Toluene diisocyanate manufacturer Knowledge 1-Amino-2,4-dibromoanthraquinone 1-Amino-2,4-dibromoanthraquinone

1-Amino-2,4-dibromoanthraquinone 1-Amino-2,4-dibromoanthraquinone

1-amino-2,4-dibromoanthraquinone structural formula

Structural formula

Business number 01S7
Molecular formula C14H7Br2NO2
Molecular weight 381.02
label

None yet

Numbering system

CAS number:81-49-2

MDL number:MFCD00019155

EINECS number:201-354-0

RTECS number:None

BRN number:None

PubChem ID:None

Physical property data

1. Appearance: red powder

2. Density (g/mL, 25/4℃): Uncertain

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

4. Melting point (ºC): 226

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

6. Boiling point (ºC, 5.2kPa): Uncertain

7. Refractive index: Uncertain

8. Flash point (ºC): Uncertain

9. Ratio Optical rotation (º): Uncertain

10. Autoignition point or ignition temperature (ºC): Uncertain

11. Vapor pressure (kPa, 25ºC): Uncertain

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12. Saturated vapor pressure (kPa, 60ºC): Uncertain

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

14. Critical temperature (ºC ): Uncertain

15. Critical pressure (KPa): Uncertain

16. Log value of oil-water (octanol/water) partition coefficient: Uncertain

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

18. Explosion lower limit (%, V/V): Uncertain

19. Solubility: Slight Dissolved in water.

Toxicological data

1. Teratogenicity

Salmonella: 333 ug/plate

Rat: 329 gm/kg/39W;

2. Neurotoxicity

Rabbit eye test: 500mg/24H;

3. Other multiple dose toxicity data

Rat caliber TDL0: 130500mg/kg/90D-C

Mouse caliber TDL0: 42075mg/kg/90D-C

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 74.83

2. Molar volume (cm3/mol): 179.8

3. Isotonic specific volume (90.2K ): 541.7

4. Surface tension (dyne/cm): 82.4

5. Polarizability (10-24cm3): 29.66

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 4.1

2. Number of hydrogen bond donors: 1

3. Number of hydrogen bond acceptors: 3

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: 3

6. Topological molecule polar surface area 60.2

7. Number of heavy atoms: 19

8. Surface charge: 0

9. Complexity: 414

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determined number of chemical bond stereocenters: 0

14. Uncertain number of chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

None yet

Storage method

This product should be sealed and stored in a dry and dark place.

Synthesis method

First stir 1-aminoanthraquinone and water in a pot, grind them into colloids, then add them to the bromination pot, and add water to adjust the volume. Then add 30% hydrochloric acid and bromine, stir for 1 hour, and slowly add 10% sodium hypochlorite solution. Raise the temperature to 50°C in 2 hours, keep it warm for 2 hours, raise the temperature to 80°C within 3 hours, and keep the reaction until the end point (the measured melting point is above 220°C.). Add 10% sodium bisulfite solution, cool to below 50°C, filter, wash until neutral, and dry. When 50.17kg of 1-aminoanthraquinone and 48kg of bromine are added to each batch, 81.45kg of 1-amino-2,4-dibromoanthraquinone can be obtained.

Purpose

Intermediates for dyes and other organic chemical raw materials.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/24676

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