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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- Chemical Name:
- AQUAPHENOL(TM)
- Structure:
- Chemical Name:
- O-DESMETHYLNAPROXEN
- CAS:
- 52079-10-4
- MF:
- C13H12O3
- Structure:
- Chemical Name:
- sulfamethoxazole hydroxylamine
- CAS:
- 114438-33-4
- MF:
- C10H11N3O4S
- Structure:
- Chemical Name:
- propranolol glycol
- CAS:
- 36112-95-5
- MF:
- C13H14O3
- Structure:
- Chemical Name:
- WITHANOSIDEIV
- CAS:
- 362472-81-9
- MF:
- C40H62O15
- Structure:
- Chemical Name:
- N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide
- CAS:
- 1672-58-8
- MF:
- C12H13N3O2
- Structure:
- Chemical Name:
- TETRADECYLTRIMETHYLAMMONIUM HYDROGEN SULFATE
- CAS:
- 104903-23-3
- MF:
- C17H39NO4S
- Chemical Name:
- PHENYL RESIN
- CAS:
- 69106-59-8
- Structure:
- Chemical Name:
- 2-FLUOROETHYL CHLOROFORMATE
- CAS:
- 462-27-1
- MF:
- C3H4ClFO2
- Structure:
- Chemical Name:
- CARBOL GENTIAN VIOLET
- MF:
- C31H35N3O
- Structure:
- Chemical Name:
- 2-NITROPHENYL PENTYL ETHER
- CAS:
- 39645-91-5
- MF:
- C11H15NO3
- Structure:
- Chemical Name:
- TETRAOCTADECYLAMMONIUM BROMIDE
- CAS:
- 63462-99-7
- MF:
- C72H148BrN
- Chemical Name:
- ZEOLITE, TYPE: ZSM-5
- CAS:
- 308081-08-5
- MF:
- AlKO4S
- Chemical Name:
- FORMVAR(R)
- CAS:
- 63148-64-1
- Structure:
- Chemical Name:
- N,N'-BIS[2-[5-(DIMETHYLAMINOMETHYL)FURFURYLTHIO]ETHYL]-2-NITRO-1,1-ETHENDIAMINE
- CAS:
- 72126-78-4
- MF:
- C22H35N5O4S2
- Chemical Name:
- TISAB
- Structure:
- Chemical Name:
- (+)-ISOPULEGOL
- CAS:
- 104870-56-6
- MF:
- C10H18O
- Structure:
- Chemical Name:
- 1-NAPHTHYLACETIC ANHYDRIDE
- CAS:
- 5415-58-7
- MF:
- C24H18O3
- Structure:
- Chemical Name:
- Sulfolex-13C6
- CAS:
- 1189426-16-1
- MF:
- C10H10N4O2S
- Structure:
- Chemical Name:
- Benzoic acid (trifluoromethanesulfonic acid)anhydride
- CAS:
- 36967-85-8
- MF:
- C8H5F3O4S
- Structure:
- Chemical Name:
- Allyl(tert-butyl)dimethylsilane
- CAS:
- 74472-22-3
- MF:
- C9H20Si
- Structure:
- Chemical Name:
- L-Valine 2-Hydroxyethyl Ester 4-Methylbenzenesulfonate
- CAS:
- 86150-61-0
- MF:
- C14H23NO6S
- Structure:
- Chemical Name:
- Clarithromycin Impurity Q (10 mg) (N-oxide clarithromycin)
- CAS:
- 118074-07-0
- MF:
- C38H69NO14
- Structure:
- Chemical Name:
- 6-FLUORO-1,4-DIHYDRO-4-OXO-1-PENTADEUTEROETHYL-7-PIPERAZINO-3-QUINOLINECARBOXYLIC ACID
- CAS:
- 1015856-57-1
- MF:
- C16H13D5FN3O3
- Structure:
- Chemical Name:
- CALCIUM GLYCEROPHOSPHATE
- CAS:
- 1336-00-1
- MF:
- C3H7CaO6P
- Structure:
- Chemical Name:
- EOSIN METHYLENE-BLUE
- CAS:
- 6359-04-2
- MF:
- C21H11Br4KO5
- Structure:
- Chemical Name:
- 4-HYDROXYANTIPYRINE
- CAS:
- 1672-63-5
- MF:
- C11H12N2O2
- Structure:
- Chemical Name:
- 5,5-DIPHENYL-D10-HYDANTOIN
- CAS:
- 65854-97-9
- MF:
- C15H2D10N2O2
- Structure:
- Chemical Name:
- (1S)-(-)-TRANS-PINANE
- CAS:
- 10281-53-5
- MF:
- C10H18
- Structure:
- Chemical Name:
- 4-(N-PHTHALIMIDYL)BENZOLSULFONYL CHLORID
- CAS:
- 114341-14-9
- MF:
- C14H10ClNO3S
- Structure:
- Chemical Name:
- 1-DODECYLOXY-2-NITROBENZENE
- CAS:
- 83027-71-8
- MF:
- C18H29NO3
- Structure:
- Chemical Name:
- CYTIDYLYL-(3'->5')-GUANOSINE
- CAS:
- 2382-65-2
- MF:
- C19H25N8O12P
- Structure:
- Chemical Name:
- 1-(2-NAPHTHOYL)IMIDAZOLE
- CAS:
- 141903-34-6
- MF:
- C14H10N2O
- Structure:
- Chemical Name:
- 4-nitrososulfamethoxazole
- CAS:
- 131549-85-4
- MF:
- C10H9N3O4S
- Structure:
- Chemical Name:
- TRANS-TERPIN
- CAS:
- 565-50-4
- MF:
- C10H20O2
- Structure:
- Chemical Name:
- Epoxyacrylate Oligomer
- CAS:
- 71281-65-7
- MF:
- C27H32O8
- Structure:
- Chemical Name:
- BIS(1-BUTYLPENTYL) DECANE-1,10-DIYL DIGLUTARATE
- CAS:
- 101342-76-1
- MF:
- C38H70O8
- Structure:
- Chemical Name:
- 6ALPHA-HYDROXYESTRADIOL
- CAS:
- 1229-24-9
- MF:
- C18H24O3
- Structure:
- Chemical Name:
- (+)-1-(9-FLUORENYL)ETHYL CHLOROFORMATE
- CAS:
- 107474-79-3
- MF:
- C16H13ClO2
- Structure:
- Chemical Name:
- BRADYKININ, ACETATE SALT, 98
- CAS:
- 6846-03-3
- MF:
- C50H73N15O11
- Structure:
- Chemical Name:
- Ethylenediaminetetraacetate-copper-ammonia complex
- CAS:
- 67989-88-2
- MF:
- C10H20CuN4O8
- Structure:
- Chemical Name:
- SODIUM TETRA(P-TOLYL)BORATE
- CAS:
- 15738-23-5
- MF:
- B1C28H28Na1
- Chemical Name:
- SEPHAROSE CL-6B
- CAS:
- 62610-50-8
- MF:
- NULL
- Structure:
- Chemical Name:
- 4-methyl-1H-benzotriazole
- CAS:
- 29878-31-7
- MF:
- C7H7N3
- Structure:
- Chemical Name:
- 2,2,2-Trifluoro-N-phenylacetimidic Acid Benzyl Ester
- CAS:
- 952057-61-3
- MF:
- C15H12F3NO
- Structure:
- Chemical Name:
- N-OCTADECANOYL-NILE BLUE
- CAS:
- 125829-24-5
- MF:
- C38H53N3O2
- Structure:
- Chemical Name:
- ETH 5214
- CAS:
- 119110-37-1
- MF:
- C32H62N4O4
- Structure:
- Chemical Name:
- Allyltriethylsilane
- CAS:
- 17898-21-4
- MF:
- C9H20Si
- Chemical Name:
- OCTYL RESIN
- CAS:
- 68652-09-5
- Structure:
- Chemical Name:
- CARBOXYIBUPROFEN
- CAS:
- 15935-54-3
- MF:
- C13H16O4
- Chemical Name:
- DIETHYL[2-HYDROXYPROPYL]AMINOETHYL SEPHADEX
- CAS:
- 52219-08-6
- Structure:
- Chemical Name:
- 4'-(2-pyridylsulphamoyl)acetanilide
- CAS:
- 19077-98-6
- MF:
- C13H13N3O3S
- Structure:
- Chemical Name:
- 2,3,4,6-TETRA-O-PIVALOYL-BETA-D-GALACTOPYRANOSYL ISOTHIOCYANATE
- CAS:
- 147948-52-5
- MF:
- C27H43NO9S
- Chemical Name:
- DBA
- CAS:
- 96508-08-6
- Structure:
- Chemical Name:
- 1-Hydroxyibuprofen
- CAS:
- 53949-53-4
- MF:
- C13H18O3
- Structure:
- Chemical Name:
- Carvedilol Bis-carbazole
- CAS:
- 918903-20-5
- MF:
- C39H39N3O6
- Chemical Name:
- APIEZON GREASE L
- CAS:
- 12678-02-3
- Structure:
- Chemical Name:
- Dodecyltrimethylammonium hydrogen sulfate
- CAS:
- 103999-25-3
- MF:
- C15H35NO4S
- Structure:
- Chemical Name:
- 2-(Trimethylsilyl)ethyl 3-Nitro-1H-1,2,4-triazole-1-carboxylate
- CAS:
- 1001067-09-9
- MF:
- C8H14N4O4Si
- Structure:
- Chemical Name:
- Poloxamer 188 CRS
- CAS:
- 106392-12-5
- MF:
- C18H36O5X2
- Structure:
- Chemical Name:
- ACETAMINOPHEN-D3
- CAS:
- 60902-28-5
- MF:
- C8H6D3NO2
- Structure:
- Chemical Name:
- 3-Benzoylthiazolidine-2-thione
- CAS:
- 70326-37-3
- MF:
- C10H9NOS2
- Structure:
- Chemical Name:
- ChloroMethyl 2,2,2-Trichloroethyl Ether
- CAS:
- 69573-75-7
- MF:
- C3H4Cl4O
- Structure:
- Chemical Name:
- 2,3-DIHYDROXY-BIPHENYL
- CAS:
- 1133-63-7
- MF:
- C12H10O2
- Structure:
- Chemical Name:
- (2R,4R)-5,5-DIMETHYL-2-HYDROXY-4-PHENYL-1,3,2-DIOXAPHOSPHORINAN 2-OXIDE
- CAS:
- 98674-80-7
- MF:
- C11H15O4P
- Chemical Name:
- ARND'S ALLOY
- CAS:
- 51636-39-6
- Structure:
- Chemical Name:
- ETH 149
- CAS:
- 58821-96-8
- MF:
- C25H50N2O4
- Structure:
- Chemical Name:
- BIS[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENYL] PHOSPHATE CALCIUM SALT
- CAS:
- 40835-97-0
- MF:
- C28H45CaO4P
- Structure:
- Chemical Name:
- 4-TERT-BUTYLCALIX(6)ARENE-HEXAACETIC ACID HEXAETHYL ESTER
- CAS:
- 92003-62-8
- MF:
- C90H120O18
- Structure:
- Chemical Name:
- (S)-6-METHOXY-2,5,7,8-TETRAMETHYLCHROMANE-2-CARBOXYLIC ACID
- CAS:
- 135806-59-6
- MF:
- C15H20O4
- Structure:
- Chemical Name:
- CARBONATE IONOPHORE II
- CAS:
- 129476-48-8
- MF:
- C20H29F3O3S
- Structure:
- Chemical Name:
- PARACETAMOL SULFATE POTASSIUM SALT
- CAS:
- 32113-41-0
- MF:
- C8H10KNO5S
- Structure:
- Chemical Name:
- COPPER(II) IONOPHORE IV
- CAS:
- 849629-03-4
- MF:
- C28H48N2O2S
- Structure:
- Chemical Name:
- 1-Oxo Ibuprofen
- CAS:
- 65813-55-0
- MF:
- C13H16O3
- Chemical Name:
- HARDNESS INDICATOR
- Chemical Name:
- SP SEPHADEX
- CAS:
- 61374-06-9
- Structure:
- Chemical Name:
- Boron trifluoride-ethanol
- MF:
- C2H6BF3O
- Structure:
- Chemical Name:
- COPPER(II) IONOPHORE I
- CAS:
- 125769-67-7
- MF:
- C26H44N2S4
- Chemical Name:
- BUTYL RESIN
- CAS:
- 157885-28-4
- Chemical Name:
- AMBERLITE(R) IRP-64 ION-EXCHANGE RESIN
- CAS:
- 80892-32-6
- Structure:
- Chemical Name:
- BISTRIFLUOROMETHANESULFONIMIDE TETRAETHYLAMMONIUM SALT
- CAS:
- 161401-26-9
- MF:
- C10H20F6N2O4S2
- Structure:
- Chemical Name:
- 5-Acetyl-1,3-dimethylbarbituric
- CAS:
- 58713-03-4
- MF:
- C8H10N2O4
- Structure:
- Chemical Name:
- Fenbendazole-d3
- CAS:
- 1228182-47-5
- MF:
- C15H10D3N3O2S
- Structure:
- Chemical Name:
- 2-[(Octadecyloxy)methyl]pyridine
- CAS:
- 1228182-56-6
- MF:
- C24H43NO
- Structure:
- Chemical Name:
- Bupropion Hydrochloride Related Compound A (15 mg) (2-(tert-butylamino)-4'-chloropropiophenone hydrochloride)
- CAS:
- 1049718-72-0
- MF:
- C13H19Cl2NO
- Structure:
- Chemical Name:
- DMABA NHS ester
- CAS:
- 58068-85-2
- MF:
- C13H14N2O4
- Structure:
- Chemical Name:
- Sn(IV) Octaethylporphine dichloride
- CAS:
- 25777-43-9
- MF:
- C36H54Cl2N4Sn
- Structure:
- Chemical Name:
- TRI-SIL(R) Z
- CAS:
- 8077-35-8
- MF:
- C11H17N3Si
- Structure:
- Chemical Name:
- ETH 4030
- CAS:
- 119110-38-2
- MF:
- C30H58N4O4
- Structure:
- Chemical Name:
- 2-ACETYLBENZALDEHYDE 95
- CAS:
- 24257-93-0
- MF:
- C9H8O2
- Chemical Name:
- Sephacryl S-500 HR
- CAS:
- 65546-95-4
- Structure:
- Chemical Name:
- ATENOLOL-D7
- CAS:
- 1202864-50-3
- MF:
- C14H15D7N2O3
- Structure:
- Chemical Name:
- CETYLTRIMETHYLAMMONIUM DIHYDROGEN PHOSPHATE
- CAS:
- 111412-68-1
- MF:
- C19H44NO4P
- Structure:
- Chemical Name:
- CHROMOIONOPHORE II
- CAS:
- 138833-46-2
- MF:
- C38H48O5
- Structure:
- Chemical Name:
- TRIETHYLAMMONIUM FORMATE
- CAS:
- 15715-58-9
- MF:
- C7H17NO3
- Structure:
- Chemical Name:
- S(-)-1-(PENTAFLUOROPHENYL)ETHANOL
- CAS:
- 104371-20-2
- MF:
- C8H5F5O
- Structure:
- Chemical Name:
- CALIX[6]ARENE-HEXAACETIC ACID HEXAETHYL ESTER
- CAS:
- 97600-45-8
- MF:
- C66H72O18
- Structure:
- Chemical Name:
- ETH 2041
- CAS:
- 103225-03-2
- MF:
- C61H98O9
- Structure:
- Chemical Name:
- (+)-TRANS-LIMONENE 1,2-EPOXIDE
- CAS:
- 6909-30-4
- MF:
- C10H16O
- Structure:
- Chemical Name:
- (+)-TRANS-MYRTANOL
- CAS:
- 132203-71-5
- MF:
- C10H18O