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104595 Calconcarboxylic acid

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Key Spec Table

CAS #EC NumberHill FormulaMolar Mass
3737-95-9223-117-0C₂₁H₁₄N₂O₇S * 2 H₂O474.45 g/mol


Catalogue NumberPackaging Qty/Pack
1045950005 Glass bottle 5 g
1045950025 Glass bottle 25 g
Catalogue Number104595
SynonymsPatton and Reeders Reagent, 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-naphthalene-3-carboxylic acid
Product Information
CAS number3737-95-9
EC number223-117-0
Hill FormulaC₂₁H₁₄N₂O₇S * 2 H₂O
Molar Mass474.45 g/mol
HS Code2927 00 29
Structure formula ImageStructure formula Image
Quality LevelMQ200
Biological Information
Physicochemical Information
Melting Point300 °C
Bulk density400 kg/m3
Solubility8 g/l
Materials Information
Toxicological Information
Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Statement(s)H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
Precautionary Statement(s)P261: Avoid breathing dust.
P264: Wash skin thoroughly after handling.
P271: Use only outdoors or in a well-ventilated area.
P280: Wear protective gloves/ eye protection/ face protection.
P302 + P352: IF ON SKIN: Wash with plenty of water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal WordWarning
Storage class10 - 13 Other liquids and solids
WGKWGK 3 highly hazardous to water
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Safety Information
Product Usage Statements
Storage and Shipping Information
StorageStore at +5°C to +30°C.
Packaging Information
Transport Information
Supplemental Information
Identity (UV/VIS-Spectrum)passes test
Appearance of solution (0.1 g/l; ethanol)passes test
Absorption maximum λmax. (Ethanol)569 - 572 nm
Spec. Absorptivity A 1%/1cm (λmax.; 0.025 g/l; ethanol; calc. on water free substance)≥ 250
Water (according to Karl Fischer)≤ 9 %
Suitability as indicator (for metal titration)passes test
Global Trade Item Number
Catalogue Number GTIN
1045950005 04022536053202
1045950025 04022536053219