Description Sources
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3,3'-DIMETHYLNAPHTHIDINE

Description Sources
Product Name
3,3'-DIMETHYLNAPHTHIDINE
CAS No.
13138-48-2
Chemical Name
3,3'-DIMETHYLNAPHTHIDINE
Synonyms
Einecs 236-069-0;3,3-DIMETHYLNAPHTHIDINE;3,3'-DIMETHYLNAPHTHIDINE;3,3' -dimethylbipyridine;3,3'-DIMETHYLNAPHTHIDINE;3 3-DIMETHYLNAPHTHIDINE 98%;3 3'-DIMETHYLNAPHTHIDINE REDOX IND. &;3,3'-DIMETHYLNAPHTHIDINE METAL INDICATOR;3,3-Dimethylnaphthidine extrapure AR, 98%;4,4'-DIAMINO-3,3'-DIMETHYL-1,1'-BINAPHTHYL
CBNumber
CB4439046
Molecular Formula
C22H20N2
Formula Weight
312.41
MOL File
13138-48-2.mol
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3,3'-DIMETHYLNAPHTHIDINE Property

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
pka
4.79±0.10(Predicted)
color 
White to Gray to Brown
BRN 
2152306
CAS DataBase Reference
13138-48-2(CAS DataBase Reference)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39
WGK Germany 
3
HS Code 
2921 59 90
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
1.03122
Product name
3,3′-Dimethylnaphthidine
Packaging
1g
Price
$767
Updated
2024/03/01
TCI Chemical
Product number
D0754
Product name
3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water]
Purity
>97.0%(T)
Packaging
1g
Price
$247
Updated
2024/03/01
TCI Chemical
Product number
D0754
Product name
3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water]
Purity
>97.0%(T)
Packaging
5g
Price
$789
Updated
2024/03/01
TRC
Product number
D461378
Product name
3,3''-Dimethylnaphthidine
Packaging
50mg
Price
$110
Updated
2021/12/16
TRC
Product number
D461378
Product name
3,3''-Dimethylnaphthidine
Packaging
100mg
Price
$155
Updated
2021/12/16
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3,3'-DIMETHYLNAPHTHIDINE Chemical Properties,Usage,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

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3,3'-DIMETHYLNAPHTHIDINE Suppliers

Americas 1 Austria 1 China 80 Europe 1 Germany 3 India 5 Japan 1 South Korea 1 Switzerland 1 United Kingdom 6 United States 13 Global 113
Service Chemical Inc.
Tel
--
Fax
--
Email
sales@chemos-group.com
Country
Germany
ProdList
6350
Advantage
71
ABCR GmbH & CO. KG
Tel
--
Fax
--
Email
info@abcr.de
Country
Germany
ProdList
6831
Advantage
75
Merck Schuchardt OHG
Tel
--
Fax
--
Email
schuchardt-vertrieb@merck.de
Country
Germany
ProdList
5827
Advantage
74

13138-48-2, 3,3'-DIMETHYLNAPHTHIDINERelated Search:

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

  • 3,3'-DIMETHYLNAPHTHIDINE
  • 3,3-DIMETHYLNAPHTHIDINE
  • 3,3'-DIMETHYL-(1,1'-BINAPHTHALENE)-4,4'-DIAMINE
  • 4,4'-DIAMINO-3,3'-DIMETHYL-1,1'-BINAPHTHYL
  • 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. &
  • 3,3'-DIMETHYLNAPHTHIDINE INDICATOR FOR M ETAL TITRATION
  • Einecs 236-069-0
  • 3,3'-DIMETHYLNAPHTHIDINE, REDOX IND. FOR COMPLEXOMETRY
  • 3,3′-Dimethylnaphthidine,4,4′-Diamino-3,3′-dimethyl-1,1′-binaphthyl
  • 3,3'-DIMETHYLNAPHTHIDINE METAL INDICATOR
  • 3,3-DiMethyl-[1,1'-binaphthalene]-4,4(3H)-diaMine
  • 3,3'-Dimethylnaphthidine[forColorimetricDeterminationofClinWater]&gt
  • 4-(4-amino-3-methylnaphthalen-1-yl)-2-methylnaphthalen-1-amine
  • 3,3-Dimethylnaphthidine extrapure AR, 98%
  • 3,3' -dimethylbipyridine
  • 3,3'-DIMETHYLNAPHTHIDINE
  • 3,3'-Dimethyl-[1,1'-binaphthalene]-4,4'-diamine
  • 3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water
  • 13138-48-2
  • C22H20N2