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diphosphoric acid

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Origin: China

Cas No: 2466-09-3

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
Classification:
Carboxylic Acid
CAS No.:
2466-09-3
Other Names:
Pyrophosphoric acid
MF:
H4O7P2
EINECS No.:
219-574-0
Place of Origin:
Shandong, China
Grade Standard:
Agriculture Grade, Industrial Grade
Purity:
50%min, 95% min
Appearance:
Colourless acicular, Colourless acicular crystalline or light yellow sticky liquid
Application:
Catalyst
Brand Name:
Haihang
Model Number:
HHMSY 2466-09-3
Product name:
Pyrophosphoric acid
CAS:
2466-09-3
sample:
available
Assay:
≥95%
Chloride:
≤0.002%
Sulfate (SO4):
Qualified
Fe:
≤0.02%
stock:
enough stock
Packaging&Delivery
Packaging Details
31.5 kg/drum. 25 L/drum
Port
shanghai,tianjin,qingdao

Property

CAS No.: 2466-09-3 Formula: H4O7P2 Molecular Weight: 177.97500

Description

Pyrophosphoric acid, also known under the name diphosphoric acid, is colorless, odorless, hygroscopic and is soluble in water, diethyl ether, and ethyl alcohol. The anhydrous acid has two different forms, which melt at 54.3°C and 71.5°C. It is best prepared by ion exchange from sodium pyrophosphate or by reacting hydrogen sulfide with lead pyrophosphate. When phosphoric acid is dehydrated pyrophosphoric acid is produced as one of the products. When molten pyrophosphoric acid rapidly forms an equilibrium mixture of phosphoric acid, pyrophosphoric acid and polyphosphoric acids. The percentage by weight of pyrophosphoric acid is around 40% and it is difficult to recrystallise from the melt. In aqueous solution pyrophosphoric acid like all polyphosphoric acids hydrolyses and eventually an equilibrium is established between phosphoric acid pyrophosphoric acid and polyphosphoric acids. When highly diluted an aqueous solution of pyrophosphoric acid contains only phosphoric acid.
Pyrophosphoric acid is a medium strong inorganic acid. Anions, salts, and esters of pyrophosphoric acid are called pyrophosphates.
While pyrophosporic acid is corrosive, it is not known to be otherwise toxic.

Basic Info

Chemical Name	diphosphoric acid
Synonyms	Diphosphorsaeure; Pyrophosphoric Acid; phosphono dihydrogen phosphate; PPV; Pyrophosphorsaeure; acide diphosphorique; Diphosphoric acid; UNII-4E862E7GRQ; EINECS 219-574-0;
CAS No.	2466-09-3
Molecular Formula	H4O7P2
Molecular Weight	177.97500
PSA	143.91000
LogP	-0.81160

Properties

Appearance & Physical State	colorless needle crystal or yellow viscous Liquid
Density	2.43 g/cm3
Melting Point	61ºC
Storage Condition	Keep tightly closed. Store in a cool dry place.

Safety Info

RTECS	JL6672500
Hazard Class	8
Safety Statements	S26-S36/37/39-S45
HS Code	2809201900
WGK Germany	3
Packing Group	III
RIDADR	UN 3260
Risk Statements	R34
Hazard Codes	C
Hazard Declaration	H302; H314
Caution Statement	P280; P305 + P351 + P338; P310
Signal Word	Danger
Symbol	GHS05, GHS07