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Calconcarboxylic acid

Calconcarboxylic acid Structure
CAS No.
3737-95-9
Chemical Name:
Calconcarboxylic acid
Synonyms
HHSNN;HHSNNA;Kalces;CAL RED;NN【Dotite】;CAL-RED(R);NN Solution;medium: solid;Calconcarboxylic aci;CALCONCARBOXYLIC ACID
CBNumber:
CB9270734
Molecular Formula:
C21H14N2O7S
Molecular Weight:
438.41
MOL File:
3737-95-9.mol
MSDS File:
SDS
Modify Date:
2023/4/23 13:52:06

Calconcarboxylic acid Properties

Melting point 300 °C(lit.)
Density 1.60±0.1 g/cm3(Predicted)
pka -0.50±0.40(Predicted)
form Powder
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)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  3
TSCA  Yes
HS Code  29270000
NFPA 704
0
2 0

Calconcarboxylic acid price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) H3128 Calconcarboxylic acid 3737-95-9 5G ₹4936.2 2022-06-14 Buy
Sigma-Aldrich(India) H3128 Calconcarboxylic acid 3737-95-9 25G ₹15523.05 2022-06-14 Buy
Sigma-Aldrich(India) H3128 Calconcarboxylic acid 3737-95-9 100G ₹29628.03 2022-06-14 Buy
Sigma-Aldrich 1.04595 Calconcarboxylic acid metal indicator 3737-95-9 5G ₹18860 2022-06-14 Buy
Sigma-Aldrich(India) 1.04595 Calconcarboxylic acid metal indicator 3737-95-9 5G ₹18860 2022-06-14 Buy
Product number Packaging Price Buy
H3128 5G ₹4936.2 Buy
H3128 25G ₹15523.05 Buy
H3128 100G ₹29628.03 Buy
1.04595 5G ₹18860 Buy
1.04595 5G ₹18860 Buy

Calconcarboxylic acid Chemical Properties,Uses,Production

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 acid Preparation Products And Raw materials

Raw materials

Preparation Products

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3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, indicator grade, pure Calcon-carboxylic Acid Cal Red 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, pure, indicator grade CALCONCARBOXYLIC ACID METAL INDICATOR LABOTEST-BB LT00454622 (E)-3-hydroxy-4-((2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl)-2-naphthoic acid Calconcarboxylic acid, indicator 3-HYDROXY-4(2-HYDROXY-4-SULFO-1-NAPHTYLAZO)NAPHTHALENE-2-CARBOXYLIC ACID INDICATOR 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, indicator grade, pure 10GR 2-Benzoyl-3-phenylacrylic acid Calconcarboxylic Acid, For complexometry 2-Naphthalenecarboxylicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]- 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]-2-Naphthalenecarboxylicacid PATTON AND REEDER INDICATOR PATTON AND REEDER'S INDICATOR PATTON AND REEDERS REAGENT PATTON AND REEDER'S REAGENT 3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-2-5-QUINOLINESULFONIC ACID 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic Acid (1:100 diluted with K2SO4) 2-HYDROXY-1-(2-HYDROXY-4-SULFO-1-NAPTHYLAZO)-3-NAPTHOIC ACID 3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPTHALAZO)-2-5-QUINOLINESULFONIC ACID CALCONCARBOXYLIC ACID extrapure AR 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid, Cal-Red(R), Patton and Reeders reagent, 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, Cal-Red(R), Calconcarboxylic acid, Patton and Reeders reagent 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, indicato PattonAndReederReagentGr-(2-Hydroxy-1-(2-Hydroxy-4-Sulpho-1-Naphthylazo3-NaphthoicAcid,CalconcarboxylicAcid,CalRed) PattonAndReederReagentGr 2,2'-Dihydroxy-4'-sulfo[1,1'-azobisnaphthalene]-3-carboxylic acid 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphtylazo)-3-naphthoic acid 2-Hydroxy-1-[(2-hydroxy-4-sulfo-1-naphtyl)azo]-3-naphthalenecarboxylic acid 3-Hydroxy-4-[(2-hydroxy-4-sulfo-1-naphtyl)azo]naphthalene-2-carboxylic acid NN【Dotite】 Calconcarboxylic acid, 94% (dry wt.), water <10% 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid,pure,indicator Calconcarboxylic acid,2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid, 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, Cal-Red, Patton and Reeder’s reagent Calconcarboxylic acid, indicator for metal titration 2-HYDROXY-1-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO-3-NAPHTHOIC ACID) HHSNNA (Cal Red) Calconcarboxylic aci 1-(2-Hydroxy-4-sulfo-1-naphthylazo)-2-hydroxy-3-naphthoic acid 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 HHSNN HHSNNA CALCONCARBOXYLIC ACID CAL RED CAL-RED(R) Kalces 2,2-dihydroxy-4-sulpho-1,1-azonaphthalene-3-carboxylic acid 2-hydroxy-1(2-hydroxy-4-sulfo-1-*naphthylazo)3-na 3-Hydroxy-4-(2-hydroxy-4-sulpho-1-naphthylazo)-2-naphthalenecarboxylic acid~Patton and Reeders CALCONCARBOXYLIC ACID, INDICATOR FOR COM PLEXOMETRY 2-HYDROXY-1(2-HYDROXY-4-SULFO-1-*NAPHTHY LAZO)3-NAPH