13308-51-5 Usage
Description
Boron phosphate, also known as phosphoric acid borate, is an inorganic compound with the chemical formula BPO4. It is a white, infusible solid that is soluble in water and decomposes to phosphoric acid and boric acid. Boron phosphate is prepared by reacting boric acid and phosphoric acid at high temperatures up to 1200°C.
Uses
Used in Chemical Industry:
Boron phosphate is used as an acid catalyst for various organic reactions, including dehydration of alcohols to olefins, isomerization of olefins, nitration of aromatic hydrocarbons, and polymerization of aldehydes.
Used in Ceramics and Refractory Industry:
Boron phosphate is used as a flux in silica-based porcelain and ceramics, as well as in the production of special glasses.
Used in Flame-Retardant Industry:
Boron phosphate is used as a source of phosphates involved in the exchange reaction to prepare metal phosphates, which are used as flame-retardants.
Physical Properties:
Boron phosphate is a white, not hygroscopic crystal with a density of 1.873 g/mL. It sublimates slowly above 1,450°C and has a pH of approximately 2.0 in a 1% solution.
Preparation
Boron phosphate is prepared by heating an equimolar mixture of boric acid and phosphoric acid at 1,000 to 1,200°C:
H3BO3 + H3PO4 → BPO4 + 3H2O
Various preparative methods are adopted at nonstoichiometric formulations, incomplete dehydration or using oxide additives to obtain boron phosphate of varying purity for its catalytic applications. The compound also forms hydrates (tri- tetra-, penta-, and hexahydrates) which readily decompose in water to phosphoric acid and boric acid.
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 13308-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,3,0 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13308-51:
(7*1)+(6*3)+(5*3)+(4*0)+(3*8)+(2*5)+(1*1)=75
75 % 10 = 5
So 13308-51-5 is a valid CAS Registry Number.
InChI:InChI=1/B.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+3;;/p-3
