2,7-Dihydroxynaphthalene

Synonym(s):2,7-Dihydroxynaphthalene;2,7-Naphthalenediol

CAS NO.：582-17-2
Empirical Formula: C10H8O2
Molecular Weight: 160.17
MDL number: MFCD00004085
EINECS: 209-478-7
SAFETY DATA SHEET (SDS)
Update Date: 2024-10-24 21:11:45

What is 2,7-Dihydroxynaphthalene?

Chemical properties

Light yellow to grey needle crystal

The Uses of 2,7-Dihydroxynaphthalene

2,7-Dihydroxynaphthalene can be used as starting material for the synthesis of sulfonic acids and divinylnaphthalenes.

The Uses of 2,7-Dihydroxynaphthalene

2,7-Dihydroxynaphthalene is a reagent used in the preparation of monomers of high carbon materials. Also used in the synthesis of splitomicin analogues.

The Uses of 2,7-Dihydroxynaphthalene

2,7-Naphthalenediol is a reagent used in the preparation of monomers of high carbon materials. Also used in the synthesis of splitomicin analogues.

Synthesis

2,7-Naphthalenediol [582-17-2], mp 194℃, is produced by caustic fusion of naphthalene-2,7- disulfonic acid or 2-hydroxynaphthalene-7-sulfonic acid at 300℃. It undergoes amination at 250℃ to give 2,7-naphthalenediamine and couples with diazotized anilines in the 1-position or in the 1,8-positions. It forms a resin with formaldehyde.

Properties of 2,7-Dihydroxynaphthalene

Melting point:	185-190 °C (lit.)
Boiling point:	246.06°C (rough estimate)
Density	1.0924 (rough estimate)
refractive index	1.5418 (estimate)
storage temp.	Store below +30°C.
solubility	DMSO (Slightly), Methanol (Slightly)
form	Powder
pka	9.14±0.40(Predicted)
color	Gray
Water Solubility	insoluble
BRN	2042383
CAS DataBase Reference	582-17-2(CAS DataBase Reference)
NIST Chemistry Reference	2,7-Naphthalenediol(582-17-2)
EPA Substance Registry System	2,7-Naphthalenediol (582-17-2)

Safety information for 2,7-Dihydroxynaphthalene

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.