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3,3'-DIMETHYLNAPHTHIDINE

Description Sources
3,3'-DIMETHYLNAPHTHIDINE
3,3'-DIMETHYLNAPHTHIDINE structure
CAS No.
13138-48-2
Chemical Name:
3,3'-DIMETHYLNAPHTHIDINE
Synonyms
Einecs 236-069-0;3,3-DIMETHYLNAPHTHIDINE;3,3'-DIMETHYLNAPHTHIDINE;3 3-DIMETHYLNAPHTHIDINE 98%;3 3'-DIMETHYLNAPHTHIDINE REDOX IND. &;3,3'-DIMETHYLNAPHTHIDINE METAL INDICATOR;4,4'-DIAMINO-3,3'-DIMETHYL-1,1'-BINAPHTHYL;4 4-DIAMINO-3 3-DIMETHYL-1,1-BINAPHTHYL 98%;3,3-DIMETHYLNAPHTHIDINE METAL (PM) INDICATOR;1,1-Binaphthalene-4,4-diamine, 3,3-dimethyl-
CBNumber:
CB4439046
Molecular Formula:
C22H20N2
Formula Weight:
312.41
MOL File:
13138-48-2.mol

3,3'-DIMETHYLNAPHTHIDINE 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.
pka
4.79±0.10(Predicted)
BRN 
2152306
CAS DataBase Reference
13138-48-2(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-37/39
WGK Germany  3
HS Code  2921 59 90

3,3'-DIMETHYLNAPHTHIDINE price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 33135 3,3′-Dimethylnaphthidine indicator for metal titration 13138-48-2 0 $0 2019-12-02 Buy
Sigma-Aldrich 1.03122 3,3′-Dimethylnaphthidine 13138-48-2 1 g $533.72 2021-03-22 Buy
Sigma-Aldrich 1.03122 3,3'-Dimethylnaphthidine 3,3'-Dimethylnaphthidine. CAS 13138-48-2, molar mass 312.42 g/mol. 13138-48-2 1031220001 $559 2020-08-18 Buy
TCI Chemical D0754 3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water] >97.0%(T) 13138-48-2 1g $245 2021-03-22 Buy
TCI Chemical D0754 3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water] >97.0%(T) 13138-48-2 5g $827 2021-03-22 Buy

3,3'-DIMETHYLNAPHTHIDINE Chemical Properties,Uses,Production

Description

3, 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.

Sources

https://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 Methods

Recrystallise the naphthidine from EtOH or pet ether (b 60-80o). [Beilstein 13 IV 493.]

3,3'-DIMETHYLNAPHTHIDINE Preparation Products And Raw materials

Raw materials

Preparation Products


3,3'-DIMETHYLNAPHTHIDINE Suppliers

Global( 92)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
City Chemical LLC
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Alchem Pharmtech,Inc.
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CONIER CHEM AND PHARMA LIMITED
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Antai Fine Chemical Technology Co.,Limited
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Shanghai Daeyeon Chemicals Co., Ltd
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Hefei TNJ Chemical Industry Co.,Ltd.
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CD Chemical Group Limited
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Mainchem Co., Ltd. +86-0592-6210733
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3,3'-DIMETHYLNAPHTHIDINE Spectrum


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