1,6-Dihydroxynaphthalene

Synonym(s):1,6-Naphthalenediol

CAS NO.：575-44-0
Empirical Formula: C10H8O2
Molecular Weight: 160.17
MDL number: MFCD00003981
EINECS: 209-386-7
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-21 22:41:43

What is 1,6-Dihydroxynaphthalene?

Chemical properties

Beige powder

Definition

ChEBI: Naphthalene-1,6-diol is a naphthalenediol.

Synthesis

1,6-Naphthalenediol [575-44-0], mp 138℃, is synthesized by caustic fusion of naphthalene1,6-disulfonic acid at 330 C. It couples with diazotized anilines to form disazo and trisazo derivatives.

Purification Methods

Crystallise it from *benzene or *benzene/EtOH after treatment with charcoal. [Beilstein 6 IV 6557.]

Properties of 1,6-Dihydroxynaphthalene

Melting point:	130-133 °C (lit.)
Boiling point:	246.06°C (rough estimate)
Density	1.0924 (rough estimate)
refractive index	1.5418 (estimate)
storage temp.	Sealed in dry,Room Temperature
solubility	very faint turbidity in Methanol
pka	9.26±0.40(Predicted)
form	Powder or Crystalline Powder
color	White to brown
BRN	1939032
CAS DataBase Reference	575-44-0(CAS DataBase Reference)
NIST Chemistry Reference	1,6-Naphthalenediol(575-44-0)
EPA Substance Registry System	1,6-Naphthalenediol (575-44-0)

Safety information for 1,6-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.