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inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
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inquiryUnique advantages for H Acid Cas 90-20-0 High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:Powder Storage:Store at room Package:25kg/bag Application:Intermediates Transportation:BY SEA/AIR/COURIER P
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inquiryAbout Product Details Item Specification Test Results Appearance White crystalline powder Conform
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inquiry1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Basic information Product Name: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Synonyms: 1-AMINO-8-NAPHTHOL-3,6
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inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥97% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can
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inquiryWITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
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inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
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inquiry1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd
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inquiry1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS:90-20-0 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures
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inquiry1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0 Our advantage 1.Top quality: Using high quality material and establishing a strict quality control system,assigning specific persons in charge of each part of production,from raw m
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inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Service 1.Own made fine chemical products 2.Out sourcing and qua
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inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
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inquiry1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid CAS 90-20-0 Description Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality materi
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquirySuperior quality, moderate price & quick delivery. Appearance:white crystalline powder Storage:stored in a cool, dry and ventilated place to provent sun and rain Package:25kg/drum, or as per your request. Application:Used as Pharmaceutical
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inquiryProduct Name 1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid CAS No 90-20-0 Assay 98% Package 25kg/drum Usage
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inquiryWe are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED
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inquiry4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sulfuric acid; water at 90℃; for 5h; | 65.86% |
8-amino-naphthalene-1,3,6-trisulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sodium hydroxide; water at 180 - 190℃; im offenen Gefaess; | |
With sodium hydroxide at 210℃; im geschlossenen Gefaess; | |
durch Alkalischmelze; | |
Stage #1: 8-amino-naphthalene-1,3,6-trisulfonic acid With sodium hydroxide under 6750.68 Torr; for 6h; Stage #2: With sulfuric acid In water for 2h; pH=2; |
1,8-diamino-3,6-naphthalenedisulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
at 200 - 210℃; |
1,8-diamino-3,6-naphthalenedisulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sulfuric acid at 110 - 120℃; | |
With diluted alkali at 200 - 210℃; Kochen der erhaltenen Produkte nut verd. Schwefelsaeure oder Salzsaeure; |
sulfuric acid
1H-naphtho[1,8-de][1,2,3]triazine-5,8-disulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
at 170℃; |
water
1,1-dioxo-2H-1λ6-naphth[1,8-cd]isothiazole-4,7-disulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
at 180℃; beim Schmelzen; |
4-amino-5-chloro-naphthalene-2,7-disulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
beim Verschmelzen; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: durch Nitrierung und Reduktion der entstandenen Dinitroverbindung 2: diluted alkali / 200 - 210 °C / Kochen der erhaltenen Produkte nut verd. Schwefelsaeure oder Salzsaeure View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sulfuric acid / 100 - 165 °C 1.2: 10.75 h / 30 - 165 °C 2.1: nitric acid / 10 °C 3.1: iron / 60 °C 3.2: 80 - 90 °C 4.1: sodium hydroxide / 6 h / 6750.68 Torr 4.2: 2 h / pH 2 View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: nitric acid / 10 °C 2.1: iron / 60 °C 2.2: 80 - 90 °C 3.1: sodium hydroxide / 6 h / 6750.68 Torr 3.2: 2 h / pH 2 View Scheme |
Conditions | Yield |
---|---|
Stage #1: 1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt With sodium hydroxide In methanol at 180 - 200℃; under 21002.1 Torr; Stage #2: With sulfuric acid In methanol |
naphthalene
A
chromatotropic acid
B
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sulfur trioxide; sulfuric acid / 65 - 150 °C 1.2: 40 °C 2.1: hydrogen / 170 °C / 150015 Torr 3.1: sodium hydroxide / methanol / 180 - 200 °C / 21002.1 Torr View Scheme |
1,3,5-trichloro-2,4,6-triazine
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
1,4-bis((4-aminophenyl)amino)anthrancene-9,10-dione
aniline
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate In water at 0 - 5℃; for 1h; pH=4 - 5; Stage #2: aniline In water at 25 - 30℃; for 3h; pH=5 - 6; Stage #3: 1,4-bis((4-aminophenyl)amino)anthrancene-9,10-dione Further stages; | 91.3% |
Conditions | Yield |
---|---|
Stage #1: C12H16N2O6S2 With hydrogenchloride; sodium nitrite In water Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium hydrogencarbonate In water for 3h; pH=3.5; | 90% |
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4; Stage #3: sodium 7-aminonaphthalene-1,3,6-trisulphonate Further stages; | 86.4% |
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4; Stage #3: sodium 3‐aminonaphthalene‐1,5‐disulfonate Further stages; | 86.4% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
10-[(4'-bromomethyl)benzil]phenothiazine
4-hydroxy-5-(4-phenothiazin-10-ylmethyl-benzylamino)-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium acetate In water at 5 - 25℃; for 8h; Condensation; | 85% |
1,3,5-trichloro-2,4,6-triazine
2-amino-1-benzenesulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 1-amino-2-sulfonic acid-4-(3-amino-2,4,6-trimethyl-5-sulfoamidophenyl)anthraquinone monosodium salt In water at 0 - 5℃; for 4h; pH=4- 6.5; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 28 - 35℃; pH=3.5 - 4; Stage #3: 2-amino-1-benzenesulfonic acid Further stages; | 84.23% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
Stage #1: bis(2-hydroxyethyl) 2-aminoterephthalate With hydrogenchloride; cis-nitrous acid In water at 5℃; for 5h; pH=8.5; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate for 1h; pH=8.5; | 83.3% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate; sodium chloride In water 1.) 0-5 deg C, 3 h; 2.) 60 deg C, 1 h; | 83% |
Conditions | Yield |
---|---|
Stage #1: 3-aminobenzoyl fluoride With hydrogenchloride; sodium nitrite In water at 0 - 5℃; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With ammonium chloride In water at 0 - 5℃; for 0.666667h; pH=5.5 - 6.5; | 81% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
3-aminoterephthalic acid
Conditions | Yield |
---|---|
Stage #1: 3-aminoterephthalic acid With hydrogenchloride; cis-nitrous acid In water at 10℃; for 5h; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid With sodium carbonate pH=7.5; | 80.2% |
2-(p-aminophenylsulfonyl)ethyl hydrogen sulfate
1,3,5-trichloro-2,4,6-triazine
2-amino-1-benzenesulfonic acid
1-hydroxy-6-amino-3-naphthalenesulfonic acid
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
2,4-Diaminobenzenesulfonic acid
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 7-amino-4-hydroxy-2-naphthalenesulfonic acid With sodium hydroxide In water at 0 - 5℃; pH=5.6 - 6.5; Stage #2: With sodium carbonate In water at 3 - 5℃; for 5h; Stage #3: 2-(p-aminophenylsulfonyl)ethyl hydrogen sulfate; 2-amino-1-benzenesulfonic acid; 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid; 2,4-Diaminobenzenesulfonic acid Further stages; | 77.1% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
p-toluenesulfonyl chloride
N-(p-tosyl)-H-acid
Conditions | Yield |
---|---|
With sodium acetate; sodium hydroxide In water at 70℃; pH=3 - 6; Darkness; | 77% |
1,3,5-trichloro-2,4,6-triazine
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
1-(4'-sulfophenyl)-3-methylpyrazol-5-one
2-amino-4-acetylaminobenzene sulfonic acid
2-amino-1,4-benzenedisulfonic acid monosodium Salt
Conditions | Yield |
---|---|
Stage #1: 1,3,5-trichloro-2,4,6-triazine; 2-amino-1,4-benzenedisulfonic acid monosodium Salt In water at 0℃; for 3h; pH=6; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 35℃; for 4h; pH=4 - 5; Stage #3: 1-(4'-sulfophenyl)-3-methylpyrazol-5-one; 2-amino-4-acetylaminobenzene sulfonic acid Further stages; | 58.7% |
trifluoro-[1,3,5]triazine
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
1-(4'-sulfophenyl)-3-methylpyrazol-5-one
2-amino-4-acetylaminobenzene sulfonic acid
2-amino-1,4-benzenedisulfonic acid monosodium Salt
Conditions | Yield |
---|---|
Stage #1: trifluoro-[1,3,5]triazine; 2-amino-1,4-benzenedisulfonic acid monosodium Salt In water at 0 - 5℃; pH=3 - 4; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid In water at 25℃; pH=4 - 5; Stage #3: 1-(4'-sulfophenyl)-3-methylpyrazol-5-one; 2-amino-4-acetylaminobenzene sulfonic acid Further stages; | 52.1% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sodium acetate; acetic acid In water for 0.5h; | 49% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
pH 5; | 44% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
Stage #1: 4,4'-Diaminostilbene dihydrochloride diazotization; Stage #2: 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid | 38.5% |
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
pH 9; | 38% |
phosgene
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
2-oxo-2,3-dihydro-naphth[1,8-de][1,3]oxazine-5,8-disulfonic acid
Conditions | Yield |
---|---|
With alkali |
8-formylquinoline
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With ethanol; water |
1,3,5-trichloro-2,4,6-triazine
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
4-(4,6-dichloro-[1,3,5]triazin-2-ylamino)-5-hydroxy-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium hydroxide | |
With sodium hydroxide In water at 0 - 5℃; for 1.5h; | |
With sodium hydroxide; disodium hydrogenphosphate In water at 0℃; for 2h; pH=3; |
3-acetoxy-2-naphthoyl chloride
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With alkali Verseifung der entstandenen Acetylverbindung mit verd. Natronlauge; |
2-methoxy-benzenediazonium
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate |
4-methylbenzene diazonium
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
5-amino-4-hydroxy-3-p-tolylazo-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate |
o-Carboxybenzenediazonium
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
2-(8-amino-1-hydroxy-3,6-disulfo-[2]naphthylazo)-benzoic acid
Conditions | Yield |
---|---|
With sodium carbonate |
diazotiertes o-Phenetidin
4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate |
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