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硼酸,Boric acid;puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%

线性分子式: H3BO3 CAS号: 10043-35-3 分子量: 61.83 EC 号: 233-139-2 MDL编号: MFCD00011337 eCl@ss: 38120104 PubChem化学物质编号: 329753669 NACRES: NA.21
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 31146
CAS号: 10043-35-3
MDL号: MFCD00011337
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说明

一般描述

硼酸是一种非常弱的酸,pH 值在 3.6-4.0 范围内。报道了用库仑法测定硼酸含量的方法。[1]
Boric acid can be used as a Lewis acid catalyst in organic synthesis to facilitate various organic reactions, including dehydration, hydrolysis, decarboxylation, and condensation reactions. It produces different borate anions and salts and can react with alcohols to produce borate esters. It is also used as a buffering agent and pH adjuster.
 

应用

Boric acid can be used as a precursor to synthesize boron carbon oxynitride thin films by the atmospheric pressure chemical vapor deposition (APCVD) method using carbon-rich methane and nitrogen-rich ammonia.
 
 

属性

等级

ACS reagent
puriss. p.a.

质量水平

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

蒸汽压

2.6 mmHg ( 20 °C)

测定

≥99.8%

形式

powder or crystals

杂质

≤0.005% insoluble in methanol
≤0.05% with methanol-HCl non-volat. matter

pH值(酸碱度)

3.6-4.0 (20 °C, 4%)

mp

160 °C (dec.) (lit.)

溶解性

water: soluble

密度

1.440 g/cm3

痕量阴离子

chloride (Cl-): ≤3 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤5 mg/kg

痕量阳离子

As: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤1 mg/kg
Mg: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

OB(O)O

InChI

1S/BH3O3/c2-1(3)4/h2-4H

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

 

安全信息

象形图

Health hazard

警示用语:

Danger

危险声明

危险分类

Repr. 1B

储存分类代码

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 33 | 欧洲Eur. ≥ 27 | 東京Tokyo ≥ 9 | 香港与北京 ≥ 16
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