Isatoic anhydride

Isatoic anhydride structural formula

Structural formula

Business number 039U
Molecular formula C8H5NO3
Molecular weight 163.13
label

3,1-Benzoxazine-2,4(1H)-dione,

Anthranilic acid N-carboxylic acid anhydride,

Fragrance

Numbering system

CAS number:118-48-9

MDL number:MFCD00006700

EINECS number:204-255-0

RTECS number:DM3100000

BRN number:136786

PubChem number:24895927

Physical property data

1. Characteristics: White prismatic crystals.


2. Density (g/mL,25) : Undetermined


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


4. Melting point (ºC): 243 (decomposed).


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


6. Boiling point (ºC, KPa): Undetermined


7. Refractive index: Undetermined


8. Flashpoint (ºC): Undetermined


9. Specific optical rotation (º): Undetermined


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


11. Vapor pressure (mmHg, ºC): Undetermined


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. Oil and water (octanol/Log value of the partition coefficient for water: undetermined


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


12


8. Surface charge :0


9. Complexity :226


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 stereocenters of chemical bonds:0


14. Uncertain number of chemical bond stereocenters:0


15. Number of covalent bond units: 1



Properties and stability

Stable at room temperature and pressure, avoid contact with strong oxidants and moisture.

Storage method

Stored in a cool, ventilated warehouse. Keep away from fire and water sources. should be kept away from oxidizer, do not store together. Equipped with the appropriate variety and quantity of fire equipment. Suitable materials should be available in the storage area to contain spills.

Synthesis method

Originated from the reaction of anthranilic acid and phosgene. Dissolve anthranilic acid in hot water and concentrated hydrochloric acid, add phosgene while stirring, and isatoic anhydride will precipitate immediately. The reaction releases heat, adjust the phosgene introduction speed so that the temperature does not exceed 50. Continuously pass phosgene 2-4h until the absorption speed slows down significantly. Dry the product in the air at 100Dry to get the finished product.

Purpose

Used as a raw material for medicines, pesticides, and dyes, and an important intermediate for the herbicide bendasone.

�Number of stereocenters:0


15. Number of covalent bond units: 1



Properties and stability

Stable at room temperature and pressure, avoid contact with strong oxidants and moisture.

Storage method

Stored in a cool, ventilated warehouse. Keep away from fire and water sources. should be kept away from oxidizer, do not store together. Equipped with the appropriate variety and quantity of fire equipment. Suitable materials should be available in the storage area to contain spills.

Synthesis method

Originated from the reaction of anthranilic acid and phosgene. Dissolve anthranilic acid in hot water and concentrated hydrochloric acid, add phosgene while stirring, and isatoic anhydride will precipitate immediately. The reaction releases heat, adjust the phosgene introduction speed so that the temperature does not exceed 50. Continuously pass phosgene 2-4h until the absorption speed slows down significantly. Dry the product in the air at 100Dry to get the finished product.

Purpose

Used as a raw material for medicines, pesticides, and dyes, and an important intermediate for the herbicide bendasone.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.polyether-factory.com/archives/18507

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