing|Diphosphoric acid, sodium salt (1:2): ACTIVE|...SODIUM ACID PYROPHOSPHATE.../IS/ INGREDIENT OF BAKING POWDERS & OTHER LEAVENING MIXTURES.|MID /MEAT INSPECTION DIV/ LIMITATIONS: TO DECR AMT OF COOKED-OUT JUICES IN CURED HAMS, PORK SHOULDER PICNICS & LOINS, CANNED HAMS & PORK SHOULDER PICNICS, CHOPPED HAM, & BACON; 5.0% OF PHOSPHATE IN PICKLE @ 10% PUMP LEVEL; 0.5% OF PHOSPHATE IN PRODUCT (ONLY CLEAR SOLN MAY BE INJECTED INTO PRODUCT).

EPA Safer Chemical Functional Use Classes -> Oxidants and Oxidant Stabilizers|Safer Chemical Classes -> Yellow triangle - The chemical has met Safer Choice Criteria for its functional ingredient-class, but has some hazard profile issues|Food additives|Cosmetics -> Buffering; Chelating

Food Additives -> ACIDITY_REGULATOR; RAISING_AGENT; SEQUESTRANT;

Computed Properties

Molecular Weight:221.94
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:7
Rotatable Bond Count:2
Exact Mass:221.90711496
Monoisotopic Mass:221.90711496
Topological Polar Surface Area:130
Heavy Atom Count:11
Complexity:143
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

Downstream Products

Price Analysis

Make your Disodium pyrophosphate purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Disodium pyrophosphate prices .

Drug Function and Efficacy

Tartar control agent working synergistically with tetrasodium pyrophosphate to prevent mineralization of dental plaque

This ingredient has been used in drugs with the following functions (note: it does not mean that the ingredient itself has the following health functions)

Related Drugs

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