Calconcarboxylic acid , Indicator , 3737-95-9

Synonym(s):
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;Patton and Reeder’s reagent

CAS NO.：3737-95-9

Empirical Formula: C21H14N2O7S

Molecular Weight: 438.41

MDL number: MFCD00004078

EINECS: 223-117-0

PRODUCT Properties

• Melting point: 300 °C(lit.)
• Density: 1.60±0.1 g/cm3(Predicted)
• bulk density: 400kg/m3
• storage temp.: room temp
• solubility: 1 M NaOH: 10mg/mL
• 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.
• Major Application: diagnostic assay manufacturing; hematology; histology
• InChI: 1S/C21H14N2O7S/c24-16-10-17(31(28,29)30)13-7-3-4-8-14(13)18(16)22-23-19-12-6-2-1-5-11(12)9-15(20(19)25)21(26)27/h1-10,24-25H,(H,26,27)(H,28,29,30)/b23-22-
• InChIKey: MVQBFZXBLLMXGS-FCQUAONHSA-N
• SMILES: OC(=O)c1cc2ccccc2c(N=Nc3c(O)cc(c4ccccc34)S(O)(=O)=O)c1O
• 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)

Description and Uses

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

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P261-P264-P271-P280-P302+P352-P305+P351+P338
• target organs: Respiratory system
• PPE: dust mask type N95 (US), Eyeshields, Gloves
• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 3
• TSCA: TSCA listed
• HS Code: 29270000
• Storage Class: 11 - Combustible Solids
• Hazard Classifications: Eye Irrit. 2; Skin Irrit. 2; STOT SE 3