一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

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-ETHYL-2,3-DIMETHYLIMIDAZOLIUM BROMIDE 1-ETHYL-2,3-DIMETHYLIMIDAZOLIUM BROMIDE 98892-76-3 C7H13BrN2
DECAHYDRONAPHTHALENE-D18 DECAHYDRONAPHTHALENE-D18 28788-42-3 C10D18
N-Methyl-N-vinylacetamide N-Methyl-N-vinylacetamide 3195-78-6 C5H9NO
FENAMIPHOS SULFOXIDE FENAMIPHOS SULFOXIDE 31972-43-7 C13H22NO4PS
1,5-HEXADIENE DIEPOXIDE 1,5-HEXADIENE DIEPOXIDE 1888-89-7 C6H10O2
1-METHYLPYRENE 1-METHYLPYRENE 2381-21-7 C17H12
Fluorene-9-acetic acid Fluorene-9-acetic acid 6284-80-6 C15H12O2
TRI-N-PROPYLCHLOROSILANE TRI-N-PROPYLCHLOROSILANE 995-25-5 C9H21ClSi
1-NAPHTHYL PROPIONATE 1-NAPHTHYL PROPIONATE 3121-71-9 C13H12O2
1-CYCLOHEXYL-3-(2-MORPHOLINOETHYL)THIOUREA 1-CYCLOHEXYL-3-(2-MORPHOLINOETHYL)THIOUREA 21545-54-0 C13H25N3OS
5-(2-METHOXYPHENYL)-1,3,4-OXADIAZOLE-2-THIOL 5-(2-METHOXYPHENYL)-1,3,4-OXADIAZOLE-2-THIOL 69844-25-3 C9H8N2O2S
N-BUTYLSILANE N-BUTYLSILANE 1600-29-9 C4H12Si
4-TERT-BUTYLPHENYLACETIC ACID 4-TERT-BUTYLPHENYLACETIC ACID 32857-63-9 C12H16O2
3-PHENYL-1,1,1-TRIFLUOROPROPAN-2-ONE 3-PHENYL-1,1,1-TRIFLUOROPROPAN-2-ONE 350-92-5 C9H7F3O
2-NAPHTHYL MYRISTATE 2-NAPHTHYL MYRISTATE 7262-80-8 C24H34O2
5-CHLORO-2-METHYLPHENYL ISOCYANATE 5-CHLORO-2-METHYLPHENYL ISOCYANATE 40411-27-6 C8H6ClNO
PROPIONALDEHYDE 2,4-DINITROPHENYLHYDRAZONE PROPIONALDEHYDE 2,4-DINITROPHENYLHYDRAZONE 725-00-8 C9H10N4O4
POTASSIUM SELENATE POTASSIUM SELENATE 7790-59-2 H3KO4Se
(4-NITROBENZYL)TRIPHENYLPHOSPHONIUM BROMIDE (4-NITROBENZYL)TRIPHENYLPHOSPHONIUM BROMIDE 2767-70-6 C25H21NO2P.Br
NAPHTHOL YELLOW S NAPHTHOL YELLOW S 846-70-8 C10H4N2Na2O8S
3-CHLORO-2-METHYLBENZONITRILE 3-CHLORO-2-METHYLBENZONITRILE 54454-12-5 C8H6ClN
2,2,5,5-TETRAMETHYL-2,5-DISILA-1-OXACYCLOPENTANE 2,2,5,5-TETRAMETHYL-2,5-DISILA-1-OXACYCLOPENTANE 7418-20-4 C6H16OSi2
4-N-HEXYLOXYBENZALDEHYDE 4-N-HEXYLOXYBENZALDEHYDE 5736-94-7 C13H18O2
2,6-DIMETHOXYTOLUENE 2,6-DIMETHOXYTOLUENE 5673-07-4 C9H12O2
DEUTERIUM BROMIDE DEUTERIUM BROMIDE 13536-59-9 BrD
2-(4-METHOXYPHENYL)HYDRAZINESULFONIC ACID SODIUM SALT MONOHYDRATE 2-(4-METHOXYPHENYL)HYDRAZINESULFONIC ACID SODIUM SALT MONOHYDRATE 5446-07-1 C7H9N2NaO4S
DIMETHYL CIS-1,2-CYCLOPROPANEDICARBOXYLATE DIMETHYL CIS-1,2-CYCLOPROPANEDICARBOXYLATE 826-34-6 C7H10O4
3-METHYLENE-2-NORBORNANONE 3-METHYLENE-2-NORBORNANONE 5597-27-3 C8H10O
2,5-Dibromohexane 2,5-Dibromohexane 24774-58-1 C6H12Br2
PHENOXATHIIN-4-BORONIC ACID PHENOXATHIIN-4-BORONIC ACID 100124-07-0 C12H9BO3S
GLYCIDYL ISOPROPYL ETHER GLYCIDYL ISOPROPYL ETHER 4016-14-2 C6H12O2
TETRAMETHYLAMMONIUM HEXAFLUOROPHOSPHATE TETRAMETHYLAMMONIUM HEXAFLUOROPHOSPHATE 558-32-7 C4H12F6NP
CROTONALDEHYDE (DNPH DERIVATIVE) CROTONALDEHYDE (DNPH DERIVATIVE) 1527-96-4 C10H10N4O4
3,5-DICHLORO-2-HYDROXYBENZENESULFONYL CHLORIDE 3,5-DICHLORO-2-HYDROXYBENZENESULFONYL CHLORIDE 23378-88-3 C6H3Cl3O3S
2,3-DIMETHYL-6-NITROANILINE 2,3-DIMETHYL-6-NITROANILINE 59146-96-2 C8H10N2O2
(R)-(+)-TolBINAP (R)-(+)-TolBINAP 99646-28-3 C48H40P2
3-FLUORO-4-HYDROXYPHENYLACETIC ACID 3-FLUORO-4-HYDROXYPHENYLACETIC ACID 458-09-3 C8H7FO3
NONENYLSUCCINIC ANHYDRIDE NONENYLSUCCINIC ANHYDRIDE 28928-97-4 C13H20O3
SODIUM XYLENESULFONATE SODIUM XYLENESULFONATE 30587-85-0 C8H9NaO3S
METHOXY-BIS(DIMETHYLAMINO)METHANE METHOXY-BIS(DIMETHYLAMINO)METHANE 1186-70-5 C6H16N2O
1-CYCLOPENTENYLACETONITRILE 1-CYCLOPENTENYLACETONITRILE 22734-04-9 C7H9N
DIBROMOACETONITRILE DIBROMOACETONITRILE 3252-43-5 C2HBr2N
1-Propanesulfonic acid 1-Propanesulfonic acid 5284-66-2 C3H8O3S
(-)-B-METHOXYDIISOPINOCAMPHEYLBORANE (-)-B-METHOXYDIISOPINOCAMPHEYLBORANE 99438-28-5 C21H37BO
ARACHIDIC ANHYDRIDE ARACHIDIC ANHYDRIDE 55726-22-2 C40H78O3
4-(Trifluoromethylthio)benzyl alcohol 4-(Trifluoromethylthio)benzyl alcohol 56456-52-1 C8H7F3OS
3-(N-Styrylmethyl-2-aminoethylamino)-propyltrimethoxysilane hydrochloride 3-(N-Styrylmethyl-2-aminoethylamino)-propyltrimethoxysilane hydrochloride 34937-00-3 C17H31ClN2O3Si
3-HEXYNE 3-HEXYNE 928-49-4 C6H10
Hexachlorodisilane Hexachlorodisilane 13465-77-5 Cl6Si2
2,2,3,3-TETRAFLUORO-1,4-BUTANEDIOL 2,2,3,3-TETRAFLUORO-1,4-BUTANEDIOL 425-61-6 C4H6F4O2
4,4-DIMETHYL-3-THIOSEMICARBAZIDE 4,4-DIMETHYL-3-THIOSEMICARBAZIDE 6926-58-5 C3H9N3S
4-Nitrobiphenyl 4-Nitrobiphenyl 92-93-3 C12H9NO2
Methanedisulfonic acid dipotassium salt Methanedisulfonic acid dipotassium salt 6291-65-2 CH5KO6S2
2,7-DIMETHYLNAPHTHALENE 2,7-DIMETHYLNAPHTHALENE 582-16-1 C12H12
N-TRIDECYLBENZENE N-TRIDECYLBENZENE 123-02-4 C19H32
2,4-HEXADIYNE-1,6-DIOL 2,4-HEXADIYNE-1,6-DIOL 3031-68-3 C6H6O2
4-CARBOXYBENZENESULFONYL AZIDE 4-CARBOXYBENZENESULFONYL AZIDE 17202-49-2 C7H5N3O4S
2-BROMOHEXANE 2-BROMOHEXANE 3377-86-4 C6H13Br
BORON TRIFLUORIDE, N-PROPANOL REAGENT 15 BORON TRIFLUORIDE, N-PROPANOL REAGENT 15 762-48-1 C3H7BF3O
3-HEXADECANONE 3-HEXADECANONE 18787-64-9 C16H32O
1-HEPTANESULFONIC ACID SODIUM SALT MONOHYDRATE 1-HEPTANESULFONIC ACID SODIUM SALT MONOHYDRATE 207300-90-1 C7H17NaO4S
6-(1,4-DIAZEPAN-1-YL)NICOTINONITRILE 6-(1,4-DIAZEPAN-1-YL)NICOTINONITRILE 683274-59-1 C11H14N4
4-Amino-3,5-diiodobenzoic acid 4-Amino-3,5-diiodobenzoic acid 2122-61-4 C7H5I2NO2
TRIMETHYLSILYL CROTONATE TRIMETHYLSILYL CROTONATE 18269-64-2 C7H14O2Si
DIETHYL (CHLOROMETHYL)PHOSPHONATE DIETHYL (CHLOROMETHYL)PHOSPHONATE 3167-63-3 C5H12ClO3P
6-O-(TRIISOPROPYLSILYL)-D-GLUCAL 6-O-(TRIISOPROPYLSILYL)-D-GLUCAL 137915-37-8 C15H30O4Si
1H,1H,7H-DODECAFLUORO-1-HEPTANOL 1H,1H,7H-DODECAFLUORO-1-HEPTANOL 335-99-9 C7H4F12O
DL-2-Methylbutyryl chloride DL-2-Methylbutyryl chloride 57526-28-0 C5H9ClO
2-PROPANOL-D8 2-PROPANOL-D8 22739-76-0 C3D8O
DI-P-TOLYLDICHLOROSILANE DI-P-TOLYLDICHLOROSILANE 18414-38-5 C14H14Cl2Si
Sodium 1-hexanesulfonate monohydrate Sodium 1-hexanesulfonate monohydrate 207300-91-2 C6H17NaO4S
S-ETHYL TRIFLUOROTHIOACETATE S-ETHYL TRIFLUOROTHIOACETATE 383-64-2 C4H5F3OS
N-METHYL-AZA-2,2,4-TRIMETHYLSILACYCLOPENTANE N-METHYL-AZA-2,2,4-TRIMETHYLSILACYCLOPENTANE 18387-19-4 C7H17NSi
DIPHENYLENEIODONIUM CHLORIDE DIPHENYLENEIODONIUM CHLORIDE 4673-26-1 C12H8ClI
Diethyl amino methyl triethoxy silane Diethyl amino methyl triethoxy silane 15180-47-9 C11H27NO3Si
VINYL BENZOATE VINYL BENZOATE 769-78-8 C9H8O2
2-(4-HYDROXYPHENYL)PROPIONIC ACID 2-(4-HYDROXYPHENYL)PROPIONIC ACID 938-96-5 C9H10O3
(Chloromethyl)trichlorosilane (Chloromethyl)trichlorosilane 1558-25-4 CH2Cl4Si
NITROBENZENE-D5 NITROBENZENE-D5 4165-60-0 C6D5NO2
beta-Pinene beta-Pinene 127-91-3 C10H16
2,3,4,5,6-PENTAFLUOROANISOLE 2,3,4,5,6-PENTAFLUOROANISOLE 389-40-2 C7H3F5O
N,N'-DIBENZOYLHYDRAZINE N,N'-DIBENZOYLHYDRAZINE 787-84-8 C14H12N2O2
BIS(4-HYDROXY-3-METHYLPHENYL) SULFIDE BIS(4-HYDROXY-3-METHYLPHENYL) SULFIDE 24197-34-0 C14H14O2S
1,4-DIHYDRONAPHTHALENE 1,4-DIHYDRONAPHTHALENE 612-17-9 C10H10
N-NONADECANOIC ACID ETHYL ESTER N-NONADECANOIC ACID ETHYL ESTER 18281-04-4 C21H42O2
MARGAROYL CHLORIDE MARGAROYL CHLORIDE 40480-10-2 C17H33ClO
3-Methylcyclopentanone 3-Methylcyclopentanone 1757-42-2 C6H10O
ETHYL TRANS-2-DECENOATE ETHYL TRANS-2-DECENOATE 7367-88-6 C12H22O2
(Dichloromethylene)dimethylammonium chloride (Dichloromethylene)dimethylammonium chloride 33842-02-3 C3H6Cl2N.Cl
3,5-DI-TERT-BUTYLTOLUENE 3,5-DI-TERT-BUTYLTOLUENE 15181-11-0 C15H24
CYCLOHEXYLTRIMETHOXYSILANE CYCLOHEXYLTRIMETHOXYSILANE 17865-54-2 C9H20O3Si
DIMETHYL PIMELIMIDATE DIHYDROCHLORIDE DIMETHYL PIMELIMIDATE DIHYDROCHLORIDE 58537-94-3 C9H19ClN2O2
CI 52000 CI 52000 78338-22-4 C14H13N3O2S
Bromonitromethane Bromonitromethane 563-70-2 CH2BrNO2
HYDROXYPROPYL-GAMMA-CYCLODEXTRIN HYDROXYPROPYL-GAMMA-CYCLODEXTRIN 99241-25-5 C72H128O48
1,1,1,3,3,3-HEXAFLUOROISOPROPYL METHACRYLATE 1,1,1,3,3,3-HEXAFLUOROISOPROPYL METHACRYLATE 3063-94-3 C7H6F6O2
TRANS-4-DIMETHYLAMINOCINNAMONITRILE TRANS-4-DIMETHYLAMINOCINNAMONITRILE 32444-63-6 C11H12N2
4-PHENOXYPHENYL ISOCYANATE 4-PHENOXYPHENYL ISOCYANATE 59377-19-4 C13H9NO2
2-Iodo-4-methoxy-1-nitrobenzene 2-Iodo-4-methoxy-1-nitrobenzene 214279-40-0 C7H6INO3
Tetraethylammonium hydrogensulfate Tetraethylammonium hydrogensulfate 16873-13-5 C8H21NO4S
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
宣化县| 苏州市| 八宿县| 黔西县| 波密县| 保靖县| 岳西县| 柳河县| 灌云县| 宁国市| 岳阳县| 罗平县| 驻马店市| 蓝山县| 万源市| 同德县| 德安县| 靖安县| 永嘉县| 凤阳县| 故城县| 兴城市| 新野县| 嘉义县| 张家口市| 阿拉善右旗| 藁城市| 泸西县| 尖扎县| 武穴市| 乐业县| 泸溪县| 苏尼特左旗| 陈巴尔虎旗| 烟台市| 尼木县| 德保县| 台南市| 高台县| 红原县| 邯郸县|