Pyrophosphoric acid
-
Pyrophosphoric acid
structure -
-
CAS No:
2466-09-3
-
Formula:
H4O7P2
-
Chemical Name:
Pyrophosphoric acid
-
Synonyms:
Diphosphoric acid;Pyrophosphoric acid;Diphosphoric acid (H4P2O7);133883-41-7;1531584-96-9
- Categories:
-
CAS No:
Description
White to very pale yellow glassy solid
Solid
Diphosphoric acid is an acyclic phosphorus acid anhydride obtained by condensation of two molecules of phosphoric acid. It has a role as an Escherichia coli metabolite. It is a phosphorus oxoacid and an acyclic phosphorus acid anhydride. It is a conjugate acid of a diphosphate(1-).
Pyrophosphoric acid Basic Attributes
177.98
177.98
219-574-0
4E862E7GRQ
289196
DTXSID4075035
2809201900
Characteristics
143.91000
-3.42
Solid
2.4±0.1 g/cm3
61 °C
1.560
709g/100mL H2O (23°C); soluble alcohol, ether [MER06]
145.58 Ų [M+Na]+ [CCS Type: DT, Method: stepped-field]|144.7 Ų [M+Na]+
Safety Information
III
8
UN 3260 8/PG 2
3
22-34
26-36/37/39-45
JL6672500
C
P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P405, P501
H302
|Danger|H302 (46.91%): Harmful if swallowed [Warning Acute toxicity, oral]|P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P405, and P501|Aggregated GHS information provided by 114 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P363, P405, and P501
Pyrophosphoric acid Use and Manufacturing
The production of pyrophosphorus includes a method of dehydrating and concentrating 85% of commercially available phosphoric acid, dissolving phosphorus pentoxide in 85% of phosphoric acid, and a method of reacting phosphoryl chloride with 85% of phosphoric acid. The 85% phosphoric acid concentration method avoids local overheating of commercially available 85% phosphoric acid and heats it to about 180°C under reduced pressure for dehydration (100g 85% phosphoric acid has a weight loss of about 25-30g) to produce pyrophosphoric acid. Method of dissolving P2O5 in 85% phosphoric acid Under vigorous stirring, add P2O5 to the phosphoric acid in a calculated amount (100g85% phosphoric acid plus 95-100g P2O5) little by little, and dissolve it while heating until it becomes transparent. Add water to the generated pyrophosphoric acid to adjust the P2O5 content to about 76% to 79%. The pyrophosphoric acid is naturally placed (to keep moisture-proof) to form crystals, and it takes two to three days to form crystals under ice cooling to produce pyrophosphoric acid. Method of seeding liquid pyrophosphate. This is a method for mass production of high-purity crystalline pyrophosphate (type I or type II). The commercially available polyphosphoric acid (also called 116% phosphoric acid) containing 84% P2O5 is diluted with water Make liquid pyrophosphoric acid (P2O579.76%), add an appropriate amount (10%-50% by weight) of type I or type II pyrophosphoric acid seed crystals, in a dry nitrogen stream to prevent moisture, stir at 30-50℃, After an induction period of 60 to 180 min, crystalline pyrophosphate can be prepared with a purity of >95%.
Used as a catalyst, metal refining, organic peroxide stabilizer. Used to adjust the Ph value of the electroplating solution in the copper electroplating process, and also used in other electroplating. Used as a catalyst and hiding agent, etc. Water retention agent, quality improver, pH adjuster, metal chelating agent.
Computed Properties
Molecular Weight:177.98
XLogP3:-3.2
Hydrogen Bond Donor Count:4
Hydrogen Bond Acceptor Count:7
Rotatable Bond Count:2
Exact Mass:177.94322646
Monoisotopic Mass:177.94322646
Topological Polar Surface Area:124
Heavy Atom Count:9
Complexity:147
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
Recommended Suppliers of Pyrophosphoric acid
-
![China]()
CN
5 YRS
Business licensedTrader Supplier of Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals,Biochemicals,Pharmaceuticals,Screening Compounds,Food Additives -
![China]()
CN
2 YRS
Business licensedTrader Supplier of pharmaceutical intermediates,excipients,plant extracts,food additives,CDMO,fine cheimcals,Octadecanedioic acid,Eicosanedioic Acid -
![China]()
CN
3 YRS
Business licensedTrader Supplier of CHEMICALS,REAGENTSInquiryCAS No.: 2466-09-3Grade: Pharmaceutical GradeContent: 99% -
![China]()
CN
3 YRS
Business licensedTrader Supplier of api,Intermediates,Organic Chemistry,Inorganic Chemistry,Daily Chemicals,Cosmetic Raw Materals,CATALYST AND AUXILIARY,FLAVORS AND FRAGRANCES,Chemical Pesticides,ADDITIVEInquiryUnit Price: $15 /KG EXWCAS No.: 2466-09-3Grade: Industrial GradeContent: 99%
Learn More Other Chemicals
-
3,5-DIBROMO-2-[[[(3,5-DINITROBENZOYL)AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID
535965-38-9
-
3,5-DIBROMO-2-[[[[(2-CHLOROPHENOXY)ACETYL]AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID
532386-89-3
-
3,5-DIBROMO-2-[[[(4-METHYL-3-NITROBENZOYL)AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID
532943-48-9
-
3,5-DIBROMO-2-[[[[3-(2-FURANYL)-1-OXO-2-PROPENYL]AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID Formula
586392-09-8
-
3,5-DIBROMO-2-[[[[(2-METHYLPHENOXY)ACETYL]AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID Formula
531548-30-8
-
2-(1,8-dibromo-16,18-dioxo-17-azapentacyclo[6.6.5.0~2,7~.0~9,14~.0~15,19~]nonadeca-2,4,6,9,11,13-hexaen-17-yl)benzoic acid Formula
333340-54-8
-
3,5-DIBROMO-2-[[[[3-(PHENOXYMETHYL)BENZOYL]AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID Structure
586393-79-5
-
3,5-DIBROMO-2-[[[(4-CHLOROBENZOYL)AMINO]THIOXOMETHYL]AMINO]-BENZOIC ACID Structure
531530-32-2
-
What is 2-Cyclopentyl-3-(2,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-oxo-4-isoquinolinecarboxylic acid
400073-92-9
-
What is 9-Octadecenoic acid (9Z)-, compd. with N,N-dimethylcyclohexanamine (1:1)
65122-23-8