Calconcarboxylic acid, Thermo Scientific Chemicals

Description

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

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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

Solubility
Soluble in water, ethanol, sodium hydroxide and methanol.

Notes
Incompatible with strong oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 3737-95-9
• Molecular Formula: C21H14N2O7S
• Molecular Weight (g/mol): 438.41
• MDL Number: MFCD00004078
• InChI Key: ULIVOAKVRBXKKS-PYCFMQQDSA-N
• Synonym: calconcarboxylic acid, patton-reeder indicator, calconcarbonic acid, calcon 3-carboxylic acid, patton and reeder's indicator, 2-hydroxy-1-2-hydroxy-4-sulfo-1-napthylazo-3-naphthoic acid, 2,2'-dihydroxy-4'-sulpho-1,1'-azonaphthalene-3-carboxylic acid, 2-naphthalenecarboxylic acid, 3-hydroxy-4-2-hydroxy-4-sulfo-1-naphthalenyl azo, nn
• PubChem CID: 5895210
• IUPAC Name: 3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2-carboxylic acid
• SMILES: C1=CC=C2C(=C1)C=C(C(=C2NN=C3C4=CC=CC=C4C(=CC3=O)S(=O)(=O)O)O)C(=O)O

• Melting Point: ∼300°C (decomposition)
• Quantity: 50 g
• Beilstein: 727492
• Solubility Information: Soluble in water,ethanol,sodium hydroxide and methanol.
• Formula Weight: 438.42
• Chemical Name or Material: Calconcarboxylic acid

Safety and Handling

Product Identifier

• Calconcarboxylic acid, 94% (dry wt.), water <10%

Signal Word

• Warning

Hazard Category

• Serious eye damage/eye irritation Category 2
• Specific target organ toxicity Category 3
• Skin corrosion/irritation Category 2

Hazard Statement

• H315-Causes skin irritation.
• H319-Causes serious eye irritation.
• H335-May cause respiratory irritation.

Precautionary Statement

• P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P405-Store locked up.
• P501-Dispose of contents/container to in accordance with local/regional/national/international regulations..

RUO – Research Use Only