1,5-Dihydroxynaphthalene 1,5-Dihydroxynaphthalene

Structural formula

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

Numbering system

CAS number:83-56-7

MDL number:MFCD00003980

EINECS number:201-487-4

RTECS number:QJ4740000

BRN number:2044951

PubChem number:24893367

Physical property data

1. Characteristics: white needle-like crystals.

2. Density (g/mL,25/4℃): Unsure

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

4. Melting point (ºC): 265 ℃

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

6. Boiling point (ºC,5.2kPa): Unsure

7. Refractive index: Uncertain

8. Flashpoint (ºC): 252℃

9. Specific optical rotation (º): Unsure.

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

11. Vapor pressure (kPa,25ºC): Unsure

12. Saturated vapor pressure (kPa,60ºC3. isotonic ratio (90.2K):341.1

4. Surface Tension (dyne/cm):64.4

5. Polarizability（10^-24cm³):18.97

Compute chemical data

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

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: 3

6. Topological molecule polar surface area 40.5

7. Number of heavy atoms: 12

8. Surface charge: 0

9. Complexity: 140

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 in Store in a cool and dry place.

Synthesis method

By1,5- Naphthalenedisulfonic acid is obtained by alkali fusion and acidification. Heat the sodium hydroxide solution to290℃, add while stirring1,5-Naphthalenedisulfonic acid, in280-300After adding the temperature between ℃, continue stirring30min . Cool and acidify with hydrochloric acid to pH6-7. Cool, filter and refine to obtain1,5-Dihydroxynaphthalene.

Purpose

For organic synthesis, Dye intermediates, pharmaceutical intermediates, photographic industry.

rial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>℃, add while stirring1,5-Naphthalenedisulfonic acid, in280-300After adding between ℃, continue stirring30min. Cool and acidify with hydrochloric acid to pH6-7. Cool, filter and refine to obtain1,5-Dihydroxynaphthalene.

Purpose

For organic synthesis, Dye intermediates, pharmaceutical intermediates, photographic industry.