BORON PHOSPHATE
- CAS NO.:13308-51-5
- Empirical Formula: BO4P
- Molecular Weight: 105.78
- MDL number: MFCD00011318
- EINECS: 236-337-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-17 18:18:11
What is BORON PHOSPHATE?
Chemical properties
white not hygroscopic crystal(s); prepared by reacting boric acid and phosphoric acid up to 1200°C: B(OH)3+H3PO4=BPO4+3H2O; used in special glasses [HAW93]
Physical properties
Physical Properties White infusible solid; density 1.873 g/mL; sublimates slowly above 1,450°C; soluble in water, decomposes to phosphoric acid and boric acid; pH of 1% solution is ~2.0.
The Uses of BORON PHOSPHATE
Boron phosphate is used as an acid catalyst for dehydration of alcohols to olefins; isomemization of olefins; nitration of aromatic hydrocarbons; polymerization of aldehydes and other synthetic reactions. It also is used as a flux in silica-based porcelain and ceramics; special glasses; and acid cleaners.
The Uses of BORON PHOSPHATE
Boron phosphate is used as a catalyst for dehydration as well as in other organic reactions. It is employed as a source of phosphates involved in the exchange reaction to prepare metal phosphates. It finds application in refractories, ceramics and flame-retardants.
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
Non flammable
Properties of BORON PHOSPHATE
Melting point: | 1400°C |
Density | 2.52 g/mL at 25 °C(lit.) |
form | Powder |
color | White |
Specific Gravity | 2.81 |
Water Solubility | Insoluble in water. |
CAS DataBase Reference | 13308-51-5(CAS DataBase Reference) |
EPA Substance Registry System | Boron phosphate (B(PO4)) (13308-51-5) |
Safety information for BORON PHOSPHATE
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
Computed Descriptors for BORON PHOSPHATE
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