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ChemicalBook > Product Catalog >Analytical Chemistry >Standard >Titration standard >3,3'-DIMETHYLNAPHTHIDINE

3,3'-DIMETHYLNAPHTHIDINE

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3,3'-DIMETHYLNAPHTHIDINE Suppliers list
Company Name: City Chemical LLC
Tel: 2039322489
Email: sales@citychemical.com
Products Intro: Product Name:3,3-Dimethylnaphthidine
CAS:13138-48-2
Purity:98+%
Company Name: Alchem Pharmtech,Inc.
Tel: 8485655694
Email: sales@alchempharmtech.com
Products Intro: Product Name:3,3-Dimethyl-[1,1'-binaphthalene]-4,4(3H)-diamine
CAS:13138-48-2
Purity:97+% Package:1g;10g;100g;;1kg Remarks:Z-33176
Company Name: CONIER CHEM AND PHARMA LIMITED
Tel: +8618523575427
Email: sales@conier.com
Products Intro: Product Name:3,3'-dimethylnaphthidine
CAS:13138-48-2
Purity:0.99 Package:1kg
Company Name: Antai Fine Chemical Technology Co.,Limited
Tel: 18503026267
Email: info@antaichem.com
Products Intro: Product Name:3,3'-Dimethylnaphthidine
CAS:13138-48-2
Purity:0.98 Package:1KG;5KG;25KG
Company Name: Shanghai Daeyeon Chemicals Co., Ltd
Tel: 021-64478606 +8615900664856
Email: daeyeon001@vip.163.com
Products Intro: Product Name:4-(4-amino-3-methylnaphthalen-1-yl)-2-methylnaphthalen-1-amine
CAS:13138-48-2
Purity:>97% (T) Package:Aluminum plastic composite bag 25kg cardboard drum As required Remarks:Crystal
3,3'-DIMETHYLNAPHTHIDINE Basic information
Description Sources
Product Name:3,3'-DIMETHYLNAPHTHIDINE
Synonyms:3,3-Dimethylnaphthidine (for colorimetric detemination of Cl in water);1,1-Binaphthalene-4,4-diamine, 3,3-dimethyl-;4 4-DIAMINO-3 3-DIMETHYL-1,1-BINAPHTHYL 98%;3,3-DIMETHYLNAPHTHIDINE [FOR COLORIMETRIC DETERMINATION OF CL IN WATER] 97+%;3,3-DIMETHYLNAPHTHIDINE METAL (PM) INDICATOR;3 3-DIMETHYLNAPHTHIDINE 98%;3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water];3 3'-DIMETHYLNAPHTHIDINE REDOX IND. &
CAS:13138-48-2
MF:C22H20N2
MW:312.41
EINECS:236-069-0
Product Categories:
Mol File:13138-48-2.mol
3,3'-DIMETHYLNAPHTHIDINE Structure
3,3'-DIMETHYLNAPHTHIDINE Chemical Properties
Melting point 232 °C
Boiling point 479.3±40.0 °C(Predicted)
density 1.201±0.06 g/cm3(Predicted)
storage temp. Store below +30°C.
Water Solubility Slightly soluble in water
form powder to crystal
pka4.79±0.10(Predicted)
color White to Gray to Brown
BRN 2152306
CAS DataBase Reference13138-48-2(CAS DataBase Reference)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-37/39
WGK Germany 3
HS Code 2921 59 90
MSDS Information
ProviderLanguage
SigmaAldrich English
3,3'-DIMETHYLNAPHTHIDINE Usage And Synthesis
Description3, 3-Dimethylnaphthidine is a polycyclic aromatic hydrocarbon, being one kind of dimethylnaphthidine isomers. It is a useful indicator for metal titration (for example, the titration of aluminum using EDTA method, determination of vanadium). It has also been used for the photometric determination of small amount of oxygen as well as chlorine in water.
Sourceshttps://en.wikipedia.org/wiki/2,6-Dimethylnaphthalene
https://www.sigmaaldrich.com/catalog/product/aldrich/358932?lang=zh&region=CN
http://www.titrations.info/EDTA-titration-aluminum
http://pubs.rsc.org/en/content/articlehtml/1971/an/an9719600591
http://pubs.rsc.org/en/content/articlehtml/1968/an/an9689300142
https://pubs.acs.org/doi/pdf/10.1021/ac60088a056
Purification MethodsRecrystallise the naphthidine from EtOH or pet ether (b 60-80o). [Beilstein 13 IV 493.]
3,3'-DIMETHYLNAPHTHIDINE Preparation Products And Raw materials
Raw materials1-AMINO-2-METHYLNAPHTHALENE-->NITROUS ACID-->Sulfuric acid-->Acetic acid
Preparation ProductsMenadione
Tag:3,3'-DIMETHYLNAPHTHIDINE(13138-48-2) Related Product Information
1-AMINO-2-METHYLNAPHTHALENE 1,1'-BINAPHTHYL 3,3'-DIMETHYL-NAPHTHIDINE-DISULFONIC ACID naphthidine 3,3'-DIMETHYLNAPHTHIDINE O-Tolidine 3'-METHYL-BIPHENYL-4-YLAMINE 1-PHENYLNAPHTHALENE 1,3-DIMETHYLNAPHTHALENE 4-AMINO-3-METHYLBIPHENYL