Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  Chemical Reagents >  Organic reagents >  The polycyclic compound >  Calconcarboxylic acid

Calconcarboxylic acid

Basic information Safety Supplier Related

Calconcarboxylic acid Basic information

Product Name:
Calconcarboxylic acid
Synonyms:
  • 2-Hydroxy[(2-hydroxy-4-sulpho-1-naphthalene)azo]naphthalene-3-carboxylicacid
  • 2-naphthalenecarboxylicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)az
  • 3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-2-NAPHTHALENECARBOXYLIC ACID
  • 3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)NAPHTHALENE-2-CARBOXYLIC ACID
  • 2-HYDROXY-1-(2'-HYDROXY-4'-SULFO-1'-NAPHTHYLAZO)-3-NAPHTHOIC ACID
  • 2-HYDROXY-1-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-3-NAPHTHOIC ACID
  • 2-HYDROXY-1-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-NAPHTHALENE-3-CARBOXYLIC ACID
  • 2-HYDROXY-1-(2-HYDROXY-4-SULPHO-1-NAPHTHYLAZO)-3-NAPHTHOIC ACID
CAS:
3737-95-9
MF:
C21H14N2O7S
MW:
438.41
EINECS:
223-117-0
Product Categories:
  • Analytical Chemistry
  • Azo Compounds
  • Chelating Reagents
  • Naphthylazo Compounds
Mol File:
3737-95-9.mol
More
Less

Calconcarboxylic acid Chemical Properties

Melting point:
300 °C(lit.)
Density 
1.60±0.1 g/cm3(Predicted)
form 
Powder
pka
-0.50±0.40(Predicted)
color 
Very dark purple to black
Odor
Odorless
Water Solubility 
slightly soluble
BRN 
727492
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
3737-95-9(CAS DataBase Reference)
EPA Substance Registry System
2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]- (3737-95-9)
More
Less

Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
3
TSCA 
Yes
HS Code 
29270000

MSDS

More
Less

Calconcarboxylic acid Usage And Synthesis

Chemical Properties

dark violet powder

Uses

Calconcarboxylic acid is used as an indicator for calcium titrations with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium.

Purification Methods

Purify it via its p-toluidinium salt, viz: dissolve the dye in warm 20% aqueous MeOH, treat with an equivalent of p-toluidine and cool to precipitate the salt. Finally recrystallise the acid from hot water. [Itoh & Ueno Analyst (London) 95 583 1970.] It is an indicator and complexes with Ca2+ in presence of Mg2+ and other metal ions [Patton & Reeder Anal Chem 28 1026 1956, Prentoe & Prentoe Analyst 106 227 1981].

Calconcarboxylic acidSupplier

J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Email
sh@meryer.com
Alfa Aesar
Tel
400-610-6006; 021-67582000
Email
saleschina@alfa-asia.com
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Email
Sales-CN@TCIchemicals.com
Energy Chemical
Tel
021-58432009-
Email
sales8178@energy-chemical.com