Disodium pytophosphate

Iupac Name：disodium;[hydroxy(oxido)phosphoryl] hydrogen phosphate

Molecular Weight：265.902402

Modify Date.: 2022-10-31 06:29

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

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1. Names and Identifiers

1.1 Name: Disodium pytophosphate
1.2 Synonyms: Amyloid Precursor Protein β, Secreted ANTI-DSPP (N-TERM) antibody produced in rabbit Dentin sialophosphoprotein dinatriumpyrophosphat Disodium dihydrogen diphosphate DISODIUM PYROPHOSPHATE DisodiuM pytophospha disodiumdiphosphate DSPP EINECS 231-835-0 Food Grade Sodium Acid Pyrophosphate MFCD00014246 Phosphonate, P,P'-oxybis-, sodium salt (1:2) SAPP SAPP 28 SAPP 40 SODIUM PYROPHOSPHATE DIBASIC BIOULTR SodiuM pyrophosphate dibasic practical grade sodiumpyrophosphate,acid TwosodiuM pyrophosphatetwo hydrogen

1.3 CAS No.: 7758-16-9

1.4 CID: 24451

1.5 EINECS(EC#): 231-835-0

1.6 Molecular Formula: H2Na2O7P2 (isomer)

1.7 Inchi: InChI=1S/2Na.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,6)/q2*+1;/p-2

1.8 InChkey: GYQBBRRVRKFJRG-UHFFFAOYSA-L

1.9 Canonical Smiles: OP(=O)([O-])OP(=O)(O)[O-].[Na+].[Na+]

1.10 Isomers Smiles: OP(=O)([O-])OP(=O)(O)[O-].[Na+].[Na+]

2. Properties

2.1 Density: 2.311 (25 C)

2.1 Melting point: 988 DEG C

2.1 Precise Quality: 221.90700

2.1 PSA: 149.57000

2.1 logP: 0.06480

2.1 Solubility: H2O: 0.1?M at?20?°C, clear, colorless

2.2 Appearance: white powder

2.3 Storage: Ambient temperatures.

2.4 Chemical Properties: white powder

2.5 Color/Form: CRYSTALS
COLORLESS, TRANSPARENT CRYSTALS OR WHITE POWDER
White powder or granules.

2.6 Decomposition: WHEN HEATED TO DECOMPISITION IT EMITS TOXIC FUMES OF PHOSPHORUS OXIDES AND Na2O.

2.7 PH: Between 3,7 and 5,0 (1?% solution)

2.8 Water Solubility: H2O: 0.1?M at?20?°C, clear, colorless

2.9 Spectral Properties: INDEX OF REFRACTION: 1.425

2.10 Stability: Stable.

2.11 StorageTemp: -70°C

3. Use and Manufacturing

3.1 Usage: Chiefly in baking powders.

4. Safety and Handling

4.1 Symbol: GHS07

4.1 Hazard Codes: Xi

4.1 Signal Word: Warning

4.1 Risk Statements: 36

4.1 Safety Statements: 24/25

4.1 Exposure Standards and Regulations: Tetrasodium pyrophosphate used as a sequestrant in food for human consumption is generally recognized as safe when used in accordance with good manufacturing practice.
Tetrasodium pyrophosphate used as a sequestrant in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.

4.2 Other Preventative Measures: The worker should immediately wash the skin when it becomes contaminated.
Work clothing that becomes wet or significantly contaminated should be removed and replaced.
Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises.

4.3 Hazard Declaration: H319

4.3 DisposalMethods: 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.

4.4 RIDADR: NONH for all modes of transport

4.4 Safety Profile: Poison by intravenous route. Moderately toxic by ingestion and subcutaneous routes. An irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of POx, and Na2O. Disodium pytophosphate Preparation Products And Raw materials Preparation Products

4.5 Caution Statement: P305 + P351 + P338

4.5 Formulations/Preparations: TSPP IS USED IN VANILLA INSTANT PUDDING-MIX AT LEVELS OF 2.8 G/113.4 G OF MIX 2.8 G/127.6 G OF CHOCOLATE MIX. PATENT 2,607,692. /FROM TABLE/
CURAFOS USED IN.../MICROBIOLOGICAL INHIBITORY/ EXPERIMENTS CONTAINED 15% TSPP, 70% STPP, AND 15% SHMP; FIBRISOL CONTAINED 25% SAPP, 15% TSPP, 10% SHMP, AND 50% NACL. /PHOSPHATES/
TSPP IS USED IN VANILLA INSTANT PUDDING-MIX AT LEVELS OF 1.5 G/92.3 G OF MIX & 1.5 G/113.8 G OF CHOCOLATE MIX. PATENT 2,801,924. TSPP IS USED IN UNFLAVORED INSTANT PUDDING-MIX AT 2.2 G/100.0 G OF MIX. PATENT 3,231,391. /FROM TABLE/
GRADES: PURE CRYSTALS; DRIED; FUSED; CP; FCC.
MANUFACTURERS: ...COMMERCIAL MIXTURES OF PHOSPHATES NORMALLY USED IN CURING MEAT PRODUCTS /ARE/ (CURAFOS AND FIBRISOL, MANUFACTURED BY JA BENCKISER)...

4.6 WGK Germany: 2

4.6 RTECS: UX6475000

4.6 Protective Equipment and Clothing: Wear appropriate personal protective clothing to prevent skin contact.
Wear appropriate eye protection to prevent eye contact.
Eyewash fountains should be provided in areas where there is any possbility that workers could be exposed to solutions containing the substance; this is irrespective of the recommendation involving the wearing of eye protection. /Solution/

4.7 Reactivities and Incompatibilities: Strong acids.

4.8 Report: Reported in EPA TSCA Inventory.

4.9 Safety: Safety Statements?of Disodium pyrophosphate (CAS NO.7758-16-9): 24/25?
S24/25: Avoid contact with skin and eyes.
WGK Germany: 2
RTECS: UX6475000
Poison by intravenous route. Moderately toxic by ingestion and subcutaneous routes. An irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of PO_x and Na₂O.

4.10 Specification: Other names of Disodium pyrophosphate (CAS NO.7758-16-9):
Diphosphoric acid, disodium salt;Disodium diphosphate;Disodium dihydrogen ;pyrophosphate;Sodium acid pyrophosphate?
?

4.11 Toxicity

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	1gm/kg (1000mg/kg)	?	Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 24, 1957.
mouse	LD50	intravenous	59mg/kg (59mg/kg)	?	Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
mouse	LD50	oral	2650mg/kg (2650mg/kg)	?	Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
mouse	LD50	subcutaneous	480mg/kg (480mg/kg)	?	Arzneimittel-Forschung. Drug Research. Vol. 7, Pg. 445, 1957.
rabbit	LD	skin	> 300mg/kg (300mg/kg)	?	Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 47, 1990.

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5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Eye irritation, Category 2

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word	Warning
Hazard statement(s)	H319 Causes serious eye irritation
Precautionary statement(s)
Prevention	P264 Wash ... thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response	P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P337+P313 If eye irritation persists: Get medical advice/attention.
Storage	none
Disposal	none

2.3 Other hazards which do not result in classification

none

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6. Other Information

6.0 Usage: Sodium pyrophosphate, 200mM buffer soln. is used in the laboratory as a buffering agent. DSPP has been used as a chelating agent in antimicrobial studies. Tetrabasic pyrophosphate or TSPP (sc-203404; sc-236921) has shown to be useful in the preparation of an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis of soil samples. It is a popular leavening agent found in baking powders.

6.1 Merck: 13,8643

6.2 Chemical Properties: white powder

6.3 Uses: Chiefly in baking powders.

6.4 Uses: Sodium Pyrophosphate is a leavening agent, preservative, sequestrant, and buffer which is mildly acidic with a ph of 4.1. It is moderately soluble in water, with a solubility of 15 g in 100 ml at 25°c. It is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process. It is used in baking powder as a leavening agent. It is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium. It is used to sequester metals in processed potatoes. It is also termed sapp, sodium acid pyrophosphate, acid sodium pyrophosphate, disodium diphosphate, and disodium dihydrogen pyrophosphate.

6.5 Uses: Sodium Pyrophosphate Dibasic is anhydrous form, pyrophosphate salt used in buffers.

6.6 General Description: The APP (amyloid precursor protein) gene is mapped to human chromosome 21q21.3. It encodes a integral membrane protein. APPα is a soluble protein generated by sequential cleavage with α and γ secretase.

7. Computational chemical data

Molecular Weight: 265.902402g/mol
Molecular Formula: H₂Na₂O₇P₂
Compound Is Canonicalized: True
XLogP3-AA: null
Exact Mass: 221.90711496
Monoisotopic Mass: 221.90711496
Complexity: 143
Rotatable Bond Count: 2
Hydrogen Bond Donor Count: 2
Hydrogen Bond Acceptor Count: 7
Topological Polar Surface Area: 130
Heavy Atom Count: 11
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Isotope Atom Count: 0
Covalently-Bonded Unit Count: 3
CACTVS Substructure Key Fingerprint: AAADcQAAODMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACCAAAAAAAAAAAAAAABAAQAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

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Food Grade Sodium Acid Pyrophosphate CAS: 7758-16-9