88431
磷酸二氢铵
analytical standard, for nitrogen determination according to Kjeldahl method, ≥99.5%
别名:
prim -磷酸铵, 单 -磷酸铵, 磷酸二氢铵
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关于此项目
线性分子式:
NH4H2PO4
化学文摘社编号:
分子量:
115.03
NACRES:
NA.24
PubChem Substance ID:
UNSPSC Code:
85151701
EC Number:
231-764-5
MDL number:
grade
analytical standard
Quality Segment
description
traceable to NIST SRM 194
assay
≥99.5% (T), ≥99.5%
shelf life
limited shelf life, expiry date on the label
technique(s)
HPLC: suitable, gas chromatography (GC): suitable, titration: suitable
impurities
12.18%±0.10% total Kjeldahl nitrogen
loss
≤0.2% loss on drying
pH
3.8-4.4 (25 °C, 50 mg/mL in H2O)
mp
190 °C (dec.) (lit.)
solubility
H2O: soluble, clear, colorless
application(s)
food and beverages
format
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
General description
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。
Application
它是凯氏法测定氮的标准品。
Features and Benefits
- 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）
Disclaimer
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。
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存储类别
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)