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Analysis reagents

Analytical reagent is a class of chemical reagents for analytical testing with being able to provide molecules, ions or radicals in the qualitative or quantitative analysis, and the reaction product being precipitated or colored compound or fluorescent substance and so on. Indicator, titrant and Instrument Analytical Reagents also fall into this category. The most important feature of the analysis reagent is the sensitivity and selectivity, even if the number of the test substance is little or the ion concentration is also small, the reagent can also be used for identification or quantitative determination. E.g., when the magnesium ion concentration is 1.2mg / l, addition of disodium hydrogen phosphate and ammonium chloride can cause precipitation. In the analytical chemistry, people must use selective reagents and group reagent. Selective agent is reagents which only react with limited chemical substances. For example, the silver nitrate is the selective precipitation agent for chloride and bromide. Organic selective agent is able to form specific chelate with a metal ion. For example, chromium azure S, 1- (2- pyridine azo) -2-naphthol (PAN), 4- (2- PYRIDYLAZO) - Inter hydroquinone (PAR), under different conditions, can be used as the selective agent on different metal ions.

The group reagent is reagents which can simultaneously separate many ionic agents. Some agents, under certain conditions, no matter whether with or without the presence of other ions, can only have typical reaction with the test material or ions. These reagent reagents are called specific agents. The specificity of the product is determined by the product. The size, charge density and the electronic arrangement of the reagents and reaction ions must meet certain conditions, otherwise it does not react. Most kinds of inorganic analytical reagents have very excellent selectivity; most organic analytical reagents have very excellent special effects. There are many reagents for the analysis of organic functional groups, such as the Bromocresol Green for qualitative and quantitative determination of organic acids, aldehydes, ketones, etc., ninhydrin, phenylhydrazine, 2,4-dinitrophenylhydrazin and semicarbazide.

classification
(1) Reagents for chemical analysis: testing items for the chemical reaction analysis.
1) Baseline reagent: a pure compound for direct formulation of the standard solution and the standard solution in the volumetric calibration.
2) Indicator: reagent used to indicate the end of the titration reagent and can be classified into pH indicator, redox indicator, adsorption indicator, metal indicator and fluorescent indicator, and so on.

(2) Analysis reagent of Instrument: high-purity compounds dedicated to instrumental analysis.
1) Spectroscopically pure reagents: spectroscopically pure compound, often expressed in the SP; reagents for spectral analysis.
2) Chromatography pure reagents: reagents dedicated to analysis by gas chromatography and liquid chromatography analysis.
3) Deuterated reagents: reagents dedicated to the nuclear resonance instrument analysis.

Purification of organic analytical reagents
Organic reagents are widely used in analysis chemistry and are mainly used in solvents, precipitation agents, complexing agents, indicators, reagents and surface active agents, etc. In order to adapt to a variety of analytical demands, sometimes it is required to apply purification process to certain reagents with organic reagent liquid often being purified by distillation while solid matter can be purified through crystallization or sublimation method. Substance having a high vapor pressure, namely organic reagents with low purification boiling point and without decomposition at boiling temperature being commonly applied atmospheric distillation; for substance of less volatile and slightly-soluble in water, namely organic reagents that can be decomposed at high purification boiling point or higher boiling temperature, we can apply vacuum distillation or steam distillation.

Distillation method for purification of organic reagent is commonly purification process in laboratory. Conventional distillation apparatus generally comprises of three parts including a composition distiller, condenser and receiver as well as auxiliary section heater, a thermometer, a wetted tube, cork and so on.

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Structure Chemical Name CAS MF
AQUANAL(R)-PLUS CARBONATE HARDNESS CHECKING SOLUTION AQUANAL(R)-PLUS CARBONATE HARDNESS CHECKING SOLUTION
SILICA GEL 100 CN SILICA GEL 100 CN
AQUANAL-PLUS NITRITE AQUANAL-PLUS NITRITE
TLC  plate  rack TLC plate rack
Flow  adapter  for  Luer  lock  LC  columns Flow adapter for Luer lock LC columns
Heater  block Heater block
Copper(II)  electrolyte  buffer  pH  3.0  for  cation-HPCE Copper(II) electrolyte buffer pH 3.0 for cation-HPCE
EPA  TO-11A  Six  Component  Carbonyl-DNPH  Mix EPA TO-11A Six Component Carbonyl-DNPH Mix
TLC  plate  holder TLC plate holder
Calcium  ionophore  II  -  membrane  A Calcium ionophore II - membrane A
Electrode  Connecting  Wire  with  Lemo/BNC-Connector Electrode Connecting Wire with Lemo/BNC-Connector
Sulfachloropyridazine-phenyl-13C6 Sulfachloropyridazine-phenyl-13C6
Nitrate Ionophore VI
		
	Nitrate Ionophore VI 1196157-85-3 C28H60N4O4
Fluoxetine-d5 solution
		
	Fluoxetine-d5 solution 1173147-79-9 C17H17DF3NO
Erbium(III) Ionophore I
		
	Erbium(III) Ionophore I 104662-64-8 C21H18N2O2
Tin(II) ionophore III
		
	Tin(II) ionophore III 1173985-63-1 C48H48N4O3
MefenaMic acid-13C6 MefenaMic acid-13C6 1325559-19-0 C15H15NO2
SulfadiMethoxine-13C6 SulfadiMethoxine-13C6 1334378-48-1
Sulphated β-cyclodextrin, 100mg, neat
		
	Sulphated β-cyclodextrin, 100mg, neat
Spectroline light tube for CX UV-viewing cabinet
		
	Spectroline light tube for CX UV-viewing cabinet
AQUANAL-plus Oxygen titrimetric Refill pack
		
	AQUANAL-plus Oxygen titrimetric Refill pack
C18-reversed phase silica gel
		
	C18-reversed phase silica gel
AQUANAL Oekotest Phosphate
		
	AQUANAL Oekotest Phosphate
AQUANAL-professional DPD No 1 Buffer solution
		
	AQUANAL-professional DPD No 1 Buffer solution
Aluminum test kit Quantofix
		
	Aluminum test kit Quantofix
AQUANAL-professional Vario H Chlorine Free (DPD)
		
	AQUANAL-professional Vario H Chlorine Free (DPD)
Silylating mixture Fluka III
		
	Silylating mixture Fluka III
MIXED BED RESIN TMD-8 MIXED BED RESIN TMD-8 100915-97-7
AQUANAL(R)-PLUS AMMONIUM (NH4) CHECK SOLUTION AQUANAL(R)-PLUS AMMONIUM (NH4) CHECK SOLUTION
IODOPLATINATE REAGENT IODOPLATINATE REAGENT IPt-
SILOPRENE CROSSLINKING AGENT K-11 SILOPRENE CROSSLINKING AGENT K-11
CHROMOIONOPHORE IX CHROMOIONOPHORE IX 192190-91-3 C24H28F3NO
SILYLATING MIXTURE FLUKA I ACCORDING TO& SILYLATING MIXTURE FLUKA I ACCORDING TO& 318974-69-5 C14H33ClN2Si3
ALUMINIUM CHLORIDE SOLUTION ALUMINIUM CHLORIDE SOLUTION 7371-55-3 C4H10AlCl3O2
POTASSIUM TEST KIT QUANTOFIX POTASSIUM TEST KIT QUANTOFIX
ELECTRODE BODY ISE ELECTRODE BODY ISE
IONENSELEKTIVE OPTODENMEMBRANEN IONENSELEKTIVE OPTODENMEMBRANEN
COPPER TEST STICKS QUANTOFIX COPPER TEST STICKS QUANTOFIX
AQUANAL-PROFESSIONAL DPD NO.4 AQUANAL-PROFESSIONAL DPD NO.4
AQUANAL-PROFESSIONAL CHLORIDE AQUANAL-PROFESSIONAL CHLORIDE
AQUANAL-PROFESSIONAL PHENOLRED AQUANAL-PROFESSIONAL PHENOLRED
AQUANAL-PROFESSIONAL SULFIDE NO.2 AQUANAL-PROFESSIONAL SULFIDE NO.2
AQUANAL(R)-PLUS SILICON (SI) AQUANAL(R)-PLUS SILICON (SI)
AQUANAL(R)-PLUS COPPER (CU) AQUANAL(R)-PLUS COPPER (CU)
GLYCERYL CONTROLLED PORE GLASS GLYCERYL CONTROLLED PORE GLASS
sodium N-(6-chloropyrazinyl)sulphanilamidate sodium N-(6-chloropyrazinyl)sulphanilamidate 23307-72-4 C10H10ClN4NaO2S
potassium tetraiodobismuthate potassium tetraiodobismuthate 39775-75-2 BiH4I4K
1,3,5-Tris[(3-butyl-imidazolium)methyl]-2,4,6-trimethylbenzene trifluoride solution
		
	1,3,5-Tris[(3-butyl-imidazolium)methyl]-2,4,6-trimethylbenzene trifluoride solution 1245190-31-1 C33H51FN6+2
Trimethylammonium bicarbonate buffer
		
	Trimethylammonium bicarbonate buffer 34408-21-4 C4H11NO3
CONDUCT-C PLAST CONDUCT-C PLAST
Aldrich rectangular TLC developing tanks, complete
		
	Aldrich rectangular TLC developing tanks, complete
Analtech TLC Uniplates: C18-silica gel matrix
		
	Analtech TLC Uniplates: C18-silica gel matrix
Latch-lid TLC developing chambers
		
	Latch-lid TLC developing chambers
chromatography papers chromatography papers
Flow  adapter  for  jacketed  LC  columns Flow adapter for jacketed LC columns
Ph  Eur  5.0  Calibration  Mix  for  GC Ph Eur 5.0 Calibration Mix for GC
Dietary  Fiber,  Total,  Assay  Control  Kit Dietary Fiber, Total, Assay Control Kit
Ethylene  in  helium Ethylene in helium
Poly  TLC  Plates:  Cellulose  with  Fluorescence,  TLC-PET  foils  cellulose Poly TLC Plates: Cellulose with Fluorescence, TLC-PET foils cellulose
Aluminum  oxide  on  TLC-plates Aluminum oxide on TLC-plates Al2O3
Sodium  ionophore  I  -  membrane  A Sodium ionophore I - membrane A
Lab  Kit Lab Kit
Water  with  8%  formic  acid Water with 8% formic acid H2O
Adsorbent  scraper  blades Adsorbent scraper blades
pH  Indicator  sticks,  universal  pH  0-14 pH Indicator sticks, universal pH 0-14
AQUANAL-plus zinc (Zn) 0.02-0.2 mg/L
		
	AQUANAL-plus zinc (Zn) 0.02-0.2 mg/L
AQUANAL(R)-PLUS CYANIDE (CN) AQUANAL(R)-PLUS CYANIDE (CN)
Starch (HK) Assay Kit
		
	Starch (HK) Assay Kit
AQUANAL-Oekotest water laboratory pH-value reagent
		
	AQUANAL-Oekotest water laboratory pH-value reagent
AQUANAL-Oekotest total hardness
		
	AQUANAL-Oekotest total hardness
AQUANAL-professional DPD No 3 solution
		
	AQUANAL-professional DPD No 3 solution
AQUANAL -professional Hydrazine Powder
		
	AQUANAL -professional Hydrazine Powder
AQUANAL-professional ortho-Phosphate tube test
		
	AQUANAL-professional ortho-Phosphate tube test
Block heater (without block), 220V
		
	Block heater (without block), 220V
AQUANAL-professional Vario H Phosphate hydr.
		
	AQUANAL-professional Vario H Phosphate hydr.
1,5-Pentanediyl-bis(3-benzylimidazolium) difluoride solution
		
	1,5-Pentanediyl-bis(3-benzylimidazolium) difluoride solution C25H30F2N4
1,3,5-Tris[(tripropylphosphonium)methyl]benzene trifluoride solution
		
	1,3,5-Tris[(tripropylphosphonium)methyl]benzene trifluoride solution
TETRAHEXYLAMMONIUM DIHYDROGEN PHOSPHATE TETRAHEXYLAMMONIUM DIHYDROGEN PHOSPHATE 87700-05-8 C24H54NO4P
HYDROGEN IONOPHORE II - COCKTAIL A HYDROGEN IONOPHORE II - COCKTAIL A
MAGNESIUM IONOPHORE VII MAGNESIUM IONOPHORE VII 156210-12-7 C38H60N4O8
SIGMA TLC SPRAY BOX SIGMA TLC SPRAY BOX
TOOL FOR ION-SELECTIVE ELECTRODES TOOL FOR ION-SELECTIVE ELECTRODES
PUNCH FOR ION-SELECTIVE MEMBRANES PUNCH FOR ION-SELECTIVE MEMBRANES
SILICA GEL ON TLC-PET FOILS SILICA GEL ON TLC-PET FOILS
4-AMINOPHENYL-BETA-D-THIOGALACTOPYRANOSIDE-AGAROSE 4B 4-AMINOPHENYL-BETA-D-THIOGALACTOPYRANOSIDE-AGAROSE 4B
CYANOAQUA-COBYRINIC ACID HEPTAKIS(2-PHENYLETHYL ESTER) CYANOAQUA-COBYRINIC ACID HEPTAKIS(2-PHENYLETHYL ESTER) 130549-56-3 C102H117ClCoN5O19
POTASSIUM IONOPHORE I - COCKTAIL A POTASSIUM IONOPHORE I - COCKTAIL A
3-[bis(2-ethylhexyl)phosphorylmethyl]heptane 3-[bis(2-ethylhexyl)phosphorylmethyl]heptane 2785-32-2 C24H51OP
BARIUM IONOPHORE I BARIUM IONOPHORE I 96476-01-6 C40H56N2O5
SGE  Plunger-Protected  Syringe,  Fixed  Needle SGE Plunger-Protected Syringe, Fixed Needle
Glass  Ring Glass Ring
Spotting  guide  and  Rf  reader Spotting guide and Rf reader
Cellulose  on  TLC  Alu  foils Cellulose on TLC Alu foils
Phenol  index  buffer  solution Phenol index buffer solution
C8 SILICA GEL C8 SILICA GEL
POLYETHYLENIMINE ON SILICA GEL POLYETHYLENIMINE ON SILICA GEL
Phospray
		
	Phospray
Sulfanitran-13C6 Sulfanitran-13C6 1353867-79-4
Salicylate ionophore II
		
	Salicylate ionophore II 1005344-82-0 C33H69N7S3
Tin(II) ionophore II
		
	Tin(II) ionophore II 13591-58-7 C22H17N3O2
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