ChemicalBook--->CAS DataBase List--->3737-95-9

3737-95-9

3737-95-9 Structure

3737-95-9 Structure
IdentificationMore
[Name]

Calconcarboxylic acid
[CAS]

3737-95-9
[Synonyms]

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
3-HYDROXY-4-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO)-2-5-QUINOLINESULFONIC ACID
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
CALCONCARBOXYLIC ACID
CAL RED
CAL-RED(R)
HHSNN
HHSNNA
LABOTEST-BB LT00454622
NANA
PATTON AND REEDER INDICATOR
PATTON AND REEDER'S INDICATOR
PATTON AND REEDERS REAGENT
PATTON AND REEDER'S REAGENT
2-Hydroxy[(2-hydroxy-4-sulpho-1-naphthalene)azo]naphthalene-3-carboxylicacid
2-naphthalenecarboxylicacid,3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)az
[EINECS(EC#)]

223-117-0
[Molecular Formula]

C16H12O3
[MDL Number]

MFCD00004078
[Molecular Weight]

252.26
[MOL File]

3737-95-9.mol
Chemical PropertiesBack Directory
[Appearance]

dark violet powder
[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
[Stability:]

Stable. Incompatible with strong oxidizing agents.
[Water Solubility ]

slightly soluble
[BRN ]

727492
[CAS DataBase Reference]

3737-95-9(CAS DataBase Reference)
[EPA Substance Registry System]

3737-95-9(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
[WGK Germany ]

3
[TSCA ]

Yes
[HS Code ]

29270000
Hazard InformationBack Directory
[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].
Spectrum DetailBack Directory
[Spectrum Detail]

Calconcarboxylic acid(3737-95-9)MS
Calconcarboxylic acid(3737-95-9)1HNMR
Calconcarboxylic acid(3737-95-9)13CNMR
Calconcarboxylic acid(3737-95-9)IR1
Calconcarboxylic acid(3737-95-9)IR2
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid, indicator grade, pure(3737-95-9)
[Alfa Aesar]

Calconcarboxylic acid, 94% (dry wt.), water <10%(3737-95-9)
[Sigma Aldrich]

3737-95-9(sigmaaldrich)
[TCI AMERICA]

2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic Acid  (1:100 diluted with K2SO4)(3737-95-9)
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