Dayangchem's 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. DayangChem can provide different quantities
Cas:148-25-4
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiry1,8-Dihydroxynaphthylene-3,6-disulfonic acid CAS 148-25-4 Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives,
Cas:148-25-4
Min.Order:10 Kilogram
FOB Price: $10.0
Type:Trading Company
inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Cas:148-25-4
Min.Order:1
Negotiable
Type:Other
inquiryOur main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:148-25-4
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryOverview of Our Factories Our Factories production lines Our Factories R&D ability Our Factories warehouse Our Factorie
Cas:148-25-4
Min.Order:1 Kilogram
FOB Price: $30.0 / 35.0
Type:Lab/Research institutions
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
Cas:148-25-4
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
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 ♦ W
Cas:148-25-4
Min.Order:1 Kilogram
FOB Price: $289.0 / 499.0
Type:Trading Company
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
Cas:148-25-4
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
Cas:148-25-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry1,8-Dihydroxynaphthylene-3,6-disulfonic acid CAS:148-25-4 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 hig
Cas:148-25-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:148-25-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Cas:148-25-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryBest quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
Cas:148-25-4
Min.Order:0
Negotiable
Type:Manufacturers
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
Cas:148-25-4
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryJ&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
Cas:148-25-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryA 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
Cas:148-25-4
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
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
Cas:148-25-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:148-25-4
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
inquiry1,8-Dihydroxynaphthylene-3,6-disulfonic acid 4,5-dihydroxy-7-naphthalenedisulfonicacid; 7-Naphthalenedisulfonicacid, 4,5-dihydroxy-2; Chrmotropicacid; 4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID; 4,5-dihydroxynaphthalene- 1,8-DIHYDROXYNAPHTHALEN
Product name: Chromotropic Acid(1,8-Dihydroxynaphthalene-3,6-Disulfonic Acid) CAS No.:148-25-4 Molecule Formula:C10H8O8S2 Molecule Weight:320.30 Purity: 75.0% Package: 25kg/bag Description:Light grey to white crystalline powder Manufa
Cas:148-25-4
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:148-25-4
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
High quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle
Cas:148-25-4
Min.Order:1 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiry1,8-Dihydroxynaphthylene-3,6-disulfonic acid Basic information Product Name: 1,8-Dihydroxynaphthylene-3,6-disulfonic acid Synonyms: 4,5-dihydroxy-7-naphthalenedisulfonicacid;7-Naphthalenedisulfonicacid,4,5-dihydroxy-2;Chrmotropicacid;8-Dihydro
Cas:148-25-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
Cas:148-25-4
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryShandong Mopai Biotechnology 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 chemicals. W
Cas:148-25-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu
Cas:148-25-4
Min.Order:0
Negotiable
Type:Trading Company
inquiry1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer
Cas:148-25-4
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
Cas:148-25-4
Min.Order:0
Negotiable
Type:Manufacturers
inquiryWe are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Cas:148-25-4
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryConditions | Yield |
---|---|
With alkali hydroxide at 170 - 220℃; |
Conditions | Yield |
---|---|
With potassium hydroxide at 260 - 280℃; | |
With sodium hydroxide at 260 - 280℃; | |
With sulfuric acid at 145℃; |
Conditions | Yield |
---|---|
With diluted alkali at 260 - 280℃; | |
With diluted acid at 150 - 160℃; |
chromatotropic acid
Conditions | Yield |
---|---|
at 170 - 220℃; beim Verschmelzen; |
chromatotropic acid
Conditions | Yield |
---|---|
With alkali beim Schmelzen; |
chromatotropic acid
Conditions | Yield |
---|---|
With alkali hydroxide at 170 - 220℃; |
chromatotropic acid
Conditions | Yield |
---|---|
With sodium hydroxide; water at 200℃; |
Conditions | Yield |
---|---|
at 260 - 280℃; |
Conditions | Yield |
---|---|
at 170 - 220℃; |
Conditions | Yield |
---|---|
at 260 - 280℃; |
Conditions | Yield |
---|---|
beim Verschmelzen; |
Conditions | Yield |
---|---|
at 150 - 160℃; |
3-[(2,6-dibromo-4-methylphenyl)azo]-6[(2-sulfophenyl)azo]-4,5-dihydoxynaphthalene-2,7-disulfonic acid
A
chromatotropic acid
B
3,5-dibromotoluene
C
benzenesulfonic acid
Conditions | Yield |
---|---|
With potassium metaperiodate In water |
Conditions | Yield |
---|---|
With potassium metaperiodate; bovine serum albumin In ethanol; water at 75℃; for 0.0833333h; pH=2; aq. buffer; Enzymatic reaction; |
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 |
4-(4-acetylamino-2-sulphophenylazo)-2,5-di(2-acetoxyethoxy)aniline
chromatotropic acid
C26H25N5O15S3
Conditions | Yield |
---|---|
Stage #1: 4-(4-acetylamino-2-sulphophenylazo)-2,5-di(2-acetoxyethoxy)aniline With hydrogenchloride; aminosulfonic acid; sodium nitrite In water; acetone at 20℃; for 1h; pH=10; Stage #2: chromatotropic acid With lithium hydroxide In water; acetone at 0 - 10℃; pH=7 - 8; Stage #3: With hydrogenchloride; lithium hydroxide more than 3 stages; | 67% |
chromatotropic acid
4-bromo-5-nitrophthalonitrile
Conditions | Yield |
---|---|
With potassium carbonate In water; N,N-dimethyl-formamide at 90℃; for 2h; | 63.8% |
chromatotropic acid
Conditions | Yield |
---|---|
pH 5; | 37% |
p-nitrobenzenediazonium
chromatotropic acid
3-(4-amino-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid ; sodium salt
Conditions | Yield |
---|---|
With sodium sulfide |
chromatotropic acid
4-ethoxybenzenediazonium
Conditions | Yield |
---|---|
With sodium acetate |
chromatotropic acid
benzene diazonium chloride
3-benzeneazo-4,5-dihydroxynaphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium carbonate at 0 - 5℃; | |
With sodium carbonate at 0 - 5℃; |
chromatotropic acid
sodium ethyl sulfate
4-ethoxy-5-hydroxy-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With alkali at 180 - 200℃; |
chromatotropic acid
Conditions | Yield |
---|---|
With alkali hydroxide |
chromatotropic acid
Conditions | Yield |
---|---|
With sodium hypochlorite |
chromatotropic acid
4,5-dihydroxy-3-(2-hydroxy-4-sulfo-[1]naphthylazo)-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With calcium hydroxide; sodium hydroxide anschliessend mit diazotierter 4-Amino-3-hydroxy-naphthalin-1-sulfonsaeure; |
chromatotropic acid
Conditions | Yield |
---|---|
With calcium hydroxide; sodium hydroxide anschliessend mit diazotiertem 5-Amino-2-anilino-benzolsulfonsaeure in wss.Na2CO3; |
chromatotropic acid
4,5-dihydroxy-6-nitroso-3-(4-sulfo-[1]naphthylazo)-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With hydrogenchloride; sodium nitrite anschliessend mit diazotierter 4-Amino-naphthalin-1-sulfonsaeure; |
chromatotropic acid
Conditions | Yield |
---|---|
With calcium hydroxide beim nachfolgenden Behandeln mit diazotiertem 3,3'-Dimethoxy-benzidin, CuSO4 und wss. NH3; |
2-thiazolylamine
chromatotropic acid
4,5-dihydroxy-3-thiazol-2-ylazo-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
(i) NaNO2, aq. HCl, (ii) /BRN= 1827764/; Multistep reaction; |
chromatotropic acid
4,5,5'-trihydroxy-3,4'-azo-bis-naphthalene-2,7-disulfonic acid
Conditions | Yield |
---|---|
With sodium acetate |
chromatotropic acid
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