3-Hydroxy-2-naphthoic acid 98%

Supplier: Thermo Scientific
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Synonyms: 3-Hydroxy-naphthalene-2-carboxylic acid, 2-Hydroxy-3-naphthoic acid

121610010 121610050 121611000
ACRO121610010EA 184 GBP
ACRO121610010 ACRO121610050 ACRO121611000
3-Hydroxy-2-naphthoic acid 98%
3-Hydroxy-2-naphthoic acid
Formula: C₁₁H₈O₃
MW: 188,18 g/mol
Boiling Pt: 368 °C (1013 hPa)
Melting Pt: 217…223 °C
Flash Pt: >150 °C
MDL Number: MFCD00004103
CAS Number: 92-70-6
EINECS: 202-180-8
Merck Index: 13,04860

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Specification Test Results

Appearance Yellow to beige to light brown Crystalline powder
Infrared spectrum Conforms
Melting point 217 to 223 °C (Dec)
Titration with NaOH ≥97.5 %
Residue after evaporation ≤0.002 %
Acidity/alkalinity ≤0.0001 meq/g
Calcium (Ca) ≤0.5 ppm
Copper (Cu) ≤0.05 ppm
Iron (Fe) ≤0.1 ppm
Lead (Pb) ≤0.05 ppm
Magnesium (Mg) ≤0.2 ppm
Potassium (K) ≤0.5 ppm
Sodium (Na) ≤0.5 ppm
Zinc (Zn) ≤0.1 ppm
Impurity ≤1 % n-Propyl benzene
Benzene ≤0.05 %
KMnO4-reducing substance ≤5 ppm (O)
Total phosphorus (P) ≤0.1 ppm
Total silicon (Si) ≤0.05 ppm
Total sulfur (S) ≤2 ppm

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