无码日韩精品一区二区免费暖暖_日韩人妻无码精品久久_狂躁美女大bbbbbb视频u_亚洲精品一区二区三区在线观看_自拍偷自拍亚洲精品播放

<input id="7g8o4"><pre id="7g8o4"><style id="7g8o4"></style></pre></input>

SZSE：002741

ABOUT US

Industrial Layout

Industry Service

Investor Relations

Contact Us

Chemical Reagents

Home > Chemical Reagents

Humic acid?COA Report

CAS No.：1415-93-6
Molecular weight：227.17
Molecular formula：C₉H₉NO₆
EC No.：215-809-6

Information

Specification category：

Product No.	Product name	specifications
1.14130.010	Humic acid	BR100g

Related Products

Ammonium oxalate?monohydrate

Silica gel self indicator

Sulfuric acid 68%

Magnesium oxide (light)

Sodium phosphomolybdate?

Silver sulfate?

Cobalt(II) chloride hexahydrate

GN enrichment broth

Zirconium dioxide?

Sodium permanganate solution 40%

Ammonia solution

Copper(II) sulfate?solution

Sodium hydrogen sulfate anhydrous

Potassium iodide

Potassium carbonate anhydrous

p-Toluenesulfonic acid monohydrate

Nitric acid?56-57%

Antimony trichloride?

Dimethylammonium chloride

Sodium L-glutamate?

Hydrazinium hydroxide?40%

Copper(II) oxide powder?

Fluoroboric acid

2-Hydroxybenzaldehyde

Basic fuchsine (C.I.42510)

N,N-Diethyl-1,4-phenylenediammonium sulfate

Cetyltrimethylammonium bromide?

Methanol absolute

Petroleum ether 30-60

Potassium borohydride

Benzoyl peroxide

1,6-Diamino-hexane

Sodium bromide?

Ethylene glycol monoethyl ether?

Copper(II) bromide?

DL-Aspartic acid

Ethylenediaminetetraacetic acid calcium disodium salt

alpha-Cyclodextrin

Tetraethylene pentamine

Chloroacetic acid

Calcium hydrogen phosphate?dihydrate

2,2'-Bipyridine

Aluminum potassium sulfate?dodecahydrate

p-Toluenesulfonyl chloride?

N-(1-Naphthyl)ethylenediamine dihydrochloride

Methyl orange (C.I.13025)

Ammonium benzoate

Sodium?formate anhydrous

Potassium fluosilicate?

Aluminum powder 100-200?

Potassium fluoborate?

Manganese(II) carbonate?

Ammonium hydrogen carbonate

Potassium chloride?

Octadecanoic acid

Tetrachloroethylene?

Alizarin red?(C.I.58005)

tetra-Sodium diphosphate?decahydrate

Polyethylene glycol 6000?

Methyl methacrylate

Sodium hydrogen sulfate?monohydrate

Lithium fluoride

Chromium(VI) oxide?

Potassium chromate?

Agar rose bengal

Chloroplatinic acid?

Eriochrome blue black R (C.I.15705)

Niobium pentaoxide?

Chlorophosphonazo I?

Hydrochloric acid?24-26%

Calcium acetate?

Bismuth nitrate?pentahydrate

Sodium molybdate?dihydrate

Cadmium chloride?

Pararosaniline chloride

Merthiolate sodium

Sodium malonate?

Copper(I) oxide

Ethylenediamine tetraacetic acid tetrasodium salt anhydros

Hydrazinium hydroxide?35%

Potassium carbonate crystal

Lead(Ⅱ) carbonate basic

Sodium salicylate

Aluminum powder?

Ethylenediammonium dichloride

Diisopropylamine?

Diethyl oxalate

1,1,1-Trichloroethane?

Paraformaldehyde?

N-Chlorosuccinimide

Ethylene glycol?65%

Sodium 1-heptanesulfonate?

Silicone oil H201-350

Potassium stannate trihydrate

Sodium hydroxide?solution 25%

Magnesium acetate?tetrahydrate

Barium chloride?dihydrate

Indium granular

Diethylene glycol monobutyl ether?

2-Thiobarbituric acid?

Hydrazinium hydroxide 55%

Molybdenum disulfide

Phenylhydrazine

Nitric acid?69-71%

N,N-Dimethylaniline

Nickel(II) sulfate?hexahydrate

Martin medium modified

Kligler iron agar?

Nickel(II) carbonate basic tetrahydrate

Potassium thiocyanate?

Potassium bromide?

Formaldehyde solution?28%

iso-Propanol?99.9%

Polyethylene glycol 600?

N,N-Dimethyl-1,4-phenylenediammonium dichloride

Potassium peroxodisulfate

Cobalt(III) oxide

Copper(II) oxide wire

Tetraethylammonium bromide?

Lead(Ⅱ) sulfate

Potassium iodate?

1-Dodecanethiol?

Magnesium sulfate anhydrous?

Manganese(II) acetate?tetrahydrate

Dimethyl sulfoxide

Ethylene glycol-bis-(2-aminoethylether)-N,N,N′,N′-tetraacetic acid

Polyethylene glycol 2000?

Dodecanoic acid；Lauric acid

Cerium(III) nitrate hexahydrate?

Sodium nitrite?

Benzyl chloride?

Nitrilotriacetic acid

Calcium carbonate?

Copper(II) sulfate?pentahydrate

Benzoyl hydrazine

Sodium thiosulfate standard volumetic solution

Sodium acetate?trihydrate

Diethylene glycol?

Graphite powder

Polyethylene-polyamines

Ethylenediaminetetraacetic acid magnesium disodium salt

5% Benzalkonium bromide solution

Trimethylammonium

Hydrazinium hydroxide 50%

1-Bromonaphthalene?

Bismuth citrate

Sodium benzenesulfinate

Choline chloride

Sodium m-nitrobenzenesulfonate?

Phosphotungstic acid?

Sodium hydrogen phthalate?

Dibutyl o-phthalate?

4-Methylpyridine

Ethylene glycol?30%

Copper(II) sulfate anhydrous?

Strontium chloride?hexahydrate

Methylammonium chloride

2-Aminothiazole

Aluminum oxide?

Bismuth granular?

Sodium nitroferricyanide?dihydrate

Trimethylchlorosilane?

Zinc phosphate?tetrahydrate

Triiodomethane?

Calcium nitrate?

Aluminum sheet?

Manganese(II) chloride tetrahydrate?

Sodium hydrogen sulfite?

Sodium?perborate tetrahydrate

Potassium dichromate standard volumetic solution

Sodium sulfosalicylate?

Chloramine T trihydrate

Silver nitrate?

Nickel(II) sulfamate solution

Phosphorus(V) oxide

Aluminum chloride anhydrous?

Lead(Ⅱ) acetate trihydrate

Sodium 1-hexanesulfonate?

N,N-Dimethylacetamide

Potassium tetraoxalate dihydrate

Ammonium phosphate?

Peroxyacetic acid

Hydrazinium hydroxide?80%

Polyvinyl alcohol ammonium phosphate?

Safranine T (C.I.50240)

3,3'-Dimethyldiphenylamine

Ammonium metavanadate?

Indole-3-acetic acid?

Sodium cobaltinitrite?

Calcon carboxylic acid

Ammonium persulfate?

Ethylenediamine tetraacetic acid dipotassium?salt hexadrate

Lead(Ⅱ) chromate

Nutrient broth?

Iron(III) chloride?hexahydrate

Lead(Ⅱ) carbonate

Cellulase Onozuka R-10

Tetramethylammonium hydroxide

m-Chloroaniline

Lithium acetate?dihydrate

Potassium sodium citrate monohydrate

o-Cresolphtalein complexon

p-Nitrotoluene?

6-Amino caproic acid

Hydrogen peroxide 50%

Copper(I) iodide?

Dimethyl yellow (C.I.11020)

Maltose?monohydrate

Strontium nitrate?

Semixylenol orange

Ethanol absolute

Acetic acid glacial?

Magnesium citrate tetradecahydrate

Polyethylene glycol 20000?

Sodium tripolyphosphate / Sodium triphosphate

Ammonium molybdate?tetrahydrate

Diisopropyl ether?

Tin(II) chloride?dihydrate

1,2-Dibromoethane?

N-Methylmorpholine

Hydrochloric acid?18%

Sodium succinate?hexahydrate

Sodium lactate?

Glutaraldehyde 25%

Ethylenediamine tetraacetic acid tetrasodium solution

Formaldehyde solution?30%

Thiosemicarbazide

Eosin Y (alcohol soluble)? (C.I.45380.2)

Aluminum?chloride basic solution 50%

Titanium trichloride solution

Potassium hydrogen tartrate

Fluosilicic acid?

Nigrosine ( spirit soluble)

Methyl blue (C.I.42780)

Ethylenediamine tetraacetic acid disodium salt standard volumetic solution

Benzoyl chloride?

Disodium hydrogen phosphate anhydrous?

Cadmium sulfate?octahydrate

Iron(II) sulfate?heptahydrate

Ethylene glycol dimethyl ether?

calcium phosphate

Dichloromethane?

Titanium dioxide?

Ethylenediamine

Polyethylene glycol 200

Hydrochloric acid?

Ponceau S (C.I. 27195)

Barium carbonate?

Sodium dodecylsulfate?

Petroleum ether 90-120

tert-Butyl methyl ether

Sodium D-gluconate

1,2,3,4-Tetrahydronaphthalene?

Phosphorus red?

Iron standard solution for impurity

Sodium chloride?

Sodium acetate anhydrous?

Ammonium thiocyanate?

Sulfuric acid?50%

Sodium borohydride

Trichloroethylene?

Hydrofluoric acid?

Acetic acid 36%?

Ethyl acetoacetate?

Zinc standard solution for impurity

Salicylic acid?

Ethylenediamine tetraacetic acid disodium salt

Indigo carmine (C.I. 73015)

Cupric Pyrophosphate

Iron(II) sulfide

Bromophenol blue

Potassium hydroxide?48%

tri-Potassium phosphate?trihydrate

Silver diethyldithiocarbamate

Cerium(IV) oxide?

Alikali blue 6B (C.I.46725)

L-Cysteine hydrochloride anhydrous

Barium chromate?

L-Histidine hydrochloride

Sodium tetraphenyl boron?

Hydrochloric acid 33%

Trifluoroacetic acid?

Polyphosphoric acid

Methyl 4-hydroxybenzoate

Titan yellow (C.I.19540)

Sodium periodate?

Molybdenum trioxide?

Cobalt(II) sulfate?heptahydrate

1,10-Phenanthroline

Sodium hexametaphosphate

Sodium hydroxide?solution 50%

Potassium dichromate

Methyl violet?(C.I.42535) Crystal Violet

Zirconium hydroxide?

Hydrogen peroxide 35%

Ammonium bromide

Peroxyacetic acid

Dimethyl o-phthalate?

Nickel ammonium sulfate hexahydrate

Sodium stannate?trihydrate

Sodium thiocyanate?

4-(Dimethylamino)benzaldehyde

Tetrabutyl titanate?

Propyl 4-hydroxybenzoate?

Polyvinyl alcohol

Sodium hydroxide

Lanthanum oxide?

Hydrochloric acid?20%

1,2-Propanediol

0.5% Dextrose broth?

Chromotropic acid disodium salt

Hexamethyldisilazane

Trisodium citrate?dihydrate

Manganese(II) sulfate?monohydrate

Tetrahydrofuran

Strontium carbonate?

Tin(II) chloride

Ammonium chloride?

Potassium periodate

Tetrahydrofurfuryl alcohol?

Benzenesulfonyl chloride?

Lead standard solution for impurity

Peroxyacetic acid

Sodium fluoride

Potassium iodate standard volumetic solution

Sodium dihydrogen phosphate anhydrous?

Silicon dioxide?

Methylthymol blue

Potassium phosphate tribasic anhdrous

Sulfuric acid?standard solution 0.1%

Potassium hydrogen oxalate

Methyl acetate?

Peptone, fish powder

Ammonium sulfamate?

Magnesium nitrate?hexahydrate

Lead(Ⅱ) chloride

Formaldehyde solution?22.8%

?Amido black 10B

2,6-Di-tert-butyl-4-methylphenol

5-(4-Dimethylaminobenzylidene)-rhodanine

Na-Benzoyl-L-arginine ethyl ester hydrochloride

5-Sulfosalicylic acid dihydrate

1,2-Dichlomoethane?

Calcium chloride anhydrous?

Hexamethylenetetramine

Barium peroxide

Methylamine alcohol solution?

Polyvinyl alcohol

Copper(II) formate hydrate

1-Naphthylamine

Lead(Ⅱ,Ⅳ) oxide red

tri-Potassium citrate monohydrate

Calcium chloride dihydrate?

N-Ethylmaleimide

Potassium nitrate?

Nitric acid fuming?

Manganese dioxide?

Lactose bile fermentation medium

Zinc acetate dihydrate

Dimethylamine water solution

Phthalic anhydride?

Sodium chromate(VI) anhydrous

Potassium hydrogen carbonate

8-Hydroxyquinoline

Borax buffer solution

Barium stearate?

Sodium benzoate?

Ethylenedinitrilotetraacetic acid

Sodium carbonate anhydrous?

Semicarbazide hydrochloride

Sodium?hexametaphosphate

Iron(II) chloride tetrahydrate

4,4'-Diaminodiphenyl sulphone

Citric acid?monohydrate

N,N'-Methylene bisacrylamide

Potassium hydroxide

Hydrochloric acid?32%

Bismuth(III) chloride?

Bismarck brown Y (C.I.21000)

Sodium ethylate

Tris(hydroxymethyl) aminomethane?

Sodium nitrate?

Nitroblue tetrazolium chloride

Diisobutylamine

Disodium rhodizonate?

Indigo carmine (C.I.73015)

Manganese powder?

D-Phenylalanine

Ethylenediamine tetraacetic acid tetrasodium salt dihydrate

L-Ascorbic acid

Sudan IV (C.I.26015)

Magnesium hydroxide?

Sodium?hypophosphite monohydrate

Ethylene glycol monobutyl ether?

Ammonium pyrrolidine dithiocarbamate

Ethylenediamine tetraacetic acid dipotassium?salt dihydrate

1,4-Benzoquinone?

Boron trifluoride etherate

Calcein indicator

Acid chrome blue K (C.I.16675)

3,5-dihydroxytoluene

Selenium dioxide?

Ammonium iodide?

Sodium iodide?dihydrate

1-Methyl-2-pyrrolidone?

Methyl red indicator solution for use in test methods

Sudan I (C.I.12055)

Lithium standard solution for impurity

Sulfur sublimed

Guanidine carbonate

2,4,6 - Triamino-1,3,5-triazine

Triammonium citrate

Magnesium stearate

Triethanolamine

Dibutyltin dilaurate

Propionic acid?

Petroleum ether 60-90

Sodium hydrogen tartrate?

Potassium sulfate?

Sodium sulfate anhydrous?

Ammonium iron(II) sulfate?hexahydrate

Nicotinamide adenine dinucleotide free acid

Trimethylol propane

Sodium sulfide nonahydrate

Polyethylene glycol 8000

Sodium carboxymethyl cellulose?

Germanium oxide

2-Chlorobenzoic acid?

Hexachloroethane?

Diantipyryl methane?

Brilliant Green

Trichloroacetic acid?

SodiuM cholate hydrate

Lead(Ⅱ) acetate basic

Potassium oxalate?monohydrate

OP emulsifying agent

Sodium hydroxide?solution 30%

Gentian violet??(C.I.42535 or 42555)

Malachite green?(C.I.42000）

Iron(III) nitrate?nonahydrate

Sodium diphenylamine-4-sulfonate?

Rose bengal sodium salt (C.I. 45440)

Aluminum hydroxide?

Isobuty methyl ketone

Barium acetate?

Sodium chlorate?

Hydrochloric acid 35%

Bis(cyclohexanone)- oxalyldihydrazone

Potassium fluoride dihydrate

Sodium ferrocyanide?

Tetrabutylammonium iodide?

Calcium hydroxide?

α-Naphthylacetic acid?

Benzidine dihydrochloride

Ammonium tartrate?

Silicone oil H201-500

Phosphorus acid

Iron standard solution for impurity

Barium sulfate?

Succinic anhydride

o-Cresolphthalein

Aluminum?chloride crystal

Calcium stearate?

1H-Benzotriazole

di-Magnesium trisilicate

Tribromomethane?

Sulfur precipitated

4-Aminobenzoic acid?

Ethyl methyl ketone

Ammonium aluminum sulfate?dodecahydrate

Bromothymol blue

Magnesium carbonate basic?pentahydrate

Chromium(III) sulfate solution 50%

Diphenylcarbazone

Sodium methylate

Bromocresol green solution 0.4%

Indole-3-butyric acid

Copper(II) hydroxide?

Gold chloride / Chloroauric acid hydrated

Aluminum nitrate nonahydrate

?2-hydroxy-3,5-dinitro-Benzoic acid

Potassium hydroxide?45%

Diethylene glycol monomethyl ether?

Diacetyl monoxime

Sodium dodecylsulfonate?

N,N-Dimethylbenzylamine

Ammonium cerium(IV) sulfate?

Magnesium chloride?hexahydrate

Silicotungstic acid?

Sodium sulfate decahydrate

trans-Cinnamaldehyde?

Ammonium carbonate

Iodine standard volumetic solution

Iron(III) citrate?pentahydrate

Polyethylene glycol 10000?

Copper standard solution for impurity

Ammonium hydrogen difluoride?

Chromium powder?

tert-Butylamine?

Sodium tungstate?dihydrate

Nickel(II) chloride?hexahydrate

Ethanol absolute 99.98%

Diacetone alcohol?

1,1,2,2-Tetrachloroethane?

Stannous methanesulfonate

Copper(II) nitrate?trihydrate

Barium hydroxide?octahydrate

β- Cyclodextrin

Ammonium acetate?

Zinc nitrate?hexahydrate

N,N'-Methylene bisacrylamide

Hydroxylamine sulfate

Polyethylene glycol 6000?

Lead(Ⅱ) oxide yellow

Sodium carboxymethyl cellulose 300-800?

4,4'-Diaminodiphenylmethane?

Alizarin complexone

Sodium dodecylbenzenesulfonate?

Sodium diethyldithiocarbamate trihydrate

Selenite Cystine broth?

Zinc dihydrogen phosphate?

Glucose anhydrous?

Devarda's alloy

Camphor synthetic

Lanolin anhydrous

Hydrazinium sulfate

Zinc sulfate?heptahydrate

Carbon tetrachloride?

Bromocresol green

Aluminum sulfate?octadecahydrate

Ethylene glycol?

Lanthanum chloride?heptahydrate

Barium nitrate?

N,N-Dimethylformamide?

Sodium 1-pentanesulfonate?

Potassium acetate

Potassium hydrogen phthalate

Potassium chromate indicator solution.

Sodium fluoroaluminate?

Sodium hydrogen carbonate?

Benzyl alcohol?

2-Mercaptobenzothiazole

Lithium carbonate?

Aluminum oxide neutral?200-300

Ethylamine water solution

Lead(II) nitrate standard volumetic solution

Bromocresol purple

Cobalt(II) nitrate?hexahydrate

Sodium persulfate?

Lead(Ⅱ) nitrate

Butyl acrylate?

Tin(II) sulfate?

Copper(II) chloride dihydrate

Sudan III (C.I.26100)

Sodium hydroxide standard volumetic solution

Calcium dihydrogen phosphate?

Potassium hexachloroplatinate(Ⅳ)

N-Bromosuccinimide

2,4-Dinitrophenylhydrazine

Nitric acid 53-55%

Maleic anhydride

Barbituric acid?

Sodium carboxymethyl cellulose?800-1200

di-Potassium hydrogen phosphate trihydrate

Disodium hydrogen phosphate?dodecahydrate

sec-octyl alcohol

Ethylene glycol phenyl ether?

Barium oxide?anhydrous

Copper(II) oxalate hemihydrate

Copper(II) acetate?monohydrate

Potassium bromate?

Histamine phosphate

Phenol red solution 0.02%（AR)

Sodium dihydrogen phosphate monohydrate

Potassium chlorate

1,5-Diphenylcarbazide

Ethanol 73%～75%

Methyl salicylate

Lithium chloride?monohydrate

Selenium powder?

Potassium tartrate hemihydrate

Sodium thiosulfate?pentahydrate

iso-Amyl acetate

Strontium sulfate?

Ammonium sulfate?

Diethyl malonate

Nicotinic acid?

Neutral red (C.I.50040)

Sodium hypochlorite?

Thioglycollate medium?

Cobalt(II) acetate?tetrahydrate

Methylene blue (C.I.52015)

Ethanolamine 10%

Eosin Y (water soluble) (C.I.45380)

Sodium perchlorate?monohydrate

Charcoal activated powder

Aluminum oxide neutral?

N-Phenylanthranilic acid

1-Amino-2-naphthol-4-sulfonic acid?

Guanidinium chloride

Hydrobromic acid?

Sodium hydroxide?solution 40%

Bismuth subnitrate?

Lanthanum nitrate?hexahydrate

Sodium dihydrogen phosphate?dihydrate

Hydrochloric acid standard volumetic solution

Tin(IV) chloride pentahydrate

Nickel(III) oxide?

1,4-Phenylenediammonium dichloride

Triphenylphosphine?

Sodium chromate tetrahydrate

Aniline blue (water soluble) (C.I.42755)

Chrome azurol S (C.I.43825)

Methylamine water solution?

Potassium pyrosulfate

Iodine monochloride?

Magnesium sulfate?heptahydrate

Polyethylene glycol 4000?

Sulfuric acid standard volumetic solution

Glycerol monostearate

Potassium permangaNot availablete standard volumetic solution

p-Toluene sulfonamide

Chromium(III) nitrate?nonahydrate

Polyethylene glycol 1450

Lithium hydroxide?monohydrate

Hydrochloric acid?31%

Bismuth(III) oxide?

Formaldehyde solution?

Copper(II) carbonate basic

Phthaldialdehyde

2,3,5-Triphenyl tetrazolium chloride

Trisodium phosphate?dodecahydrate

Sodium sulfite anhydrous?

Polyethylene glycol 400?

Chromium(III) sulfate hexahydrate

Potassium dihydrogen phosphate

1-Bromopropane?

iso-Butyl acetate?

2-Butyne-1,4-diol

Nigrosine (water soluble)

Congo red (C.I. 22120)

Potassium pyrophosphate trihydrate

Paraffin liquid?

Potassium oleate

Aluminum acetylacetonate

4-Hydroxybenzaldehyde?

Antimony trioxide?

Calcium sulfate?

Tributyl phosphate?

Ammonium dichromate?

Sodium pyrosulfite

Hydroxylammonium chloride

Eriochrome black T (C.I.14645)

Ethyl 4-hydroxybenzoate

1,2-Propanediol?

Potassium?perchlorate

Bromocresol green sodium salt

Crystal violet?(C.I.42555)

Alizarin yellow GG

Sodium dithionite

Iodine trichloride?

Phosphomolybdic acid?

Ammonium dihydrogen phosphate?

Nickel(II) nitrate hexahydrate

Ethylene glycol monomethyl ether?

Diethylene glycol monoethyl ether?

Sulfuric acid?75%

Albumin flake(egg)

Potassium standard solution for impurity

Sodium potassium tartrate?tetrahydrate

D(+)-Cellobiose

Perchloric acid?

Diethyl ether?anhydrous

Iron(III) oxide?

Potassium thiosulfate hydrate

Polyethylene glycol 1000?

Potassium metabisulfite

Sodium hydroxide?solution 49%

Phosphorous acid?

Chromium(Ⅲ) potassium sulfate dodecahydrate

2,4-Dinitrophenol

Potassium stannate

Sodium fluorosilicate?

1,3,5-Trimethylbenzene?

Polyethylene glycol 300?

Iron(III) sulfate

1,2-Phenylenediamine

Diboron trioxide?

Sodium dichromate?dihydrate

Palladium(II) chloride anhydrous

Ethylenediamine tetraacetic acid standard solution

D-Glucose?monohydrate

Diammonium hydrogen citrate?

Methyl red sodium salt

Methane sulfonic acid

Potassium antimony tartrate

Chloral hydrate

Ammonium cerium(IV) nitrate

Sodium standard solution for impurity

Hydrogen peroxide 30%

Thiamine chloride hydrochloride

Sodium alginate?

Chromium(III) oxide?

Magnesium powder 200

Diethyl o-phthalate?

mercaptoacetic acid

Sodium silicate?nonahydrate

Charcoal activated granular

Zirconium oxychloride?octahydrate

Ethylenediaminetetraacetic acid ferric monosodium salt

Fluosilicic acid?23%-25%

Sodium hydroxide?solution 32%

Ammonium iron(III) sulfate?dodecahydrate

Magnesium turnings

Sodium hydrogen fluoride

Potassium nitrite

Ammonium formate?

Diethylenetriamine

Thymolphthalein

Potassium permanganate

Zirconium nitrate

Magnesium ribbon?99.5%

Cerium(IV) sulfate?tetrahydrate

Dicyclohexyl phthalate

Alizarin yellow R (C.I.14030)

1-Cyanoguanidine

Sodium tetraborate?decahydrate

Manganese nitrate?solution 50%

1-(2-Pyridylazo)-2-naphthol?

Calcium fluoride?

4-Aminoantipyrine

Butyl methacrylate

4-Chlorophenoxy acetic acid

Ammonium cerium(IV) sulfate standard volumetic solution

Potassium hydrogen sulfate?

Tungsten trioxide?

Lithium nitrate

Iron?powder reduced

Hydrazium dichloride

Triphenyl phosphite?

Sodium tartrate?dihydrate

Benzenemethanaminium

Nitric acid 40%

Sodium metaborate hydrate

4-Nitrobenzoic acid?

Sodium 1-octanesulfonate?

Cyclohexylamine

Silicone oil H201-100

Zinc free from arsenic?

Dimethylglyoxime

Triethylenetetramine

Lithium sulfate?monohydrate

?Pyrogallol acid

Magnesium ribbon

Phenol red sodium salt

Potassium hexacyanoferrate(Ⅱ) trihydrate

Sodium ammonium hydrogen phosphate?

Phenolphthalein

Methyl red (C.I. 13020)

Triethylene glycol?

Triethyl phosphate?

Diammonium hydrogen phosphate?

Potassium hexacyanoferrate(Ⅲ)

Nickel(II) acetate?

di-Potassium hydrogen phosphate anhydrous

Lymphocyte separation media?

Fluorescein?sodium

Manganese standard solution for impurity

Triphenyl phosphate?

Copper(I) chloride?

Thionyl chloride

Ammonium fluoride?

Sodium aluminate

Sulfanilic acid

Triethyl orthoformate

Sodium barbital?

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1

日韩av无码一区二区三区无码| 精产一二三产区m553| 大ji巴好深好爽又大又粗视频| 国产又黄又爽又猛免费视频播放| 怡红院免费的全部视频| 国产V亚洲V天堂A无码| 免费国产又色又爽又黄的网站| 国产精品香港三级国产av| 999久久久国产精品消防器材| 精品黑人一区二区三区| 免费无码高潮流白浆视频| 九色综合久99久久精品| 久久天天躁狠狠躁夜夜不卡| 久久伊人精品一区二区三区| 蜜臀色欲av在线播放国产日韩| 美女视频黄频a美女大全| 苍井空张开腿实干12次| 在线精品无码字幕无码av| 国产九九九九九九九a片| 国内少妇人妻偷人精品视频| 国产精品无码专区第一页| 天天拍夜夜添久久精品大| 天天拍夜夜添久久精品大| 成人黄色精品一区二区| 影音先锋2020色资源网| 国产精品水嫩水嫩| 日本三级片网站| 亚洲av无码专区亚洲av | 丰满人妻av无码一区二区三区| 亚洲日韩v无码中文字幕| 日韩av一区二区三区在线| 人妻少妇太爽了嫩草影院| 麻豆秘密入口亚洲综合| 亚洲黄色视屏在线观看| 中文字幕乱码免费在线视频| 久久精品超碰AV无码| 福利片无码视频一区二区| 国产精品成人久久久久久久| 亚洲精品91中文字幕| 色视频在线观看免费视频| 亚洲精品一区二区三区播放|