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α-Naphtholphthalein

SIGMA/N8257 - practical grade

Synonym: 1-Naphtholphthalein; 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one

CAS Number: 596-01-0
Empirical Formula (Hill Notation): C28H18O4
Molecular Weight: 418.44
EC Number: 209-875-5
MDL Number: MFCD00036202
Linear Formula: C28H18O4
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-N8257-1G 1 g
 $127.00
1/EA		 Add To Favorites
45-N8257-5G 5 g
 $419.00
1/EA		 Add To Favorites
45-N8257-10G 10 g
 $686.00
1/EA		 Add To Favorites

 

application(s) diagnostic assay manufacturing
hematology
histology
assay >80% NaOH basis (titration)
form powder
grade practical grade
InChI 1S/C28H18O4/c29-25-15-13-23(17-7-1-3-9-19(17)25)28(22-12-6-5-11-21(22)27(31)32-28)24-14-16-26(30)20-10-4-2-8-18(20)24/h1-16,29-30H
InChI key HQHBAGKIEAOSNM-UHFFFAOYSA-N
mp 238-240 °C (lit.)
pH 7.3-8.7, colorless to blue-green
Quality Level 200 
SMILES string Oc1ccc(c2ccccc12)C3(OC(=O)c4ccccc34)c5ccc(O)c6ccccc56
solubility ethanol: 50 mg/mL, clear, red-orange
storage temp. room temp
technique(s) titration: suitable
General description: α-Naphtholphthalein, a phthalein dye is a pH indicator between 7.3 (colorless) and 8.7 (greenish-blue). Applications include inks, markers, detecting viable cells, food storage, and many more.
Packaging: 1, 5, 10 g in poly bottle
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36
RIDADR NONH for all modes of transport
WGK Germany WGK 3
Flash Point(F) Not applicable
Flash Point(C) Not applicable
Purity >80% NaOH basis (titration)
mp 238-240 °C (lit.)
Storage Temp. room temp
UNSPSC 12171500

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