Esters Aromatic acids fatty acid Fatty alcohols Boric acid Cyanide / nitrile Aromatic ketones Aromatic aldehydes Halogenated aliphatic hydrocarbons aliphatic ketones Amide Ethers Aromatics Aromatic alcohol Phosphine ligand Phenols Thiol / thiol Silane Acyl halide Sulfonates / Sulfinates salts Cyanate ester / isocyanate Nitro compounds Imide Olefin (cyclic and acyclic) The polycyclic compound Hydrazine Amine salt (ammonium salt) Aliphatic aldehydes Bicyclic compound Oxime Tricyclic compound Alkanes Sulfonyl halide Phosphonate / phosphonate Phosphorus halide Alkyne Carboxylic anhydride Urea Phosphorus-containing compound Siloxane Azo, diazo compound Ionic Liquids Thiocyanate / isothiocyanate Borate Sulfonates / Sulfinates Selenium compounds Guanidine salt Borane Thiourea Thiolate tetrafluoroborate Thiol ester Polycyclic compound Crown ether Sulfone, sulfoxide compound Hydrazone Imide, amidine Polyamines Tosylate Epoxide Azide Hydroxylamine Cyclodextrin
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Organic reagents

Esters Aromatic acids fatty acid Fatty alcohols Boric acid Cyanide / nitrile Aromatic ketones Aromatic aldehydes Halogenated aliphatic hydrocarbons aliphatic ketones Amide Ethers Aromatics Aromatic alcohol Phosphine ligand Phenols Thiol / thiol Silane Acyl halide Sulfonates / Sulfinates salts Cyanate ester / isocyanate Nitro compounds Imide Olefin (cyclic and acyclic) The polycyclic compound Hydrazine Amine salt (ammonium salt) Aliphatic aldehydes Bicyclic compound Oxime Tricyclic compound Alkanes Sulfonyl halide Phosphonate / phosphonate Phosphorus halide Alkyne Carboxylic anhydride Urea Phosphorus-containing compound Siloxane Azo, diazo compound Ionic Liquids Thiocyanate / isothiocyanate Borate Sulfonates / Sulfinates Selenium compounds Guanidine salt Borane Thiourea Thiolate tetrafluoroborate Thiol ester Polycyclic compound Crown ether Sulfone, sulfoxide compound Hydrazone Imide, amidine Polyamines Tosylate Epoxide Azide Hydroxylamine Cyclodextrin
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From early AD to mid-19 century, people mainly use the natural organic substance (such as animal and plant extracts) for qualitative analysis or quantitative analysis. From the second half of the 19th century to the 1920s, it had begun to appear of artificially synthetic organic reagent such as using potassium acetate xanthan for test of nickel, copper, and molybdenum; using morin for test of aluminum; using diazo coupling reaction for the detection of Nitrite; using α-β-nitroso naphthol for detection of cobalt; using dimethyglyoxime for nickel test.

After the proposal of the special-effects group in the 1930s and the proposal of theoretical analysis of functional groups theory in 1950s, people had carried out large-scale screen of organic reagents in search of special-effects analysis groups for different ions and had successfully synthesized a lot of agents of practical value (such as copper reagents, new copper agent, cadmium reagents, beryllium reagent, thorium reagents, etc.). Before the 1950s, the complex compound, in analytic chemistry, is mainly used in the aspects of the precipitation reaction of a binary chelate for the qualitative detection, precipitate isolation and gravimetric separation and other aspects. In the early 1950s and 1960, it is mainly in the form of complexometric titration. From the beginning of the late 1960s, the main focus has been moved to the photometric analysis. Meanwhile, it has been also developed of chelate organic solvent extraction.

8-hydroxy quinoline, hydrazones, oximes, hydroxamic acids, polyphenols, 1, 10-phenanthroline, phosphorus-oxygen extractant, β- diketones, triphenylmethane acid dye, xanthene dyes and azo dyes and other agents has all been widely studied and applied. On the other hand, the structural theoretical research (such as electronic effects, spatial effects and substituent effects) of the organic reagent can further facilitate the development of new-type organic reagents such as heterocyclic azo reagent. During this period, it has been also developed of monoazo chromotropic acid-type and disazo chromotropic acid-type reagent. During the mid-1970s, the chelating resin and adsorbents have achieved rapid development. Since the 1980s, Chinese researchers of analytical chemistry have made progress in the field of the synthesis and application of asymmetric disazo chromotropic acid.

Organic chemical reagents have wide application in analytic chemistry and are mainly used in solvents, precipitation agents, complexing agents, indicator, coloring reagent and surface active agent, etc. In order to adapt to a variety of analytical needs, sometimes it is required to purify certain reagents. For example, liquid organic reagent is often purified by distillation while solid substance is often purified through crystallization and sublimation. Substance having a high vapor pressure, namely having low purification boiling point and undergoing no decomposition under boiling temperature commonly applied atmospheric distillation; for less volatile and water-insoluble substance, namely having high purification point or undergoing decomposition under boiling temperature, we can apply vacuum distillation or steam distillation for purification of it.

Distillation is a commonly used method for laboratory purification of organic reagent. Conventional distillation apparatus generally comprises distiller, condenser and receiver, three parts with auxiliary section also containing heater, a thermometer, a wetted tube and cork.

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Structure:
Chemical Name:
2-INDANCARBOXYLIC ACID
CAS:
25177-85-9
MF:
C10H10O2
Structure:
Chemical Name:
(S)-(+)-Methyl glycidyl ether
CAS:
64491-68-5
MF:
C4H8O2
Structure:
Chemical Name:
4-(HYDROXYAMINO)QUINOLINE N-OXIDE
CAS:
4637-56-3
MF:
C9H8N2O2
Structure:
Chemical Name:
1,5-DIHYDROXYANTHRAQUINONE
CAS:
117-12-4
MF:
C14H8O4
Structure:
Chemical Name:
2-Indanol
CAS:
4254-29-9
MF:
C9H10O
Structure:
Chemical Name:
(2-BROMOBENZYL)METHYLAMINE
CAS:
698-19-1
MF:
C8H10BrN
Structure:
Chemical Name:
1,3-Diamino-2-propanol
CAS:
616-29-5
MF:
C3H10N2O
Structure:
Chemical Name:
ETHYL 2,5-DICHLOROBENZOATE
CAS:
35112-27-7
MF:
C9H8Cl2O2
Structure:
Chemical Name:
Isobornyl acrylate
CAS:
5888-33-5
MF:
C13H20O2
Structure:
Chemical Name:
2,4-DIMETHYLBENZYL CHLORIDE
CAS:
824-55-5
MF:
C9H11Cl
Structure:
Chemical Name:
METHYL 2-ACETAMIDO-5-CHLOROBENZOATE
CAS:
20676-54-4
MF:
C10H10ClNO3
Structure:
Chemical Name:
Cyclopentyl isocyanate
CAS:
4747-71-1
MF:
C6H9NO
Structure:
Chemical Name:
LIGNOCERIC ACID
CAS:
557-59-5
MF:
C24H48O2
Structure:
Chemical Name:
2-CHLORO-1,3,2-BENZODIOXABOROLE
CAS:
55718-76-8
MF:
C6H4BClO2
Structure:
Chemical Name:
4-ACETOXYACETOPHENONE
CAS:
13031-43-1
MF:
C10H10O3
Structure:
Chemical Name:
DIMETHYLCYANAMIDE
CAS:
1467-79-4
MF:
C3H6N2
Structure:
Chemical Name:
P-TOLUENESULFONIC ACID 3-NITROPHENYL ESTER
CAS:
3899-90-9
MF:
C13H11NO5S
Structure:
Chemical Name:
1H,1H,2H,2H-Perfluorooctyltriethoxysilane
CAS:
51851-37-7
MF:
C14H19F13O3Si
Structure:
Chemical Name:
1,4-Di-tert-butylbenzene
CAS:
1012-72-2
MF:
C14H22
Structure:
Chemical Name:
1-PENTYNE
CAS:
627-19-0
MF:
C5H8
Structure:
Chemical Name:
Indole-6-boronic acid
CAS:
147621-18-9
MF:
C8H8BNO2
Structure:
Chemical Name:
3,5-Dichlorosalicylic acid
CAS:
320-72-9
MF:
C7H4Cl2O3
Structure:
Chemical Name:
Decylamine
CAS:
2016-57-1
MF:
C10H23N
Structure:
Chemical Name:
2-Methylheptanoic acid
CAS:
1188-02-9
MF:
C8H16O2
Structure:
Chemical Name:
Oxygen-fluorine acid
CAS:
82419-35-0
MF:
C13H9F2NO4
Structure:
Chemical Name:
3-METHYLHIPPURIC ACID
CAS:
27115-49-7
MF:
C10H11NO3
Structure:
Chemical Name:
3-FLUOROPHENYL ISOCYANATE
CAS:
404-71-7
MF:
C7H4FNO
Structure:
Chemical Name:
1,1,1-TRIFLUORO-2-PROPANOL
CAS:
374-01-6
MF:
C3H5F3O
Structure:
Chemical Name:
3-METHYLGLUTARIC ACID
CAS:
626-51-7
MF:
C6H10O4
Structure:
Chemical Name:
3-CYANO-4-FLUOROBENZENESULFONYL CHLORIDE
CAS:
351003-23-1
MF:
C7H3ClFNO2S
Structure:
Chemical Name:
METHYLSULFONYLACETONITRILE
CAS:
2274-42-2
MF:
C3H5NO2S
Structure:
Chemical Name:
Cyclohexyl methacrylate
CAS:
101-43-9
MF:
C10H16O2
Structure:
Chemical Name:
Diethyl propylmalonate
CAS:
2163-48-6
MF:
C10H18O4
Structure:
Chemical Name:
2-Bromo-4-methylbenzaldehyde
CAS:
824-54-4
MF:
C8H7BrO
Structure:
Chemical Name:
2,3-Dimethylanisole
CAS:
2944-49-2
MF:
C9H12O
Structure:
Chemical Name:
O-ACETYLSALICYLOYL CHLORIDE
CAS:
5538-51-2
MF:
C9H7ClO3
Structure:
Chemical Name:
2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane
CAS:
2554-06-5
MF:
C12H24O4Si4
Structure:
Chemical Name:
Cetrimonium tosylate
CAS:
138-32-9
MF:
C26H49NO3S
Structure:
Chemical Name:
1-Hexaneboronic acid
CAS:
16343-08-1
MF:
C6H15BO2
Structure:
Chemical Name:
Tolyl diiodomethyl sulfone
CAS:
20018-09-1
MF:
C8H8I2O2S
Structure:
Chemical Name:
1,2-ETHANEDISULFONIC ACID DISODIUM SALT
CAS:
5325-43-9
MF:
C2H7NaO6S2
Structure:
Chemical Name:
PHENYL TRIFLUOROACETATE
CAS:
500-73-2
MF:
C8H5F3O2
Structure:
Chemical Name:
1,2,3,4-Tetrahydrocarbazole
CAS:
942-01-8
MF:
C12H13N
Structure:
Chemical Name:
DIPHENYLMETHYLSILANE
CAS:
776-76-1
MF:
C13H14Si
Structure:
Chemical Name:
2,4-Dimethoxybenzyl alcohol
CAS:
7314-44-5
MF:
C9H12O3
Structure:
Chemical Name:
1,3-Dibromobutane
CAS:
107-80-2
MF:
C4H8Br2
Structure:
Chemical Name:
2-Amino-5-chlorobenzaldehyde
CAS:
20028-53-9
MF:
C7H6ClNO
Structure:
Chemical Name:
n-Octyldimethylchlorosilane
CAS:
18162-84-0
MF:
C10H23ClSi
Structure:
Chemical Name:
ETHYL PENTAFLUOROPROPIONATE
CAS:
426-65-3
MF:
C5H5F5O2
Structure:
Chemical Name:
4-BROMOBENZAMIDE
CAS:
698-67-9
MF:
C7H6BrNO
Structure:
Chemical Name:
Hexaethylene glycol
CAS:
2615-15-8
MF:
C12H26O7
Structure:
Chemical Name:
(2-BROMOETHOXY)-TERT-BUTYLDIMETHYLSILANE
CAS:
86864-60-0
MF:
C8H19BrOSi
Structure:
Chemical Name:
Diphenyl isophthalate
CAS:
744-45-6
MF:
C20H14O4
Structure:
Chemical Name:
tert-Butyl phenyl carbonate
CAS:
6627-89-0
MF:
C11H14O3
Structure:
Chemical Name:
ETHYL OXAMATE
CAS:
617-36-7
MF:
C4H7NO3
Structure:
Chemical Name:
3-(TRIFLUOROMETHOXY)BENZYLAMINE
CAS:
93071-75-1
MF:
C8H8F3NO
Structure:
Chemical Name:
COMBRETASTATIN A-4
CAS:
117048-59-6
MF:
C18H20O5
Structure:
Chemical Name:
Methyl 2-(chlorosulfonyl)benzoate
CAS:
26638-43-7
MF:
C8H7ClO4S
Structure:
Chemical Name:
Heptyl 4-hydroxybenzoate
CAS:
1085-12-7
MF:
C14H20O3
Structure:
Chemical Name:
1-HEPTYN-3-OL
CAS:
7383-19-9
MF:
C7H12O
Structure:
Chemical Name:
Benzyl Glycidyl Ether
CAS:
89616-40-0
MF:
C10H12O2
Structure:
Chemical Name:
4-Aminophthalimide
CAS:
3676-85-5
MF:
C8H6N2O2
Structure:
Chemical Name:
1-OCTANESULFONIC ACID, SODIUM SALT, MONOHYDRATE
CAS:
207596-29-0
MF:
C8H21NaO4S
Structure:
Chemical Name:
N,N-Dibenzylhydroxylamine
CAS:
621-07-8
MF:
C14H15NO
Structure:
Chemical Name:
PHENYLARSONIC ACID
CAS:
98-05-5
MF:
C6H7AsO3
Structure:
Chemical Name:
3,6-Dithia-1,8-octanediol
CAS:
5244-34-8
MF:
C6H14O2S2
Structure:
Chemical Name:
1-METHYL-1,4-CYCLOHEXADIENE
CAS:
4313-57-9
MF:
C7H10
Structure:
Chemical Name:
3,4-Dinitrochlorobenzene
CAS:
610-40-2
MF:
C6H3ClN2O4
Structure:
Chemical Name:
METHYL PHENYL SULFOXIDE
CAS:
1193-82-4
MF:
C7H8OS
Structure:
Chemical Name:
4-BROMO-2-METHYLPHENYLTHIOUREA
CAS:
109317-23-9
MF:
C8H9BrN2S
Structure:
Chemical Name:
5-BROMO-2-NITRO-BENZOIC ACID
CAS:
6950-43-2
MF:
C7H4BrNO4
Structure:
Chemical Name:
1-(4-ETHOXYCARBONYLPHENYL)-2-THIOUREA
CAS:
23051-16-3
MF:
C10H12N2O2S
Structure:
Chemical Name:
3-Pyridineacrylic acid
CAS:
1126-74-5
MF:
C8H7NO2
Structure:
Chemical Name:
4,4'-Ethylenedianiline
CAS:
621-95-4
MF:
C14H16N2
Structure:
Chemical Name:
Dimethyl nitroterephthalate
CAS:
5292-45-5
MF:
C10H9NO6
Structure:
Chemical Name:
N,N'-DIISOPROPYLTHIOUREA
CAS:
2986-17-6
MF:
C7H16N2S
Structure:
Chemical Name:
1-BUTYL-2,3-DIMETHYLIMIDAZOLIUM CHLORIDE
CAS:
98892-75-2
MF:
C9H17ClN2
Structure:
Chemical Name:
4'-Methylbiphenyl-2-carboxylic acid
CAS:
7148-03-0
MF:
C14H12O2
Structure:
Chemical Name:
Methyl phenyl sulfone
CAS:
3112-85-4
MF:
C7H8O2S
Structure:
Chemical Name:
BENZOYL BROMIDE
CAS:
618-32-6
MF:
C7H5BrO
Structure:
Chemical Name:
5-Nitro-1,10-phenanthroline
CAS:
4199-88-6
MF:
C12H7N3O2
Structure:
Chemical Name:
2-Ethylphenol
CAS:
90-00-6
MF:
C8H10O
Structure:
Chemical Name:
2-[(4-CHLOROPHENYL)SULFONYL]-N'-HYDROXYETHANIMIDAMIDE
CAS:
70661-64-2
MF:
C8H9ClN2O3S
Structure:
Chemical Name:
4-Hydroxybenzhydrazide
CAS:
5351-23-5
MF:
C7H8N2O2
Structure:
Chemical Name:
4-BROMOBENZENESULFINIC ACID SODIUM SALT DIHYDRATE
CAS:
175278-64-5
MF:
C6H8BrNaO3S
Structure:
Chemical Name:
3-Methoxyphenylhydrazine hydrochloride
CAS:
39232-91-2
MF:
C7H11ClN2O
Structure:
Chemical Name:
PHENOXATHIIN
CAS:
262-20-4
MF:
C12H8OS
Structure:
Chemical Name:
3-ISOPROPYLPHENOL
CAS:
618-45-1
MF:
C9H12O
Structure:
Chemical Name:
meso-2,3-Dibromosuccinic acid
CAS:
608-36-6
MF:
C4H4Br2O4
Structure:
Chemical Name:
3-ALLYLSALICYLALDEHYDE
CAS:
24019-66-7
MF:
C10H10O2
Structure:
Chemical Name:
1-(4-FLUOROPHENYL)-2-THIOUREA
CAS:
459-05-2
MF:
C7H7FN2S
Structure:
Chemical Name:
2-Fluorobenzamide
CAS:
445-28-3
MF:
C7H6FNO
Structure:
Chemical Name:
4-(METHYLSULFONYL)BENZONITRILE
CAS:
22821-76-7
MF:
C8H7NO2S
Structure:
Chemical Name:
4-Methylthiophene-2-boronic acid
CAS:
162607-15-0
MF:
C5H7BO2S
Structure:
Chemical Name:
S-ETHYLISOTHIOUREA HYDROBROMIDE
CAS:
1071-37-0
MF:
C3H9BrN2S
Structure:
Chemical Name:
3-Hydroxyphenylacetylene
CAS:
10401-11-3
MF:
C8H6O
Structure:
Chemical Name:
2,6-Dichloro-4-nitroaniline
CAS:
99-30-9
MF:
C6H4Cl2N2O2
Structure:
Chemical Name:
4-Fluoro-3-methoxyphenylacetic acid
CAS:
78495-65-5
MF:
C10H11FO4
Structure:
Chemical Name:
6-Bromonaphthalen-2-amine
CAS:
7499-66-3
MF:
C10H8BrN
Structure:
Chemical Name:
4-STYRENESULFONIC ACID, SODIUM SALT HYDR ATE
CAS:
123333-94-8
MF:
C8H7NaO3S.xH2O