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.
Click on the specific product, view the latest prices of the products, information, serving information
- Structure:
- Chemical Name:
- 3,6-DIDODECYLOXY-4,5-DIMETHYL-1,2-PHENYLENE-BIS(MERCURY CHLORIDE)
- CAS:
- 178959-28-9
- MF:
- C32H56Cl2Hg2O2
- Chemical Name:
- PORAPAK(R) Q
- CAS:
- 9043-77-0
- MF:
- (C10H12.C10H10)x
- Structure:
- Chemical Name:
- AQUO-CYANO-COBINAMIDE
- CAS:
- 13963-62-7
- MF:
- C49H74CoN12O10
- Structure:
- Chemical Name:
- SulfaMethoxazole-13C6
- CAS:
- 1196157-90-0
- MF:
- C10H11N3O3S
- Structure:
- Chemical Name:
- LEAD IONOPHORE IV
- CAS:
- 145237-46-3
- MF:
- C60H84N4O4S4
- Structure:
- Chemical Name:
- 2-AMINOFLUBENDAZOLE
- CAS:
- 82050-13-3
- MF:
- C14H10FN3O
- Structure:
- Chemical Name:
- 5-Hydroxy-2-[[2-methyl-3-(trifluoromethyl)phenyl]amino]-3-pyridinecarboxylic Acid
- CAS:
- 75369-61-8
- MF:
- C14H11F3N2O3
- Structure:
- Chemical Name:
- 2,3,6-TRI-O-OCTYL-ALPHA-CYCLODEXTRIN
- CAS:
- 140395-31-9
- MF:
- C180H348O30
- Structure:
- Chemical Name:
- (11β)-21-Chloro-9-fluoro-11-hydroxy-16-Methylpregna-1,4,16-triene-3,20-dione
- CAS:
- 1356190-17-4
- MF:
- C22H26ClFO3
- Structure:
- Chemical Name:
- retronecine
- CAS:
- 480-85-3
- MF:
- C8H13NO2
- Structure:
- Chemical Name:
- CHLORIDE IONOPHORE IV
- CAS:
- 187404-67-7
- MF:
- C33H50N4OS2
- Structure:
- Chemical Name:
- WITHANOLIDE B(P)(NEW)
- CAS:
- 56973-41-2
- MF:
- C28H38O5
- Structure:
- Chemical Name:
- TUNGSTO-PHOSPHORIC ACID SODIUM SALT EXT&
- CAS:
- 12026-98-1
- MF:
- NaO40PW12(-2)
- Structure:
- Chemical Name:
- 4',5'-DIBROMOFLUORESCEIN OCTADECYL ESTER
- CAS:
- 138833-47-3
- MF:
- C38H46Br2O5
- Structure:
- Chemical Name:
- FLUORESCEIN MERCURICACETATE FOR THE
- CAS:
- 32382-27-7
- MF:
- C24H16Hg2O9
- Structure:
- Chemical Name:
- 5-OCTADECANOYLOXY-2-(4-NITROPHENYLAZO)PHENOL
- CAS:
- 124522-01-6
- MF:
- C30H43N3O5
- Structure:
- Chemical Name:
- D-ALPHA-TOCOTRIENOL
- CAS:
- 58864-81-6
- MF:
- C29H44O2
- Chemical Name:
- Buffer solution for optode membranes pH 7.6
- Structure:
- Chemical Name:
- DIETHYLAMINOMETHYL POLYSTYRENE
- MF:
- C39H57N3X2
- Chemical Name:
- LITMUSPAPER,RED,REAGENT,ACS
- Structure:
- Chemical Name:
- IMPAQ RG1080 C18
- CAS:
- 72245-35-3
- MF:
- C20H43ClO2Si2
- Structure:
- Chemical Name:
- Sulfadoxine-d3
- CAS:
- 1262770-70-6
- MF:
- C12H11D3N4O4S
- Structure:
- Chemical Name:
- TETRAETHYLAMMONIUM BENZOATE
- CAS:
- 16909-22-1
- MF:
- C15H25NO2
- Structure:
- Chemical Name:
- Silybin
- CAS:
- 802918-57-6
- MF:
- C25H22O10
- Structure:
- Chemical Name:
- CALCIUM IONOPHORE II
- CAS:
- 74267-27-9
- MF:
- C28H48N2O3
- Structure:
- Chemical Name:
- Sulfathiazole-13C6
- CAS:
- 1196157-72-8
- MF:
- C9H9N3O2S2
- Structure:
- Chemical Name:
- 2,3,4-TRI-O-ACETYL-ALPHA-D-ARABINOPYRANOSYL ISOTHIOCYANATE
- CAS:
- 62414-75-9
- MF:
- C12H15NO7S
- Structure:
- Chemical Name:
- FENTANYL-D5
- CAS:
- 118357-29-2
- MF:
- C22H23D5N2O
- Structure:
- Chemical Name:
- CALCIUM IONOPHORE IV
- CAS:
- 126572-74-5
- MF:
- C52H100N2O3
- Chemical Name:
- COPOLYMER F. 80% V-CL 5% V-AC U. 15% HY
- CAS:
- 39317-41-4
- MF:
- (C6H10O3.C4H6O2.C2H3Cl)x
- Structure:
- Chemical Name:
- <GAMMA>-CYCLODEXTRIN PHOSPHATE SODIUM S&
- CAS:
- 199684-62-3
- MF:
- C48H80O64P8.8Na
- Structure:
- Chemical Name:
- S,S'-METHYLENEBIS(N,N-DIISOBUTYLDITHIOCARBAMATE)
- CAS:
- 90276-58-7
- MF:
- C19H38N2S4
- Structure:
- Chemical Name:
- CADMIUM IONOPHORE I
- CAS:
- 73487-00-0
- MF:
- C22H44N2O2S2
- Structure:
- Chemical Name:
- DIAZEM PEPTICA C18-A
- MF:
- C18H38O3Si
- Structure:
- Chemical Name:
- METHYLTRIDODECYLAMMONIUM NITRATE
- CAS:
- 13533-59-0
- MF:
- C37H78N2O3
- Structure:
- Chemical Name:
- ETH 157
- CAS:
- 61595-77-5
- MF:
- C36H32N2O4
- Structure:
- Chemical Name:
- ZORBAX LP 100/40 C4
- CAS:
- 68584-38-3
- MF:
- C6H12ClNO2Si2
- Structure:
- Chemical Name:
- ERYTHROMYCIN A DIHYDRATE
- CAS:
- 59319-72-1
- MF:
- C37H67NO13.H2O
- Structure:
- Chemical Name:
- IODIDE IONOPHORE I
- CAS:
- 14039-00-0
- MF:
- C25H22NS.ClO4
- Structure:
- Chemical Name:
- 2-methyl-5-nitroimidazol-1-ylacetic acid
- CAS:
- 1010-93-1
- MF:
- C6H7N3O4
- Chemical Name:
- AMBERLITE IRA-96
- CAS:
- 39409-19-3
- Structure:
- Chemical Name:
- MAGNESIUM IONOPHORE VI
- CAS:
- 151058-38-7
- MF:
- C63H96N6O6
- Structure:
- Chemical Name:
- (R)-6-METHOXY-2,5,7,8-TETRAMETHYLCHROMANE-2-CARBOXYLIC ACID
- CAS:
- 139658-04-1
- MF:
- C15H20O4
- Structure:
- Chemical Name:
- PYRIDINIUM FORMATE
- CAS:
- 15066-28-1
- MF:
- C6H7NO2
- Structure:
- Chemical Name:
- ETH 295
- CAS:
- 69844-41-3
- MF:
- C27H54N2O4
- Chemical Name:
- AMBERLITE IRA-910
- CAS:
- 37264-66-7
- Structure:
- Chemical Name:
- POTASSIUM TETRAKIS(4-BIPHENYLYL)BORATE
- CAS:
- 400762-49-4
- MF:
- B1C48H36K1
- Structure:
- Chemical Name:
- HYDROGEN IONOPHORE IV
- CAS:
- 103225-02-1
- MF:
- C24H41NO2
- Structure:
- Chemical Name:
- 2 2-DIHYDROXY-5-METHOXY-1 3-INDANDIONE
- CAS:
- 304671-58-7
- MF:
- C10H8O5
- Structure:
- Chemical Name:
- Diisooctylthiophosphinic acid
- CAS:
- 132767-86-3
- MF:
- C16H35OPS
- Structure:
- Chemical Name:
- 2,3:11,12-DIDECALINO-16-CROWN-5
- CAS:
- 172883-29-3
- MF:
- C27H46O5
- Structure:
- Chemical Name:
- 3,5-dihydroxy-3-methyl-Pentanoic acid
- CAS:
- 150-97-0
- MF:
- C6H12O4
- Structure:
- Chemical Name:
- acetaminophen glucuronide
- CAS:
- 16110-10-4
- MF:
- C14H17NO8
- Structure:
- Chemical Name:
- (22R)-5α,17α-Dihydroxy-6α,7α:22,26-diepoxyergosta-2,24-diene-1,26-dione
- CAS:
- 27570-38-3
- MF:
- C28H38O6
- Structure:
- Chemical Name:
- ETH 1644
- CAS:
- 80547-18-8
- MF:
- C24H46N2O2
- Chemical Name:
- DOWEX 2X8-100 ION-EXCHANGE RESIN
- CAS:
- 9049-11-0
- Structure:
- Chemical Name:
- TETRAHEPTYLAMMONIUM TETRAPHENYLBORATE
- CAS:
- 22560-28-7
- MF:
- C52H80BN
- Chemical Name:
- EDT-20
- CAS:
- 61790-85-0
- Structure:
- Chemical Name:
- 4-(6-METHYL-2-BENZOTHIAZOLYL)PHENYL ISOCYANATE
- CAS:
- 67229-93-0
- MF:
- C15H10N2OS
- Chemical Name:
- AMBERLITE STRONGLY ACIDIC CATION EXCHANGER
- CAS:
- 39464-90-9
- Structure:
- Chemical Name:
- 2,6-Dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester
- CAS:
- 569355-30-2
- MF:
- C16H14N2O4
- Structure:
- Chemical Name:
- 5-DesaMino 5-Oxo-2,5-dihydro LaMotrigine
- CAS:
- 252186-78-0
- MF:
- C9H6Cl2N4O
- Structure:
- Chemical Name:
- SulfanilaMide-13C6
- CAS:
- 1196157-89-7
- MF:
- C6H8N2O2S
- Structure:
- Chemical Name:
- 3-Amino-5-(4-morpholinylmethyl-d<sub>2</sub>)-2-Oxazolidinone-4,4,5-d<sub>3</sub>
- CAS:
- 1017793-94-0
- MF:
- C8H10D5N3O3
- Structure:
- Chemical Name:
- 4,5-DIMETHYL-3,6-DIOCTYLOXY-1,2-PHENYLENE-BIS(MERCURY TRIFLUOROACETATE)
- CAS:
- 145889-57-2
- MF:
- C28H40F6Hg2O6
- Structure:
- Chemical Name:
- 2-FLUORO-2'-NITRODIPHENYL ETHER
- CAS:
- 93974-08-4
- MF:
- C12H8FNO3
- Structure:
- Chemical Name:
- LARIXYL ACETATE
- CAS:
- 4608-49-5
- MF:
- C22H36O3
- Structure:
- Chemical Name:
- LITHIUM IONOPHORE VIII
- CAS:
- 133338-85-9
- MF:
- C48H83N3O6
- Structure:
- Chemical Name:
- 1,1'-BIS(4-SULFOBUTYL)-11-(4-ISOTHIOCYANATOPHENYLTHIO)-3,3,3',3'-TETRAMETHYL-10,12-TRI METHYLENEINDOTRICARBOCYANINE MONOSODIUM SALT
- CAS:
- 152111-91-6
- MF:
- C45H50N3NaO6S4
- Structure:
- Chemical Name:
- BENEDICT'S REAGENT FOR THE QUALITATIVE
- CAS:
- 63126-89-6
- MF:
- C7H10CuNa2O15S
- Structure:
- Chemical Name:
- R(+)-1-(PENTAFLUOROPHENYL)ETHANOL
- CAS:
- 104371-21-3
- MF:
- C8H5F5O
- Structure:
- Chemical Name:
- DIISOPROPYL O,O'-BIS(TRIMETHYLSILYL)-L-TARTRATE
- CAS:
- 130678-42-1
- MF:
- C16H34O6Si2
- Structure:
- Chemical Name:
- SULFOMOLYBDIC ACID
- MF:
- H2MoO7S
- Structure:
- Chemical Name:
- Clenbuterol-D9 HCl
- CAS:
- 184006-60-8
- MF:
- C12H10Cl3D9N2O
- Structure:
- Chemical Name:
- Bupropion Hydrochloride Related Compound B (15 mg) (2-(tert-butylamino)-3'-bromopropiophenone hydrochloride)
- CAS:
- 1049718-43-5
- MF:
- C13H19BrClNO
- Structure:
- Chemical Name:
- SulfaMerazine-13C6
- CAS:
- 1196157-80-8
- MF:
- C11H12N4O2S
- Structure:
- Chemical Name:
- SeMicarbazide-13C,15N2 Hydrochloride
- CAS:
- 1173020-16-0
- MF:
- CH6ClN3O
- Structure:
- Chemical Name:
- KJELDAHL TABLETS
- MF:
- CuNa2O12S3
- Chemical Name:
- POLYMETHACRYLIC ACID, CROSSLINKED, HYDROGEN FORM
- CAS:
- 50602-21-6
- MF:
- (C10H10.C4H6O2)x
- Chemical Name:
- AMBERLITE STRONGLY ACIDIC CATION EXCHANGER
- CAS:
- 12626-25-4
- Structure:
- Chemical Name:
- [12-(4-ETHYLPHENYL)DODECYL] 2-NITROPHENYL ETHER
- CAS:
- 155056-63-6
- MF:
- C26H37NO3
- Chemical Name:
- Sulfapyridine-13C6
- CAS:
- 1228182-45-3
- MF:
- C11H11N3O2S
- Structure:
- Chemical Name:
- 1,3-Bis(2-methoxyphenoxy)-2-propanol
- CAS:
- 16929-60-5
- MF:
- C17H20O5
- Chemical Name:
- AMBERLITE(R) IRA 958
- CAS:
- 79620-27-2
- Chemical Name:
- NONYLPHENYL-POLYETHYLENEGLYCOL ACETATE
- CAS:
- 54612-40-7
- MF:
- H19C9C6H4(OCH2CH2)nOCOCH3
- Structure:
- Chemical Name:
- ETH 2112
- CAS:
- 106327-92-8
- MF:
- C61H100O9
- Structure:
- Chemical Name:
- CHROMOIONOPHORE X
- CAS:
- 192190-92-4
- MF:
- C32H44F3NO
- Structure:
- Chemical Name:
- ETH 5435
- CAS:
- 141754-61-2
- MF:
- C54H108N2O2S2
- Structure:
- Chemical Name:
- S,S,S-tris(2-ethylhexyl)phosphorotrithioate
- CAS:
- 181629-03-8
- MF:
- C24H51OPS3
- Structure:
- Chemical Name:
- SILYBIN (A and B)(P)
- CAS:
- 142797-34-0
- MF:
- C25H22O10
- Structure:
- Chemical Name:
- TETRA-N-DODECYLAMMONIUM NITRATE
- CAS:
- 63893-35-6
- MF:
- C48H100N2O3
- Structure:
- Chemical Name:
- Sulfadimethoxine-d6
- CAS:
- 73068-02-7
- MF:
- C12H14N4O4S
- Structure:
- Chemical Name:
- N-Methyl-N-(triMethylsilyl)trifluoroacetaMide
- CAS:
- 945623-67-6
- MF:
- C6H3D9F3NOSi
- Structure:
- Chemical Name:
- TETRAHEXADECYLAMMONIUM BROMIDE
- CAS:
- 139653-55-7
- MF:
- C64H132BrN
- Structure:
- Chemical Name:
- ETH 1810
- CAS:
- 99281-50-2
- MF:
- C28H50N2O2
- Structure:
- Chemical Name:
- GLUTATHIONE REDUCED, IMMOBILIZED ON AGAROSE CL-4B
- MF:
- C10H17N3O6S
- Structure:
- Chemical Name:
- TETRAOCTYLAMMONIUM NITRATE
- CAS:
- 33734-52-0
- MF:
- C32H68N2O3
- Structure:
- Chemical Name:
- 10-HYDROXYDECYL BUTYRATE
- CAS:
- 80054-63-3
- MF:
- C14H28O3
- Structure:
- Chemical Name:
- 4-(7-DIETHYLAMINOCOUMARIN-3-YL)BENZOYL CYANIDE
- CAS:
- 203256-20-6
- MF:
- C21H18N2O3
- Structure:
- Chemical Name:
- 9-CARBAZOLEPROPIONIC ACID
- CAS:
- 6622-54-4
- MF:
- C15H13NO2