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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
Molecular Weight:
312.41
MDL Number:
MFCD00042706
MOL File:
13138-48-2.mol
Last updated:2023-06-08 17:06:38

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.
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)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
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
NFPA 704
0
2 0

3,3'-DIMETHYLNAPHTHIDINE price More Price(16)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.03122 3,3′-Dimethylnaphthidine 13138-48-2 1g $767 2024-03-01 Buy
TCI Chemical D0754 3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water] >97.0%(T) 13138-48-2 1g $247 2024-03-01 Buy
TCI Chemical D0754 3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water] >97.0%(T) 13138-48-2 5g $789 2024-03-01 Buy
TRC D461378 3,3''-Dimethylnaphthidine 13138-48-2 50mg $110 2021-12-16 Buy
TRC D461378 3,3''-Dimethylnaphthidine 13138-48-2 100mg $155 2021-12-16 Buy
Product number Packaging Price Buy
1.03122 1g $767 Buy
D0754 1g $247 Buy
D0754 5g $789 Buy
D461378 50mg $110 Buy
D461378 100mg $155 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.]

2246-44-8
13138-48-2
Synthesis of 3,3'-DIMETHYLNAPHTHIDINE from 1-AMINO-2-METHYLNAPHTHALENE

3,3'-DIMETHYLNAPHTHIDINE Preparation Products And Raw materials

Global( 113)Suppliers
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City Chemical LLC
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Jilin Chinese Academy of Sciences-yanshen Technology
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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 3,3-DIMETHYLNAPHTHIDINE 3,3'-DIMETHYL-(1,1'-BINAPHTHALENE)-4,4'-DIAMINE 4,4'-DIAMINO-3,3'-DIMETHYL-1,1'-BINAPHTHYL 3,3'-Dimethylnaphthidine[forColorimetricDeterminationofClinWater]> 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