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:
产品名称
磷酸二氢铵, analytical standard, for nitrogen determination according to Kjeldahl method, ≥99.5%
InChI
1S/H3N.H3O4P/c;1-5(2,3)4/h1H3;(H3,1,2,3,4)
InChI key
LFVGISIMTYGQHF-UHFFFAOYSA-N
SMILES string
N.OP(O)(O)=O
grade
analytical standard
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
Quality Level
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Application
它是凯氏法测定氮的标准品。
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。
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）
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。
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)
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Although the identification of degradation products of cefpirome sulfate has been reported, there has been no report concerning the impurities in bulk samples of this compound. To meet the requirements of the International Council for Harmonization of Technical Requirements for
Zhongyuan Zhao et al.
Polymers, 11(12) (2019-11-24)
The development of eco-friendly adhesives for wood composite products has been a major topic in the field of wood science and product engineering. Although the research on tannin-based and soybean protein-based adhesives has already reached, or at least nears, industrial
Zhongyuan Zhao et al.
Polymers, 12(1) (2020-01-19)
In this study, a further investigation was carried out on the synthesis mechanism, optimal manufacturing conditions, and curing behavior of a sucrose-ammonium dihydrogen phosphate (SADP) adhesive. The results of 13C nuclear magnetic resonance (NMR) spectroscopy confirmed that SADP was composed
Chao Liang et al.
Journal of chromatography. A, 1528, 25-34 (2017-11-07)
Reversed-phase liquid chromatography (RPLC) based octanol-water partition coefficient (logP) or distribution coefficient (logD) determination methods were revisited and assessed comprehensively. Classic isocratic and some gradient RPLC methods were conducted and evaluated for neutral, weak acid and basic compounds. Different lipophilicity
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