Toluene diisocyanate manufacturer Knowledge N-2-naphthyl-3-hydroxy-2-naphthylcarboxamide

N-2-naphthyl-3-hydroxy-2-naphthylcarboxamide

N-2-naphthyl-3-hydroxy-2-naphthylcarboxamide structural formula

Structural formula

Business number 03QD
Molecular formula C21H15NO2
Molecular weight 313.35
label

Naphto AS-SW,

Naphthol AS-SW,

Naphthol AS-SW,

C.I. Ice dye coupling component 7,

3-Hydroxy-N-(2-naphthyl)-2-naphthylcarboxamide,

Ice dye coupling component 7,

aromatic compounds

Numbering system

CAS number:135-64-8

MDL number:MFCD00053488

EINECS number:205-208-7

RTECS number:None

BRN number:None

PubChem ID:None

Physical property data

None

Toxicological data

None

Ecological data

None

Molecular structure data


Molecular property data:


1 Molar refractive index98.39


2 Molar volume(m3/mol ): 234.9


3 Isotonic specific volume90.2K):669.5


4 Surface tension(3.0 dyne/cm):65.9


5 Polarizability0.5 10-24 cm3):39.00

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 5.5

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 2

5. Number of tautomers: 9

6. Topological molecule polar surface area 49.3

7. Number of heavy atoms: 24

8. Surface charge: 0

9. Complexity: 451

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

This product is in the form of beige powder with a melting point of 243-244°C. It is soluble in chlorobenzene, insoluble in water and soda ash solution, and turns yellow in sodium hydroxide solution.

Storage method

None

Synthesis method

First, 2,3-acid is salted with sodium hydroxide and chlorobenzene, and then condensed with Tobaic acid and phosphorus trichloride, and then hydrolyzed, neutralized and post-treated with sodium dihydrogen phosphate to obtain the finished product. Raw material consumption (kg/t) 2,3-acid (100%) 750 Toburic acid (100%) 900 Phosphorus trichloride (100%) 230 Soda ash (98%) 388 Chlorobenzene (98%) 410

Purpose

Mainly used as primer for dyeing and printing cotton fabrics. And can be used instead of chromic acid AS.

metcnv tcsc=”0″ numbertype=”1″ negative=”True” hasspace=”False” sourcevalue=”24″ unitname=”cm” w:st=”on”>-24cm3):39.00

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 5.5

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 2

5. Number of tautomers: 9

6. Topological molecule polar surface area 49.3

7. Number of heavy atoms: 24

8. Surface charge: 0

9. Complexity: 451

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

This product is in the form of beige powder with a melting point of 243-244°C. It is soluble in chlorobenzene, insoluble in water and soda ash solution, and turns yellow in sodium hydroxide solution.

Storage method

None

Synthesis method

First, 2,3-acid is salted with sodium hydroxide and chlorobenzene, and then condensed with Tobaic acid and phosphorus trichloride, and then hydrolyzed, neutralized and post-treated with sodium dihydrogen phosphate to obtain the finished product. Raw material consumption (kg/t) 2,3-acid (100%) 750 Toburic acid (100%) 900 Phosphorus trichloride (100%) 230 Soda ash (98%) 388 Chlorobenzene (98%) 410

Purpose

Mainly used as primer for dyeing and printing cotton fabrics. And can be used instead of chromic acid AS.

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