Basic information
- Name:
Boron nitride
- CAS No.:
10043-11-5
- Molecular Structure:
- Formula:
- BN
- Molecular Weight:
- 24.82
- Deleted CAS:
- 165390-92-1|54824-38-3|56939-87-8|58799-13-6|60569-72-4|69071-29-0|69495-08-5|78666-05-4
- Synonyms:
- Elbor;BN 40SHP;Borazon;Denka boron nitride GP;Denka GP;Elbor LO 10B1-100;Elbor RM;Geksanit R;
- EINECS:
- 233-136-6
- Density:
- 2.29 g/cm3
- Appearance:
- white powder
- Hazard Symbols:
Xi- Risk Codes:
- 36/37
- Safety Description:
- 26-36 Details
- Transport Information:
- UN 1950
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Specification
The Boron nitride with the cas number 10043-11-5, is also called azanylidyneborane named by IUPAC. It's system name is nitriloborane. It belongs to the following product categories: (1)Inorganics; (2)Ceramics; (3)Metal and Ceramic Science; (4)Nitrides. It's physical properties about Pregn-4-ene-3,20-dione,16,17-epoxy-11-hydroxy- are: (1)#H bond acceptors: 1 ; (2)#H bond donors: 0 ; (3)#Freely Rotating Bonds: 0 ; (4)Polar Surface Area: 23.79 Å2. It seems like white powder. It is stable but incompatible with oxidizing agents. When you are using this chemical, please be cautious about it as the following: boron nitride is quite irritating to eyes and respiratory system. Before you are using it , please wear suitable protective clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Uses of : Boron nitride ceramics are traditionally used as parts of high-temperature equipment because of excellent thermal and chemical stability. Boron nitride has a great potential in nanotechnology. Nanotubes of BN can be produced that have a structure similar to that of carbon nanotubes. However the properties are very different: carbon nanotubes can be metallic or semiconducting depending on the rolling direction and radius, whereas a BN nanotube is an electrical insulator with a wide bandgap of ~5.5 eV (same as in diamond), which is almost independent of tube chirality and morphology. Similar to other BN forms, BN nanotubes are more thermally and chemically stable than carbon nanotubes which favors them for some applications.
Prepration of : Boron nitride has not been found in nature and therefore is produced synthetically. The most common raw materials for BN synthesis, boric acid and boron trioxide are produced on industrial scales by treating minerals borax and colemanite with sulfuric acid or hydrochloric acid:
Na2B4O7·10H2O (borax) + H2SO4 → 4 H3BO3 (boric acid) + Na2SO4 + 5 H2O
Hexagonal boron nitride is obtained by the reacting boron trioxide (B2O3) or boric acid (B(OH)3) with ammonia (NH3) or urea (CO(NH2)2) in nitrogen atmosphere:
B2O3 + 2 NH3 → 2 BN + 3 H2O (T = 900 °C)
B(OH)3 + 3 NH3 → BN + 2 NH3 + 3 H2O (T = 900 °C)
B2O3 + CO(NH2)2 → 2 BN + CO2 + 2 H2O (T > 1000 °C)
B2O3 + 3 CaB6 + 10 N2 → 20 BN + 3 CaO (T > 1500 °C)
You can still convert the following datas into molecular structure :
(1).SMILES: B#N
(2).InChI:InChI=1/BN/c1-2
Toxic information of Boron nitride can be showed as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rabbit | LD | skin | > 20mL/kg (20mL/kg) | Union Carbide Data Sheet. Vol. 7/20/1965, | |
| rat | LD | oral | > 50gm/kg (50000mg/kg) | Union Carbide Data Sheet. Vol. 7/20/1965, |