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:
Methyl tributyl ammonium chloride
CAS:
56375-79-2
MF:
C13H30ClN
Structure:
Chemical Name:
4-Fluoronaphtalene-1-boronic acid
CAS:
182344-25-8
MF:
C10H8BFO2
Structure:
Chemical Name:
3-Benzyloxyphenol
CAS:
3769-41-3
MF:
C13H12O2
Structure:
Chemical Name:
CHLOROMETHYL PHENYL SULFONE
CAS:
7205-98-3
MF:
C7H7ClO2S
Structure:
Chemical Name:
3-METHYL-2-PENTANONE
CAS:
565-61-7
MF:
C6H12O
Structure:
Chemical Name:
2-(1,3-Dioxolan-2-yl)ethyltriphenylphosphonium bromide
CAS:
86608-70-0
MF:
C23H24BrO2P
Structure:
Chemical Name:
4-(Trifluoromethyl)cyclohexanecarboxylic acid
CAS:
95233-30-0
MF:
C8H11F3O2
Structure:
Chemical Name:
CACODYLIC ACID
CAS:
75-60-5
MF:
C2H7AsO2
Structure:
Chemical Name:
3-Methyl-2-nitroanisole
CAS:
5345-42-6
MF:
C8H9NO3
Structure:
Chemical Name:
2,2-DIPHENYLPROPIONIC ACID
CAS:
5558-66-7
MF:
C15H14O2
Structure:
Chemical Name:
4-(DIFLUOROMETHOXY)BENZOIC ACID
CAS:
4837-20-1
MF:
C8H6F2O3
Structure:
Chemical Name:
IRON(II) TRIFLUOROMETHANESULFONATE
CAS:
59163-91-6
MF:
C2F6FeO6S2
Structure:
Chemical Name:
Bis(trimethylsilyl)sulfate
CAS:
18306-29-1
MF:
C6H18O4SSi2
Structure:
Chemical Name:
2-Ethylhexanoyl chloride
CAS:
760-67-8
MF:
C8H15ClO
Structure:
Chemical Name:
3-METHYL-3-BUTEN-1-OL
CAS:
763-32-6
MF:
C5H10O
Structure:
Chemical Name:
Dimethyl aminoterephthalate
CAS:
5372-81-6
MF:
C10H11NO4
Structure:
Chemical Name:
DIETHYL BENZYLIDENEMALONATE
CAS:
5292-53-5
MF:
C14H16O4
Structure:
Chemical Name:
1,3-PROPANEDIOL DI-P-TOLUENESULFONATE
CAS:
5469-66-9
MF:
C17H20O6S2
Structure:
Chemical Name:
N-DECYLTRICHLOROSILANE
CAS:
13829-21-5
MF:
C10H21Cl3Si
Structure:
Chemical Name:
4-ISOPROPYLBENZENESULFONYL CHLORIDE
CAS:
54997-90-9
MF:
C9H11ClO2S
Structure:
Chemical Name:
3,5-DICHLORO-4-METHOXYBENZENEBORONIC ACID
CAS:
175883-61-1
MF:
C7H7BCl2O3
Structure:
Chemical Name:
1,2-BENZENEDITHIOL
CAS:
17534-15-5
MF:
C6H6S2
Structure:
Chemical Name:
BROMOMETHYLDIMETHYLCHLOROSILANE
CAS:
16532-02-8
MF:
C3H8BrClSi
Structure:
Chemical Name:
3-Phenoxypropionic acid
CAS:
7170-38-9
MF:
C9H10O3
Structure:
Chemical Name:
Methyl 2,3-dichloropropionate
CAS:
3674-09-7
MF:
C4H6Cl2O2
Structure:
Chemical Name:
1-Phenyl-1,2-propanedione-2-oxime
CAS:
119-51-7
MF:
C9H9NO2
Structure:
Chemical Name:
Methyl phenylsulfonylacetate
CAS:
34097-60-4
MF:
C9H10O4S
Structure:
Chemical Name:
Iohexol
CAS:
66108-95-0
MF:
C19H26I3N3O9
Structure:
Chemical Name:
3-FLUOROPROPAN-1-OL
CAS:
462-43-1
MF:
C3H7FO
Structure:
Chemical Name:
DL-Adrenalin
CAS:
329-65-7
MF:
C9H13NO3
Structure:
Chemical Name:
4-CHLOROPHENYL ISOTHIOCYANATE
CAS:
2131-55-7
MF:
C7H4ClNS
Structure:
Chemical Name:
TETRAETHYLAMMONIUM PERCHLORATE
CAS:
2567-83-1
MF:
C8H20ClNO4
Structure:
Chemical Name:
1,1-DIMETHYLUREA
CAS:
598-94-7
MF:
C3H8N2O
Structure:
Chemical Name:
Cholesteryl stearate
CAS:
35602-69-8
MF:
C45H80O2
Structure:
Chemical Name:
1,9-DECADIYNE
CAS:
1720-38-3
MF:
C10H14
Structure:
Chemical Name:
4,4'-Bis(dimethylamino)thiobenzophenone
CAS:
1226-46-6
MF:
C17H20N2S
Structure:
Chemical Name:
Di-o-tolylguanidine
CAS:
97-39-2
MF:
C15H17N3
Structure:
Chemical Name:
2-METHYLHIPPURIC ACID
CAS:
42013-20-7
MF:
C10H11NO3
Structure:
Chemical Name:
Octadecyl acrylate
CAS:
4813-57-4
MF:
C21H40O2
Structure:
Chemical Name:
EXO-3,6-EPOXY-1,2,3,6-TETRAHYDROPHTHALIC ANHYDRIDE
CAS:
6118-51-0
MF:
C8H6O4
Structure:
Chemical Name:
O-(TRIMETHYLSILYL)HYDROXYLAMINE
CAS:
22737-36-6
MF:
C3H11NOSi
Structure:
Chemical Name:
1,3-DICHLOROTETRAMETHYLDISILOXANE
CAS:
2401-73-2
MF:
C4H12Cl2OSi2
Structure:
Chemical Name:
2,4-BIS(TRIFLUOROMETHYL)BENZOIC ACID
CAS:
32890-87-2
MF:
C9H4F6O2
Structure:
Chemical Name:
N,N,N',N'-Tetramethyl-1,4-phenylenediamine
CAS:
100-22-1
MF:
C10H16N2
Structure:
Chemical Name:
9-BBN TRIFLATE
CAS:
62731-43-5
MF:
C9H14BF3O3S
Structure:
Chemical Name:
Fullerene C60
CAS:
131159-39-2
MF:
C60
Structure:
Chemical Name:
3-Isoxazolecarboxylic acid
CAS:
3209-71-0
MF:
C4H3NO3
Structure:
Chemical Name:
TETRAMETHYLAMMONIUM TETRAFLUOROBORATE
CAS:
661-36-9
MF:
C4H12BF4N
Structure:
Chemical Name:
4-Phenoxybutyl chloride
CAS:
2651-46-9
MF:
C10H13ClO
Structure:
Chemical Name:
N,N'-DICYCLOHEXYLUREA
CAS:
2387-23-7
MF:
C13H24N2O
Structure:
Chemical Name:
3-Benzyloxy-4-methoxybenzaldehyde
CAS:
6346-05-0
MF:
C15H14O3
Structure:
Chemical Name:
METHANESULFONIC ACID 2-ISOPROPOXYETHYL ESTER
CAS:
235097-76-4
MF:
C6H14O4S
Structure:
Chemical Name:
4-METHOXYPHENYL ISOTHIOCYANATE
CAS:
2284-20-0
MF:
C8H7NOS
Structure:
Chemical Name:
Diethyl 2-ethyl-2-phenylmalonate
CAS:
76-67-5
MF:
C15H20O4
Structure:
Chemical Name:
ISOPROPYLSULFONYL CHLORIDE
CAS:
10147-37-2
MF:
C3H7ClO2S
Structure:
Chemical Name:
Ethyl 4-etoxybenzoate
CAS:
23676-09-7
MF:
C11H14O3
Structure:
Chemical Name:
4-(Trifluoromethylthio)aniline
CAS:
372-16-7
MF:
C7H6F3NS
Structure:
Chemical Name:
BENZENESULFONYL ISOCYANATE
CAS:
2845-62-7
MF:
C7H5NO3S
Structure:
Chemical Name:
3,5-DIMETHYLBENZENESULFONYL CHLORIDE
CAS:
2905-27-3
MF:
C8H9ClO2S
Structure:
Chemical Name:
Bismaleimide
CAS:
13676-54-5
MF:
C21H14N2O4
Structure:
Chemical Name:
2-Chloro-1,4-naphthoquinone
CAS:
1010-60-2
MF:
C10H5ClO2
Structure:
Chemical Name:
2,4-DIFLUOROPHENYL ISOTHIOCYANATE
CAS:
141106-52-7
MF:
C7H3F2NS
Structure:
Chemical Name:
2,6-DIHYDROXYANTHRAQUINONE
CAS:
84-60-6
MF:
C14H8O4
Structure:
Chemical Name:
4-METHOXYAZOBENZENE
CAS:
2396-60-3
MF:
C13H12N2O
Structure:
Chemical Name:
2-CHLOROETHYL PHENYL SULFONE
CAS:
938-09-0
MF:
C8H9ClO2S
Structure:
Chemical Name:
ALPHA-CYCLODEXTRIN HYDRATE
CAS:
51211-51-9
MF:
C36H62O31
Structure:
Chemical Name:
Phenyl 1-hydroxy-2-naphthoate
CAS:
132-54-7
MF:
C17H12O3
Structure:
Chemical Name:
1,3-Bis(3-aminopropyl)tetramethyldisiloxane
CAS:
2469-55-8
MF:
C10H28N2OSi2
Structure:
Chemical Name:
Tetrakis(dimethylsiloxy)silane
CAS:
17082-47-2
MF:
C8H28O4Si5
Structure:
Chemical Name:
1-tert-Butyl-3,5-dimethylbenzene
CAS:
98-19-1
MF:
C12H18
Structure:
Chemical Name:
Cyclopentylboronic acid
CAS:
63076-51-7
MF:
C5H11BO2
Structure:
Chemical Name:
1-(3-PHENYLPROPYL)-2-THIOUREA
CAS:
93168-20-8
MF:
C10H14N2S
Structure:
Chemical Name:
(4-METHOXYBENZYL)HYDRAZINE DIHYDROCHLORIDE
CAS:
2011-48-5
MF:
C8H14Cl2N2O
Structure:
Chemical Name:
2,2,3,4,4,4-HEXAFLUORO-1-BUTANOL
CAS:
382-31-0
MF:
C4H4F6O
Structure:
Chemical Name:
3,5-DIMETHOXYPHENYLACETONITRILE
CAS:
13388-75-5
MF:
C10H11NO2
Structure:
Chemical Name:
1-Cyclopentenecarboxylic acid
CAS:
1560-11-8
MF:
C6H8O2
Structure:
Chemical Name:
(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE
CAS:
42134-49-6
MF:
C24H26BrPSi
Structure:
Chemical Name:
1,11-Undecanedicarboxylic acid
CAS:
505-52-2
MF:
C13H24O4
Structure:
Chemical Name:
(E)-2-Butenoyl chloride
CAS:
625-35-4
MF:
C4H5ClO
Structure:
Chemical Name:
6-Ethoxy-2-naphthaleneboronic acid
CAS:
352525-98-5
MF:
C12H13BO3
Structure:
Chemical Name:
1-(3-CYANOPHENYL)-2-THIOUREA
CAS:
41835-08-9
MF:
C8H7N3S
Structure:
Chemical Name:
CYCLODODECANOL
CAS:
1724-39-6
MF:
C12H24O
Structure:
Chemical Name:
1-PHENYLHEXANE
CAS:
1077-16-3
MF:
C12H18
Structure:
Chemical Name:
1,2-Bis(triethoxysilyl)ethane
CAS:
16068-37-4
MF:
C14H34O6Si2
Structure:
Chemical Name:
1-(4-Bromophenyl)ethanol
CAS:
5391-88-8
MF:
C8H9BrO
Structure:
Chemical Name:
3,5-DIBROMOBENZENEBORONIC ACID
CAS:
117695-55-3
MF:
C6H5BBr2O2
Structure:
Chemical Name:
Methyl 3-formylbenzoate
CAS:
52178-50-4
MF:
C9H8O3
Structure:
Chemical Name:
2-Methoxyphenyl isocyanate
CAS:
700-87-8
MF:
C8H7NO2
Structure:
Chemical Name:
Diethyl isopropylmalonate
CAS:
759-36-4
MF:
C10H18O4
Structure:
Chemical Name:
2-PHENYLCYCLOHEXANONE
CAS:
1444-65-1
MF:
C12H14O
Structure:
Chemical Name:
2,6-Diphenylphenol
CAS:
2432-11-3
MF:
C18H14O
Structure:
Chemical Name:
3,5-Diiodosalicylic acid
CAS:
133-91-5
MF:
C7H4I2O3
Structure:
Chemical Name:
METHYL 2-FLUOROACRYLATE
CAS:
2343-89-7
MF:
C4H5FO2
Structure:
Chemical Name:
Triisooctylamine
CAS:
25549-16-0
MF:
C24H51N
Structure:
Chemical Name:
1,3-DIOCTYL-2-THIOUREA
CAS:
34853-57-1
MF:
C17H36N2S
Structure:
Chemical Name:
4-METHYLTHIAZOLE-2-THIOL
CAS:
4498-39-9
MF:
C4H5NS2
Structure:
Chemical Name:
(PHENYLTHIO)ACETIC ACID
CAS:
103-04-8
MF:
C8H8O2S
Structure:
Chemical Name:
3-ETHYLSULFONYLPHENYLBORONIC ACID
CAS:
845870-47-5
MF:
C8H11BO4S
Structure:
Chemical Name:
1-Iodohexane
CAS:
638-45-9
MF:
C6H13I
Structure:
Chemical Name:
1-DODECYNE
CAS:
765-03-7
MF:
C12H22