天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Chemical Reagents

Chemicals reagents are commonly referred to as reagent. It is a large class of pure chemical substances with various standard purities and can be used for education, scientific research, analysis and testing as well as the functional materials and raw materials required by some kinds of novel industrial materials. There is a large variety of chemical reagents and the number has reached hundreds of thousands in the world. There are also tens of thousands of reagents that have been used in daily life in china.
There is still no uniform international rules in the classification methods for chemicals. It is customary divided by subject and actual application. Take the representative catalog issued by the Germany E • Merck Company as example, there are twelve categories and seventy categories while in most countries, it is divided with the scope of application. We divide the reagents into four categories.

1. General reagents: generally refers to inorganic reagents and organic reagents that can meet standard purity. It is often applied to scientific research, analysis and testing, and synthetic reaction and used as new materials.

2. Analysis Reagents: regent dedicated to analysis and test and can be divided into two subcategories:
(1) Reagents for chemical analysis: testing items for the chemical reaction analysis.
      1) Baseline Reagent: pure compound directly used for the standard solution in the formulation and volumetric analysis.
      2) Indicator: it can be used to indicate the end of the titration reagent and can be classified into pH indicator, redox indicator adsorption indicator, metal indicator, a fluorescent indicator, and so on.
(2) Regents for instrument analysis: high-purity compounds dedicated to instrumental analysis.
       1) Spectroscopically pure reagents: spectroscopically pure compound, often expressed in the SP for spectral analysis reagents.
        2) Chromatography pure reagents: reagents dedicated to analysis of gas chromatography and liquid chromatography analysis.
       3) Deuterated reagents: reagent decided to the analysis of the nuclear resonance instrument.

3. Reagents of electronics industry: special chemical products dedicated to electronics industry.
1)  MOS Reagents: the particle concentration is consistent with ASTM "O" level, being microelectronics dedicated reagent.
2)  high-purity reagents: also known as ultra high purity reagents such as purity of 99.99%, called 4N, 99.999% referred to 5N. They are generally used for scientific research and physical and chemical trace analysis, fiber-optic communications, microelectronics, semiconductors, lasers and so on.
3)  In addition, there are also optically pure reagents, photoresist and other kinds of fine chemical products of special properties.

4. Biochemical reagents: they are basic chemical substances extracted from living organisms or chemically synthesized and is a large type of reagent as important reagents for biological component research and analysis and identification including clinical immunology reagents, genetic engineering reagent, cell culture reagents, hormone-type substances, reagent for poison carcinogenic research and reagent for anti-mold and insecticide research. In short, they are reagents for scientific research such as exploring the mysteries of life and disease prevention as well as testing agents, being pure compound related to medicine and pharmacology.

Click on the specific product, view the latest prices of the products, information, serving information
Structure Chemical Name CAS MF
1-Phenyl-1-cyclopropanecarboxylic acid 1-Phenyl-1-cyclopropanecarboxylic acid 6120-95-2 C10H10O2
1,2-DIMETHYL-1,1,2,2-TETRAPHENYLDISILANE 1,2-DIMETHYL-1,1,2,2-TETRAPHENYLDISILANE 1172-76-5 C26H26Si2
N-Methyl-bis(trifluoroacetamide) N-Methyl-bis(trifluoroacetamide) 685-27-8 C5H3F6NO2
Bis(2-methoxyethyl) phthalate Bis(2-methoxyethyl) phthalate 117-82-8 C14H18O6
2,4'-Dichlorobenzophenone 2,4'-Dichlorobenzophenone 85-29-0 C13H8Cl2O
PIPERAZINE-1-CARBOXAMIDINE PIPERAZINE-1-CARBOXAMIDINE 45695-84-9 C5H12N4
3,5-Dimethoxytoluene 3,5-Dimethoxytoluene 4179-19-5 C9H12O2
3-IODOBENZYL ALCOHOL 3-IODOBENZYL ALCOHOL 57455-06-8 C7H7IO
Heptyl p-Toluenesulfonate Heptyl p-Toluenesulfonate 24767-82-6 C14H22O3S
Phenoxyacetyl chloride Phenoxyacetyl chloride 701-99-5 C8H7ClO2
DESYL CHLORIDE DESYL CHLORIDE 447-31-4 C14H11ClO
ETHYL 4-ACETYLBENZOATE ETHYL 4-ACETYLBENZOATE 38430-55-6 C11H12O3
PHENYLTRIMETHYLSILANE PHENYLTRIMETHYLSILANE 768-32-1 C9H14Si
4-BROMOPHENYL ISOCYANATE 4-BROMOPHENYL ISOCYANATE 2493-02-9 C7H4BrNO
TRIMETHYLSILYL METHACRYLATE TRIMETHYLSILYL METHACRYLATE 13688-56-7 C7H14O2Si
HYDROXYETHYL BETA-CYCLODEXTRIN HYDROXYETHYL BETA-CYCLODEXTRIN 128446-32-2 C56H98O42
6-(DIBUTYLAMINO)-1,3,5-TRIAZINE-2,4-DITHIOL 6-(DIBUTYLAMINO)-1,3,5-TRIAZINE-2,4-DITHIOL 29529-99-5 C11H20N4S2
4-N-HEPTYLBENZOIC ACID 4-N-HEPTYLBENZOIC ACID 38350-87-7 C14H20O2
ETHYL 3,5-DICHLORO-4-HYDROXYBENZOATE ETHYL 3,5-DICHLORO-4-HYDROXYBENZOATE 17302-82-8 C9H8Cl2O3
Sodium 1-propanesulfonate Sodium 1-propanesulfonate 14533-63-2 C3H9NaO3S
P-TOLYLTRIMETHOXYSILANE P-TOLYLTRIMETHOXYSILANE 17873-01-7 C10H16O3Si
2,2,3,3-Tetrafluoropropyl methacrylate 2,2,3,3-Tetrafluoropropyl methacrylate 45102-52-1 C7H8F4O2
(1,3-Dioxolan-2-ylmethyl)triphenylphosphonium bromide (1,3-Dioxolan-2-ylmethyl)triphenylphosphonium bromide 52509-14-5 C22H22BrO2P
Methyl phenoxyacetate Methyl phenoxyacetate 2065-23-8 C9H10O3
1-BUTOXY-2-PROPANOL 1-BUTOXY-2-PROPANOL 5131-66-8 C7H16O2
BENZOIN ISOPROPYL ETHER BENZOIN ISOPROPYL ETHER 6652-28-4 C17H18O2
Tris(2-aminoethyl)amine Tris(2-aminoethyl)amine 4097-89-6 C6H18N4
N,N'-Diisopropylethylenediamine N,N'-Diisopropylethylenediamine 4013-94-9 C8H20N2
1-BROMO-2,4-DINITROBENZENE 1-BROMO-2,4-DINITROBENZENE 584-48-5 C6H3BrN2O4
1,2-Decanediol 1,2-Decanediol 1119-86-4 C10H22O2
4-Octyloxyphenol 4-Octyloxyphenol 3780-50-5 C14H22O2
4'-Isopropylacetophenone 4'-Isopropylacetophenone 645-13-6 C11H14O
METHYL (4-HYDROXYMETHYL)BENZOATE METHYL (4-HYDROXYMETHYL)BENZOATE 6908-41-4 C9H10O3
5-BROMO-2-METHYL-NICOTINIC ACID ETHYL ESTER 5-BROMO-2-METHYL-NICOTINIC ACID ETHYL ESTER 129477-21-0 C9H10BrNO2
Ethoxydimethylvinylsilane Ethoxydimethylvinylsilane 5356-83-2 C6H14OSi
N-(4-Cyanophenyl)guanidine hydrochloride N-(4-Cyanophenyl)guanidine hydrochloride 373690-68-7 C8H8N4.HCl
Methyl 4-(chloromethyl)benzoate Methyl 4-(chloromethyl)benzoate 34040-64-7 C9H9ClO2
6-HYDROXY-2-NAPHTHALENEBORONIC ACID 6-HYDROXY-2-NAPHTHALENEBORONIC ACID 173194-95-1 C10H9BO3
(Carbomethoxymethyl)triphenylphosphonium bromide (Carbomethoxymethyl)triphenylphosphonium bromide 1779-58-4 C21H20BrO2P
4-Benzyloxyphenylhydrazine hydrochloride 4-Benzyloxyphenylhydrazine hydrochloride 52068-30-1 C13H15ClN2O
2-Methyl-1H-imidazole-4-carbaldehyde 2-Methyl-1H-imidazole-4-carbaldehyde 35034-22-1 C5H6N2O
Cycloheptanol Cycloheptanol 502-41-0 C7H14O
ISOVALERIC ANHYDRIDE ISOVALERIC ANHYDRIDE 1468-39-9 C10H18O3
3-Chloropropyl isocyanate 3-Chloropropyl isocyanate 13010-19-0 C4H6ClNO
METHANESULFONIC ACID CALCIUM SALT METHANESULFONIC ACID CALCIUM SALT 58131-47-8 C2H6CaO6S2
1-Ethyl-3-methylimidazolium tetrafluoroborate 1-Ethyl-3-methylimidazolium tetrafluoroborate 143314-16-3 C6H11BF4N2
N-BUTYLDIMETHYLSILANE N-BUTYLDIMETHYLSILANE 1001-52-1 C6H16Si
4-HYDROXYBENZENESULFONIC ACID SODIUM SALT DIHYDRATE 4-HYDROXYBENZENESULFONIC ACID SODIUM SALT DIHYDRATE 10580-19-5 C6H9NaO6S
2-CHLOROETHYLMETHYLDIMETHOXYSILANE 2-CHLOROETHYLMETHYLDIMETHOXYSILANE 13508-51-5 C5H13ClO2Si
ISOPROPYL METHYL SULFONE ISOPROPYL METHYL SULFONE 4853-74-1 C4H10O2S
N-Methylbenzamide N-Methylbenzamide 613-93-4 C8H9NO
Methyl 4,5-dimethoxy-3-hydroxybenzoate Methyl 4,5-dimethoxy-3-hydroxybenzoate 83011-43-2 C10H12O5
2-Oxetanone 2-Oxetanone 57-57-8 C3H4O2
Cholesteryl oleyl carbonate Cholesteryl oleyl carbonate 17110-51-9 C46H80O3
N,N-Dimethyl-1-naphthylamine N,N-Dimethyl-1-naphthylamine 86-56-6 C12H13N
N,N'-Diphenylguanidine monohydrobromide N,N'-Diphenylguanidine monohydrobromide 93982-96-8 C13H14BrN3
4-(4-METHYLPHENYL)-3-THIOSEMICARBAZIDE 4-(4-METHYLPHENYL)-3-THIOSEMICARBAZIDE 13278-67-6 C8H11N3S
3,5-Di-tert-butyl-4-hydroxybenzyl alcohol 3,5-Di-tert-butyl-4-hydroxybenzyl alcohol 88-26-6 C15H24O2
[1,2,4]TRIAZOLO[4,3-A]PYRIDINE-3-THIOL [1,2,4]TRIAZOLO[4,3-A]PYRIDINE-3-THIOL 6952-68-7 C6H5N3S
2-IODO-2-METHYLPROPANE 2-IODO-2-METHYLPROPANE 558-17-8 C4H9I
4-CHLOROBENZOYLACETONITRILE 4-CHLOROBENZOYLACETONITRILE 4640-66-8 C9H6ClNO
METHYL PHENYLPROPIOLATE METHYL PHENYLPROPIOLATE 4891-38-7 C10H8O2
HEXANAMIDE HEXANAMIDE 628-02-4 C6H13NO
Dibenzyl diselenide Dibenzyl diselenide 1482-82-2 C14H14Se2
PHENETHYLMETHYLDICHLOROSILANE PHENETHYLMETHYLDICHLOROSILANE 772-65-6 C9H12Cl2Si
1-CHLOROETHYLTRICHLOROSILANE 1-CHLOROETHYLTRICHLOROSILANE 7787-82-8 C2H4Cl4Si
Diethyl oxalacetate Diethyl oxalacetate 108-56-5 C8H12O5
4-Fluoro-3-formylphenylboronic acid 4-Fluoro-3-formylphenylboronic acid 374538-01-9 C7H6BFO3
5-FLUORO-2-METHYLBENZENESULFONYL CHLORIDE 5-FLUORO-2-METHYLBENZENESULFONYL CHLORIDE 445-05-6 C7H6ClFO2S
M-CARBORANE M-CARBORANE 16986-24-6 C2H12B10
ALLYL ETHYL ETHER ALLYL ETHYL ETHER 557-31-3 C5H10O
3-BENZYLOXYBENZYL ALCOHOL 3-BENZYLOXYBENZYL ALCOHOL 1700-30-7 C14H14O2
P-TOLYLDIMETHYLCHLOROSILANE P-TOLYLDIMETHYLCHLOROSILANE 35239-30-6 C9H13ClSi
5-BROMOVALERONITRILE 5-BROMOVALERONITRILE 5414-21-1 C5H8BrN
OCTACOSANOIC ACID OCTACOSANOIC ACID 506-48-9 C28H56O2
S-Methyl methanethiolsulfonate S-Methyl methanethiolsulfonate 2949-92-0 C2H6O2S2
N-METHYL-N-(4-NITROBENZYL)AMINE HYDROCHLORIDE N-METHYL-N-(4-NITROBENZYL)AMINE HYDROCHLORIDE 19499-60-6 C8H10N2O2
2-[2-(2-CHLOROETHOXY)ETHOXY]ETHANOL 2-[2-(2-CHLOROETHOXY)ETHOXY]ETHANOL 5197-62-6 C6H13ClO3
1-Phenyl-1,2-ethanediol 1-Phenyl-1,2-ethanediol 93-56-1 C8H10O2
2,5-Dimethylbenzenesulfonic acid dihydrate 2,5-Dimethylbenzenesulfonic acid dihydrate 609-54-1 C8H10O3S
3-Maleimidobenzoic acid N-hydroxysuccinimide ester 3-Maleimidobenzoic acid N-hydroxysuccinimide ester 58626-38-3 C15H10N2O6
DL-2-AMINOOCTANOIC ACID DL-2-AMINOOCTANOIC ACID 644-90-6 C8H17NO2
4,4'-DIMETHOXYBENZHYDROL 4,4'-DIMETHOXYBENZHYDROL 728-87-0 C15H16O3
1,4-DICYCLOHEXYLBENZENE 1,4-DICYCLOHEXYLBENZENE 1087-02-1 C18H26
Bis(trimethoxysilylpropyl)amine Bis(trimethoxysilylpropyl)amine 82985-35-1 C12H31NO6Si2
1,2-Diformylhydrazine 1,2-Diformylhydrazine 628-36-4 C2H4N2O2
cis-Hexahydrophthalic acid cis-Hexahydrophthalic acid 610-09-3 C8H12O4
N-BROMOPHTHALIMIDE N-BROMOPHTHALIMIDE 2439-85-2 C8H4BrNO2
4-NITROBENZHYDRAZIDE 4-NITROBENZHYDRAZIDE 636-97-5 C7H7N3O3
Tetraphenylethylene Tetraphenylethylene 632-51-9 C26H20
N-Hydroxymaleimide N-Hydroxymaleimide 4814-74-8 C4H3NO3
3-Methyl-4-anisaldehyde 3-Methyl-4-anisaldehyde 32723-67-4 C9H10O2
1-HEXYL-3-METHYLIMIDAZOLIUM BROMIDE 1-HEXYL-3-METHYLIMIDAZOLIUM BROMIDE 85100-78-3 C10H19BrN2
N-CINNAMOYL-N-(2,3-XYLYL)HYDROXYLAMINE N-CINNAMOYL-N-(2,3-XYLYL)HYDROXYLAMINE 69891-38-9 C17H17NO2
4-Bromobenzoylacetonitrile 4-Bromobenzoylacetonitrile 4592-94-3 C9H6BrNO
4-(METHYLTHIO)THIOPHENOL 4-(METHYLTHIO)THIOPHENOL 1122-97-0 C7H8S2
3,3'-IMINODIPROPIONITRILE 3,3'-IMINODIPROPIONITRILE 111-94-4 C6H9N3
PHENYLMETHYLVINYLCHLOROSILANE PHENYLMETHYLVINYLCHLOROSILANE 17306-05-7 C9H11ClSi
CYCLOPROPYLTRIPHENYLPHOSPHONIUM BROMIDE CYCLOPROPYLTRIPHENYLPHOSPHONIUM BROMIDE 14114-05-7 C21H20BrP
3-BROMOPHENACYL BROMIDE 3-BROMOPHENACYL BROMIDE 18523-22-3 C8H6Br2O
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.