질화붕소
보라존PYROLYTICBORONNITRIDE · 붕소모노질화합물 · 붕소질화합물 · 질화붕소 · 질화브론 · 질화붕소(BORONNITRIDE) · 보론나이트라이드 · 아잔일리다인보레인
식별자 및 물리적 특성
| CAS No. | 10043-11-5 |
|---|---|
| 분자식 | BN |
| 평균 분자량 | 24.82 g/mol |
| 단동위원소 질량 | 25.0123794 g/mol |
| SMILES | B#N |
| InChIKey | PZNSFCLAULLKQX-UHFFFAOYSA-N |
| PubChem CID | 66227 |
| ChEBI | CHEBI:50883 |
| EC No. | 233-136-6 |
| DTXSID | DTXSID5051498 |
| 현지명 | 질화붕소 |
화학 및 물리적 성질
| 극성 표면적 | 23.8 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 1 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 2 |
| 형식 전하 | 0 |
| 복잡도 | 10 |
| 물질 분류 | Metals -> Metalloid Compounds (Boron) |
| 화장품 | Cosmetic ingredients (Boron Nitride) -> CIR (Cosmetic Ingredient Review)OpacifyingAbsorbentSkin conditioning |
| SpringerMaterials Properties | thermal expansion coefficient |
| Food Contact Substances | FCS -> FDA Cumulative Estimated Daily Intake (CEDI)FCS -> FDA Inventory of Effective Food Contact Substance (FCS) Notifications |
| Physical Description | Dry PowderLiquidOther Solid[Merck Index] Insoluble[MSDSonline] Crystallizes into 3 forms: alpha (white and hexagonal), beta (high-pressure cubic), and gamma (high-pressure wurtzite structure)[Ullmann] |
| 녹는점 | 2700℃ |
| 끓는 점 | sublimes sl below 3000℃ [MER06] |
| 밀도 | 0.9-1.1 g/mL at 25 °C |
| 저장 조건 | no restrictions. |
| 용해도 | insoluble in H2O, acid solutions |
| 물리적 상태 | 가루 |
| 비중 | 3.48 |
| 색상 | 하얀색 |
| pH | 5-8 (100g/l, H2O, 20℃)(slurry) |
| 용해도 | 20°C에서 물에 용해되고(약간 용해됨), 95°C에서 물에 용해됩니다. |
| 비열 | Cp(crystal): 0.79 J/(g·K)Cp(gas): 1.19 J/(g·K), at 25℃ |
| Merck | 14,1346 |
| 안정성 | 안정적인. 산화제, 물과 호환되지 않습니다. |
| 화장품 원료 기능 | 부드럽고 매끄러운 개질제필러 |
| InChI | 1S/BN/c1-2 |
| InChIKey | PZNSFCLAULLKQX-UHFFFAOYSA-N |
| SMILES | B#N |
| NIST | Boron nitride(10043-11-5) |
| EPA | Boron nitride (BN) (10043-11-5) |
화학적 성질
white powder(s), 1μm or less 99.5% pure; hexagonal, most common form: a=0.2504 nm, c=0.6661nm; fcc: a=0.3615nm; hardness: hexagonal like graphite,cub approaches that of diamond; band gap ~7.5 eV at 300K; dielectric 7.1; used in furnace insulation and in crucibles for melting aluminum, boron, iron, and silicon, also as sputtering target for dielectrics, diffusion masks, passivation layers [KIR81] [HAW93] [MER06] [CER91]
안전 및 규제
| GHS 분류 | This chemical does not meet GHS hazard criteria for 87.9% (422 of 480) of all reports.WarningH319 (11.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P319, P337+P317, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 480 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| 규제 정보 | Chemical: Boron nitride (BN)Boron nitride (BN) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Boron nitride (BN) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 29-05-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/13555Boron nitride (BN): Does not have an individual approval but may be used under an appropriate group standard |
| 기타 안전 정보 | IMAP assessments - Boron nitride (BN): Environment tier I assessment |
| 유해성 요약 | See NITRIDES. |
| Hazard Classes and Categories | Eye Irrit. 2 (11.7%) |
| 독성 요약 | Safe in the present practices of use and concentration. Ingredient, concentration, and use information are available in documents discoverable at https://cir-reports.cir-safety.org |
| 수질 위해 등급(WGK) | 3 |
| TSCA 등재 상태 | TSCA listed |
| RTECS 번호 | ED7800000 |
| 운송 번호(UN) | UN1950 |
| 독성 | LD50 orally in Rabbit: > 2000 mg/kg LD50 dermal Rat > 2000 mg/kg |
| 관세 코드 | 2850 00 20 |
| 위험 문구(R) | 36/37 |
| 위험 표시 | Xi |
| 안전 문구(S) | 26-36 |
| 위험 등급 | 2.1 |
| 기존화학 물질 | KE-03535 |
| 저장 분류 | 13 - Non Combustible Solids |
용도
개요
Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes.Boron nitride is an inorganic compound with a flat, hexagonal crystal similar to graphite, but with the carbon atoms replaced by boron and nitrogen atoms. The alternate boron and nitrogen atoms are linked to form interlocking hexagonal rings with three boron atoms and three nitrogen atoms, and the layers are held together by van der Waals forces. There is no boron-nitrogen bonding between the layers.The bond length is 1.466Å and the interlayer spacing is 3.331 Å. A spherical form (with a hexagonal crystal structure) is also available.Boron nitride can also be in cubic form in which alternately linked boron and nitrogen atoms form a tetrahedral bond network, similar to carbon atoms in diamond.
용도
Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes. Also used in manufacture of alloys; in semiconductors, nuclear reactors, lubricants.Hexagonal boron nitride can be used as an electrical insulator; as thermocouple protection sheaths, crucibles and linings for reaction vessels; and as a coating for refractory molds used in glass forming and in superplastic forming of titanium. It can also be incorporated in ceramics, alloys, resins, plastics, and rubber to give them self-lubricating properties. Hexagonal boron nitride is used the formulation of coatings and paints for high temperature applications. It is also used as a substrate for semi-conductors, lens coatings, and transparent windows. https://www.cir-safety.org
일반 설명
Boron nitride in cubic form, known as Borazon, is a manufactured abrasive that was discovered by General Electric Co. Laboratories in 1957. Unlike manufactured diamond, Borazon does not have a natural counterpart. It is produced under temperatures and pressures similar to those required for diamond manufacture. Additionally, cubic boron nitride exhibits greater thermal stability compared to diamond. It remains stable at temperatures exceeding 1,371°C, while diamond reverts to graphite at temperatures above 816°C. Borazon has a Knoop hardness (K100) of 7800, which is higher than ordinary abrasives but lower than diamond.
제조 및 합성 방법
제조 방법
Boron nitride is prepared by heating boric oxide with ammonia: B2O3 + 2NH3 → 2BN + 3H2O Alternatively, the compound can be prepared by heating boric oxide or boric acid with ammonium chloride or an alkali metal cyanide. Purified product can be obtained by high temperature reaction of boron halide with ammonia: BCl3 + NH3 → BN + 3HCl Boron nitride can also be made from the elements by heating boron and nitrogen at red heat.
생산 방법
In tonnage production, acetaldehyde may be manufactured by: 1. The direct oxidation of ethylene, requiring a catalytic solution of copper chloride plus small quantities of palladium chloride Cl2Pd. 2. The oxidation of ethyl alcohol C2H6O with sodium dichromate Cr2Na2O7, and 3. The dry distillation of calcium acetate C4H6CaO4 with calcium formate C2H2CaO4.