Fast red ITR color base

Structural formula

Business number	02C1
Molecular formula	C11H18N2O3S
Molecular weight	258.34
label	Azoic Diazo No. 42

Numbering system

CAS number:97-35-8

MDL number:MFCD00009045

EINECS number:202-575-5

RTECS number:None

BRN number:None

PubChem number:24852003

Physical property data

1. Properties: White uniform powder.

2. Density (g/mL, 20℃): Undetermined

3. Relative vapor density (g/mL, air=1): Undetermined

4. Melting point (ºC): 102-105

5. Boiling point (ºC, normal pressure): Undetermined

6. Boiling point (ºC, kPa): Undetermined

7. Refractive index: Undetermined

8. Flash point (ºC): Undetermined

9. Specific rotation (º): Undetermined

10. Autoignition point or ignition temperature (ºC): Not determined

11. Vapor pressure (mmHg, 20.2ºC): Not determined

12. Saturated vapor Pressure (kPa, ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) distribution coefficient: Undetermined

17. Explosion upper limit (%, V/V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Insoluble in water, soluble in hydrochloric acid and sulfuric acid.

Toxicological data

None

Ecological data

None

Molecular structure data

1. Molar refractive index: 67.95

2. Molar volume (cm³/mol): 214.2

3. Isotonic specific volume (90.2K ): 556.4

4. Surface tension (dyne/cm): 45.4

5. Polarizability (10-24cm3): 26.93

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 1

3. Number of hydrogen bond acceptors: 5

4. Number of rotatable chemical bonds: 5

5. Number of tautomers: none

6. Topological molecule polar surface area 81

7. Number of heavy atoms: 17

8. Surface charge: 0

9. Complexity: 322

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

None

Storage method

None

Synthesis method

Using o-aminoanisole as raw material, it is first acylated with acetic anhydride, chlorosulfonated with chlorosulfonic acid, condensed with diethylamine, and then hydrolyzed with sodium hydroxide. Raw material consumption (kg/t) o-acetamidoanisole (100%) 425 diethylamine (100%) 180 chlorosulfonic acid 1800 caustic soda (50%) 170 hydrochloric acid (31%) 120

Purpose

It is mainly used for dyeing and printing cotton and viscose fabrics. It is the only light pink light-fast dye among ice dyes. It can replace soluble reduced pink IR (indigosol pink IR) and bright red base. It can also be used for printing and dyeing silk and nylon fabrics.