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
Molecular sieve 3A Molecular sieve 3A 308080-99-1 KnNa12-n[(AlO2)12(SiO2)12]xH2O
(-)-Camphanic acid chloride (-)-Camphanic acid chloride 39637-74-6 C10H13ClO3
DEVARDA'S ALLOY DEVARDA'S ALLOY 8049-11-4 AlCuZn
Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate 79060-88-1 C32H12BF24Na
BISPYRAZOLONE BISPYRAZOLONE 7477-67-0 C20H18N4O2
Neocuproine Neocuproine 484-11-7 C14H12N2
Imidocarb dipropionate Imidocarb dipropionate 55750-06-6 C25H32N6O5
Chloramphenicol palmitate Chloramphenicol palmitate 530-43-8 C27H42Cl2N2O6
9-Oxo-10(9H)-acridineacetic acid 9-Oxo-10(9H)-acridineacetic acid 38609-97-1 C15H11NO3
(+)-DIACETYL-L-TARTARIC ANHYDRIDE (+)-DIACETYL-L-TARTARIC ANHYDRIDE 6283-74-5 C8H8O7
2',7'-DICHLOROFLUORESCEIN 2',7'-DICHLOROFLUORESCEIN 76-54-0 C20H10Cl2O5
5-Methyl-1H-benzotriazole 5-Methyl-1H-benzotriazole 136-85-6 C7H7N3
2',6'-Pipecoloxylidide 2',6'-Pipecoloxylidide 15883-20-2 C14H20N2O
Giemsa stain Giemsa stain 51811-82-6 C14Cl1H14N3S1
Trifluoro(methanol)boron Trifluoro(methanol)boron 373-57-9 CH4BF3O
RHODAMINE B ISOTHIOCYANATE RHODAMINE B ISOTHIOCYANATE 36877-69-7 C29H30N3O3S.Cl
P-Toluenesulfonic anhydride P-Toluenesulfonic anhydride 4124-41-8 C14H14O5S2
3,3'-Dimethoxybenzidine dihydrochloride 3,3'-Dimethoxybenzidine dihydrochloride 20325-40-0 C14H18Cl2N2O2
(S)-(+)-alpha-Methoxyphenylacetic acid (S)-(+)-alpha-Methoxyphenylacetic acid 26164-26-1 C9H10O3
(R)-(-)-alpha-Methoxyphenylacetic acid (R)-(-)-alpha-Methoxyphenylacetic acid 3966-32-3 C9H10O3
(R)-(-)-O-Formylmandeloyl chloride (R)-(-)-O-Formylmandeloyl chloride 29169-64-0 C9H7ClO3
2,2-DIMETHYL-6,6,7,7,8,8,8-HEPTAFLUORO-3,5-OCTANEDIONE 2,2-DIMETHYL-6,6,7,7,8,8,8-HEPTAFLUORO-3,5-OCTANEDIONE 17587-22-3 C10H11F7O2
Tetrapropylammonium bisulfate Tetrapropylammonium bisulfate 56211-70-2 C12H29NO4S
Gabapentin-lactam Gabapentin-lactam 64744-50-9 C9H15NO
1,2,3,4-Tetrahydro-9-methylcarbazol-4-one 1,2,3,4-Tetrahydro-9-methylcarbazol-4-one 27387-31-1 C13H13NO
Dimethyloldimethyl hydantoin Dimethyloldimethyl hydantoin 6440-58-0 C7H12N2O4
3,5-Dimethylpyrazole 3,5-Dimethylpyrazole 67-51-6 C5H8N2
2-Bromo-4'-methoxyacetophenone 2-Bromo-4'-methoxyacetophenone 2632-13-5 C9H9BrO2
GLYCERIN BASE GLYCERIN BASE 77944-79-7 C3H8O3
(S)-(+)-ALPHA-METHOXY-ALPHA-TRIFLUOROMETHYLPHENYLACETYL CHLORIDE (S)-(+)-ALPHA-METHOXY-ALPHA-TRIFLUOROMETHYLPHENYLACETYL CHLORIDE 20445-33-4 C10H8ClF3O2
4'-(2-Methylpropyl)acetophenone 4'-(2-Methylpropyl)acetophenone 38861-78-8 C12H16O
(R)-(+)-1-Phenylethyl isocyanate (R)-(+)-1-Phenylethyl isocyanate 33375-06-3 C9H9NO
POTASSIUM TETRABORATE TETRAHYDRATE POTASSIUM TETRABORATE TETRAHYDRATE 12045-78-2 B4H8K2O11
1,3-Dimethyl-2-imidazolidinone 1,3-Dimethyl-2-imidazolidinone 80-73-9 C5H10N2O
MEDROXYPROGESTERONE MEDROXYPROGESTERONE 520-85-4 C22H32O3
1,3,3-Trimethyl-2-methyleneindoline 1,3,3-Trimethyl-2-methyleneindoline 118-12-7 C12H15N
N-Heptafluorobutyrylimidazole N-Heptafluorobutyrylimidazole 32477-35-3 C7H3F7N2O
2-Octyl-1-dodecanol 2-Octyl-1-dodecanol 5333-42-6 C20H42O
A23187 A23187 52665-69-7 C29H37N3O6
(S)-(-)-1-(1-Naphthyl)ethylamine (S)-(-)-1-(1-Naphthyl)ethylamine 10420-89-0 C12H13N
(R,R)-2,3-Butanediol (R,R)-2,3-Butanediol 24347-58-8 C4H10O2
HEMATOXYLIN HEMATOXYLIN 1412-19-7 C16H14O6
L(-)-2-Octanol L(-)-2-Octanol 5978-70-1 C8H18O
1-(2,6-Dichlorophenyl)indolin-2-one 1-(2,6-Dichlorophenyl)indolin-2-one 15362-40-0 C14H9Cl2NO
Oxipurinol Oxipurinol 2465-59-0 C5H4N4O2
STREPTAVIDIN STREPTAVIDIN 9013-20-1 C14H17BrClNO2S
(S)-(+)-5-OXOTETRAHYDROFURAN-2-CARBOXYLIC ACID (S)-(+)-5-OXOTETRAHYDROFURAN-2-CARBOXYLIC ACID 21461-84-7 C5H6O4
Ufiprazole Ufiprazole 73590-85-9 C17H19N3O2S
(S)-(-)-1-Phenylethyl isocyanate (S)-(-)-1-Phenylethyl isocyanate 14649-03-7 C9H9NO
TRANS-1,2-DIAMINOCYCLOHEXANE-N,N,N',N'-TETRAACETIC ACID MONOHYDRATE TRANS-1,2-DIAMINOCYCLOHEXANE-N,N,N',N'-TETRAACETIC ACID MONOHYDRATE 125572-95-4 C14H24N2O9
HEPES HEPES 7365-45-9 C8H18N2O4S
Pramoxine hydrochloride Pramoxine hydrochloride 637-58-1 C17H28ClNO3
5-(4-DIMETHYLAMINOBENZYLIDENE)RHODANINE 5-(4-DIMETHYLAMINOBENZYLIDENE)RHODANINE 536-17-4 C12H12N2OS2
TRIDODECYLAMINE TRIDODECYLAMINE 102-87-4 C36H75N
4-TRIFLUOROACETYL-3-METHYL-1-PHENYL-5-PYRAZOLONE 4-TRIFLUOROACETYL-3-METHYL-1-PHENYL-5-PYRAZOLONE 1691-93-6 C12H9F3N2O2
CAFFEIC ACID CAFFEIC ACID 501-16-6 C9H8O4
(R)-(+)-1-PHENYL-1-PROPANOL (R)-(+)-1-PHENYL-1-PROPANOL 1565-74-8 C9H12O
Pamabrom Pamabrom 606-04-2 C11H18BrN5O3
(1S)-(+)-3-Carene (1S)-(+)-3-Carene 498-15-7 C10H16
1-(2-(TRIMETHYLSILYL)ETHOXYCARBONYLOXY)& 1-(2-(TRIMETHYLSILYL)ETHOXYCARBONYLOXY)& 78269-85-9 C10H17NO5Si
ALMOND OIL ALMOND OIL 8007-69-0
SILANOL TERMINATED POLYDIMETHYLSILOXANE SILANOL TERMINATED POLYDIMETHYLSILOXANE 70131-67-8 HOSi
N-Phenyl-N-(4-piperidinyl)propanamide admixture with HCl salt N-Phenyl-N-(4-piperidinyl)propanamide admixture with HCl salt 1609-66-1 C14H20N2O
Ritalinic acid Ritalinic acid 19395-41-6 C13H17NO2
(S)-2-HYDROXYBUTYRIC ACID (S)-2-HYDROXYBUTYRIC ACID 3347-90-8 C4H8O3
(+)-CAMPHANIC ACID CHLORIDE (+)-CAMPHANIC ACID CHLORIDE 104530-16-7 C10H13ClO3
7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid 7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid 86393-33-1 C13H9ClFNO3
Chloramine-T trihydrate Chloramine-T trihydrate 7080-50-4 C7H13ClNNaO5S
2-(2-Methoxyphenoxy)ethylamine hydrochloride 2-(2-Methoxyphenoxy)ethylamine hydrochloride 64464-07-9 C9H14ClNO2
(S)-(+)-ALPHA-METHOXY-ALPHA-TRIFLUOROMETHYLPHENYLACETYL CHLORIDE (S)-(+)-ALPHA-METHOXY-ALPHA-TRIFLUOROMETHYLPHENYLACETYL CHLORIDE 39637-99-5 C10H8ClF3O2
N-(Allyloxycarbonyloxy)succinimide N-(Allyloxycarbonyloxy)succinimide 135544-68-2 C8H9NO5
Semicarbazide Semicarbazide 57-56-7 CH5N3O
N-BOC-IMIDAZOLE N-BOC-IMIDAZOLE 49761-82-2 C8H12N2O2
2-Methoxyethoxymethyl chloride  2-Methoxyethoxymethyl chloride 3970-21-6 C4H9ClO2
ALCIAN BLUE 8GX ALCIAN BLUE 8GX 75881-23-1 C56H68Cl4CuN16S4
L-1-Phenylethylamine L-1-Phenylethylamine 2627-86-3 C8H11N
(R)-(-)-5-OXOTETRAHYDROFURAN-2-CARBOXYLIC ACID (R)-(-)-5-OXOTETRAHYDROFURAN-2-CARBOXYLIC ACID 53558-93-3 C5H6O4
FAST BLUE B SALT  FOR MICROSCOPY FAST BLUE B SALT FOR MICROSCOPY 14263-94-6 C14 H12 Cl2 N4 O2 . Zn Cl2
Triclocarban Triclocarban 101-20-2 C13H9Cl3N2O
TETRA-N-BUTYLTHIURAM DISULFIDE TETRA-N-BUTYLTHIURAM DISULFIDE 1634-02-2 C18H36N2S4
Dibenzyl dicarbonate Dibenzyl dicarbonate 31139-36-3 C16H14O5
(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid (R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid 20445-31-2 C10H9F3O3
CHROMOTROPE 2B CHROMOTROPE 2B 548-80-1 C16H9N3Na2O10S2
2-Benzothiazolamine 2-Benzothiazolamine 136-95-8 C7H6N2S
Ammonium 1-pyrrolidinedithiocarbamate Ammonium 1-pyrrolidinedithiocarbamate 5108-96-3 C5H9NS2.H3N
Fenofibric acid Fenofibric acid 42017-89-0 C17H15ClO4
OMEPRAZOLE  RELATED  COMPOUND A  (15 MG) (OMEPRAZOLE SULFONE) (AS) OMEPRAZOLE RELATED COMPOUND A (15 MG) (OMEPRAZOLE SULFONE) (AS) 88546-55-8 C17H19N3O4S
Creatinine Creatinine 60-27-5 C4H7N3O
(S)-(-)-1-PHENYL-1-PROPANOL (S)-(-)-1-PHENYL-1-PROPANOL 613-87-6 C9H12O
(S)-(+)-1-Cyclohexylethylamine (S)-(+)-1-Cyclohexylethylamine 17430-98-7 C8H17N
meso-Tetra(4-carboxyphenyl)porphine meso-Tetra(4-carboxyphenyl)porphine 14609-54-2 C48H30N4O8
Potassium chloroplatinate Potassium chloroplatinate 16921-30-5 ClKPt
4-Acetoxyacetanilide 4-Acetoxyacetanilide 2623-33-8 C10H11NO3
Methyl-5-norbornene-2,3-dicarboxylic anhydride Methyl-5-norbornene-2,3-dicarboxylic anhydride 25134-21-8 C10H10O3
(S)-(-)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid (S)-(-)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid 17257-71-5 C10H9F3O3
TETRAMETHYLAMMONIUM HYDROGENSULFATE TETRAMETHYLAMMONIUM HYDROGENSULFATE 80526-82-5 C4H13NO4S
NITARSONE? NITARSONE? 98-72-6 C6H6AsNO5
2,4-Dinitrofluorobenzene 2,4-Dinitrofluorobenzene 70-34-8 C6H3FN2O4
TETRAPHENYLPHOSPHONIUM TETRAPHENYLBORATE TETRAPHENYLPHOSPHONIUM TETRAPHENYLBORATE 15525-15-2 C48H40BP
2,3,5-Triphenyltetrazolium chloride 2,3,5-Triphenyltetrazolium chloride 298-96-4 C19H15ClN4
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