Toluene diisocyanate manufacturer Knowledge Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride

Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride

Naphthalene-1,4,5,8-tetracarboxylic dianhydride structural formula

Structural formula

Business number 01S2
Molecular formula C14H4O6
Molecular weight 268.18
label

NTCDA,

1,4,5,8-Naphthalenetetracarboxylic dianhydride

Numbering system

CAS number:81-30-1

MDL number:MFCD00006915

EINECS number:201-342-5

RTECS number:QK3695000

BRN number:272788

PubChem number:24886007

Physical property data

1. Character:Light yellow powder


2. Density (g/mL,25/4℃): Unsure


3. Relative vapor density (g/mL,AIR=1): Unsure


4. Melting point (ºC):220~221


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


6. Boiling point (ºC,5.2kPa): Unsure


7. Refractive index: Uncertain


8. Flash Point (ºC): Unsure


9. Specific optical rotation (º): Unsure


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


11. Vapor pressure (kPa,25ºC): Unsure


12. <SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-ascii-font-family: Arial; mso-hansi-font-family : Arial; mso, Molar volume (m3/mol):149.8


3. isotonic specific volume (90.2K):465.7


4. Surface Tension (dyne/cm):93.4


5. Polarizability10-24cm3):24.95

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 1.9

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 6

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 86.7

7. Number of heavy atoms: 20

8. Surface charge: 0

9. Complexity: 446

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 yet

Storage method

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

1,4,5,8-Naphthalic anhydride(1,4,5,8-Naphthalene tetracarboxylic dianhydride)should be stored in a cool, dark place Dry environment to prevent moisture.

Synthesis method

None yet

Purpose

Used in organic synthesis.

1,4,5,8-Naphthalic anhydride(1,4,5,8-Naphthalene tetracarboxylic dianhydride)Belongs to high-grade dyes and pigments Intermediate, mainly used in the synthesis of high-temperature resistant polymer materials, such as the production of polyimide resin.

: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial”>Naphthalene tetracarboxylic dianhydride)Should be stored in a cool, dry environment to prevent moisture.

Synthesis method

None yet

Purpose

Used in organic synthesis.

1,4,5,8-Naphthalic anhydride(1,4,5,8-Naphthalene tetracarboxylic dianhydride)Belongs to high-grade dyes and pigments Intermediate, mainly used in the synthesis of high-temperature resistant polymer materials, such as the production of polyimide resin.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.chemicalchem.com/archives/24585

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