Merck
CN
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文件

88431

Supelco

磷酸二氢铵

analytical standard, for nitrogen determination according to Kjeldahl method, ≥99.5%

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别名:
prim -磷酸铵, 单 -磷酸铵, 磷酸二氢铵
线性分子式:
NH4H2PO4
CAS号:
7722-76-1
分子量:
115.03
EC 号:
231-764-5
MDL编号:
MFCD00003396
PubChem化学物质编号:
329769652
NACRES:
NA.24

等级

analytical standard

质量水平

100

描述

traceable to NIST SRM 194

检测方案

≥99.5% (T)
≥99.5%

保质期

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable
titration: suitable

杂质

12.18%±0.10% total Kjeldahl nitrogen

缺失

≤0.2% loss on drying

pH值（酸碱度）

3.8-4.4 (25 °C, 50 mg/mL in H2O)

mp

190 °C (dec.) (lit.)

溶解性

H2O: soluble, clear, colorless

application(s)

food and beverages

格式

neat

SMILES string

N.OP(O)(O)=O

InChI

1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4)

InChI key

LFVGISIMTYGQHF-UHFFFAOYSA-N

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相关类别

一般描述

磷酸二氢铵是在严格的条件下产生的分析标准，并以尽可能高的精度测量。

应用

它是凯氏法测定氮的标准品。

特点和优势

  • 可整洁存储于安全玻璃瓶内，打开前确保整个保质期的稳定性。
  • 提供准确的滴度测定
  • 随附分析证书（CoA）

注意

室温储存。我们建议首次使用后用干燥的氩气或氮气吹扫，进行除湿。

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

分析证书(COA)

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