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Merck
CN

72190

Nessler 试剂

for qualitative det. of ammonia and ammonium compounds

别名:

四碘合汞酸钾 - 氢氧化钾 溶液

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关于此项目

化学文摘社编号:
7783-33-7
NACRES:
NA.21
PubChem Substance ID:
329763879
UNSPSC Code:
41113319
MDL number:
MFCD00049656
Form:
liquid

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InChI key

OPCMAZHMYZRPID-UHFFFAOYSA-J

SMILES string

[K+].[K+].I[Hg--](I)(I)I

InChI

1S/Hg.4HI.2K/h;4*1H;;/q+2;;;;;2*+1/p-4

form

liquid

quality

for qualitative det. of ammonia and ammonium compounds

specific analyte(s)

ammonium

technique(s)

photometry: suitable

impurities

potassium hydroxide, potassium tetraiodomercurate

density

1.16 g/mL at 20 °C

application(s)

environmental
food and beverages
general analytical

Quality Level

100

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General description

奈斯勒试剂广泛用于测定铵化合物。可以使用无水碘化汞和无水碘化钾制备。可以由溶解在氢氧化钾中的四碘酸钾制备。

Application

奈斯勒试剂已用于流动分析方案中分析光谱法测氨。

Other Notes

方法检出限为0.1 mg/L。
参考文献: APHA 1975。
用于氨测定的试剂

Disclaimer

存放时可能形成少量沉淀
对于美国客户：本品含汞。废弃后切勿放入垃圾桶，须按照地方、州或联邦法律处置。

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A - STOT RE 2

target_organs

Kidney,Central nervous system

存储类别

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCD2740
BCCC3064
BCCC2297
BCCB5542
BCBZ6872

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A novel optoelectronic detector and improved flow analysis procedure for ammonia determination with Nessler?s reagent.
Kolacinska, Kamila, and Robert Koncki.
Analytical Sciences, 30.10, 1019-1022 (2014)
E.A. Burns et al.
The Analytical Chemistry of Nitrogen and its compounds, 51-51 (1970)
Santosh Kumar Verma et al.
Journal of AOAC International, 90(4), 1180-1190 (2007-09-01)
This paper presents development of a simple, rapid, and precise analytical method for determination of sulfur dioxide in ambient air by a gas to solid-phase conversion method. Sulfur dioxide is determined in the form of sulfite (SO3(2-)) because the absorbing
S J Lambert et al.
Acta crystallographica. Section D, Biological crystallography, 55(Pt 5), 1048-1051 (1999-04-27)
Intact histone octamers, produced by a new method quickly and in bulk, were crystallized in KCl/phosphate, and the X-ray data were analysed to 2.15 A, confirming a P65 space group. This environment preserves the high-resolution structure of the octamers and
Justyna Bzura et al.
Enzyme and microbial technology, 123, 1-7 (2019-01-29)
Two fully mechanized flow analysis systems for urease activity assays have been developed, characterized and compared. Both of them are based on almost the same compact system of solenoid micropumps and microvalves controlled and actuated by highly effective, low-power and
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