Name | Boron phosphate |
Synonyms | Boron phosphate BORON PHOSPHATE BOROPHOSPHORIC ACID Boron orthophosphate boron orthophosphate BORON (III) PHOSPHATE boronphosphate(b(po4)) Boron phosphate hydrate boron phosphate hydrate Boron phosphate (B(PO4)) 2,4,5-trioxa-1-phospha-3-borabicyclo[1.1.1]pentane 1-oxide |
CAS | 13308-51-5 |
EINECS | 236-337-7 |
InChI | InChI=1/B.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+3;;/p-3 |
Molecular Formula | BO4P |
Molar Mass | 105.78 |
Density | 2.52 g/mL at 25 °C(lit.) |
Melting Point | 1400°C |
Water Solubility | Insoluble in water. |
Appearance | White powder or block |
Specific Gravity | 2.81 |
Color | White |
Storage Condition | Room Temprature |
MDL | MFCD00011318 |
Physical and Chemical Properties | White tetragonal crystal or fine powder. |
Use | Used as plastic flame retardant, ceramic additives (microcrystalline material) |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
TSCA | Yes |
white tetragonal crystal or fine powder. Melting point> 1200 °c. Density 2.802g/cm3. Soluble in caustic metal solution, insoluble in water, ethanol, benzene, acetone, dilute acid. Anhydrous boron phosphate is a stable substance, non-hygroscopic. There are 1, 3, 4, 5, 6 Kinds of hydrate. Boron phosphate containing 1 molecule of crystal water is a white crystal, which is not deliquescent and soluble in water, and is dehydrated to BP04 by heating to above 400 ℃, and is converted into quartz-type boron phosphate at 32 ℃ and under high pressure. Boron phosphate and ammonia is not easy to form adduct, and six water soluble in liquid ammonia will form BP04-3H20.
phosphoric acid boric acid method is a more common production method. Phosphoric acid boric acid method can be divided into the following two processes.
catalysts for organic synthesis. Used as thermally stable pigments, ceramic materials, coatings, petroleum additives, preservatives and acid cleaning agents, decoagulating electrolytes for fuel cells. It is a raw material for the manufacture of sodium borohydride. The hydrate may be used as a fertilizer.
packed in a plastic woven bag lined with a plastic film bag. 25kg net weight per bag. Should be stored in a cool, ventilated, dry warehouse. Packaging should be sealed and moisture-proof. Transport should be protected from rain and sun exposure. When loading and unloading should be light to prevent packaging rupture. Fire, water, sand, carbon dioxide fire extinguishing.
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Use | Used as organic synthesis catalyst, thermally stable pigment, petroleum additive, preservative, acidic purifier and raw material for producing ceramics and sodium borohydride Catalyst for organic synthesis. Used as thermal stability pigments, ceramic materials, coatings, petroleum additives, preservatives and acid purifiers, decondensing electrolytes for fuel cells. It is the raw material for making sodium borohydride. Hydrate can be used as fertilizer. Used as plastic flame retardant, ceramic additive (microcrystalline material) |
production method | phosphoric acid-boric acid method is a more common production method. The phosphoric acid-boric acid method can be divided into the following two processes. Phosphoric acid and boric acid are mixed, heated at 80~100 ℃ for reaction, or phosphoric acid solution and boric acid solution are mixed and evaporated to dryness in a water bath. If the amorphous substance obtained in this way is burned at 1000 ℃ for 2 hours, it will be converted into crystalline boron phosphate. Boron phosphate prepared by the above 80~100 ℃ reaction is easily soluble in water; However, after strong heat (about 1000 ℃), it becomes a finished boron phosphate insoluble in water. Its H3BO3 + H3P04 → BPO4 + 3H2O mixes 3.44g of crystalline boric acid and 6.44 mol 85% phosphoric acid with a molar ratio of P2O5:B2O3 = 0.85:1, and 3.65g of ammonium phosphate is added with a ratio of (NH4)2HPO4:B2O3 = 0.5:l. in the obtained mixture, the content is generally about P2O5:B203 = 1.1:1, and 5g of formaldehyde solution is added at the same time, the corresponding molar ratio is CH2O:B2O3 = 1.2:1. Then, the above mixture is added into a small thin neck container made of polytetrafluoroethylene, stirred evenly, reacted at 150 ℃ for 24 hours, filtered, washed with distilled water, calcined at 110 ℃ and then calcined at 300 ℃ to obtain crystalline boron phosphate finished product. Its H3PO4 + H3B03 → BPO4 + 3H2O |