6-Hydroxy-2-naphthalene carboxylic acid;2-Hydroxy-6-naphthoic acid
Molecular formula: C11H8O3
Molecular formula: 188.18
CAS NO.: 16712-64-4
Properties: white or light yellow powder .Melting Point: ≥245℃.Soluble in ethanol, ethyl ether, benzene, chloroform and alkaline solution, slightly soluble in hot water, insoluble in cold water.
Quality index
|
ITEM
|
SPECIFICATION
|
TEST METHOD
|
|
Purity(%)
|
99.5% MIN
|
HPLC
|
|
2,3-HNA(%)
|
0.05 MAX
|
HPLC
|
|
2-Naphthol(%)
|
0.1 MAX
|
HPLC
|
|
2-Naphthalene Sulfonic Acid(%)
|
0.002 MAX
|
HPLC
|
|
HNDA(%)
|
0.05 MAX
|
HPLC
|
|
2,6-HNA Methyl Ester(%)
|
0.1 MAX
|
HPLC
|
|
1,1-Bi(2-Naphthol)(%)
|
0.1 MAX
|
HPLC
|
|
Melting Point(℃)
|
245-247
|
Digital Melting Apparatus
|
|
Moisture(%)
|
0.1 MAX
|
Baking Oven
|
|
Bulk Density(Kg/L)
|
0.48 MIN
|
Gravimetry
|
|
Sulfer(PPM)
|
50 MAX
|
Sulfur Analyzer
|
|
Insolubles (PPM)
|
50 MAX
|
Gravimetry
|
|
Color(APHA)
|
50 MAX
|
Colourimetry
1g in 50ml Methanol
|
|
K (PPM)
|
10 MAX
|
AAS
|
|
Na (PPM)
|
10 MAX
|
AAS
|
|
Fe (PPM)
|
10 MAX
|
AAS
|
|
Ca+Mg (PPM)
|
10 MAX
|
AAS
|
Use: this product can make engineering plastic, organic pigments, liquid crystal materials, pharmaceutical intermediates, especially the important organic synthetic materials used as heat-resistant monomer.
Package: woven bag lined plastic (2), 25kg net weight of each bag ,or with PP bags, net weight 500kg/bag or 1000kg/bag
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