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1,5-Naphthalenedisulfonic acid

Basic information Safety Supplier Related

1,5-Naphthalenedisulfonic acid Basic information

Product Name:
1,5-Naphthalenedisulfonic acid
Synonyms:
  • Naphthalene-1,5-disulfonic acid tetrahydrate
  • 1,5-disulfonic acid
  • 5-Naphthalenedisulfonic acid
  • 29685
  • Naphthalin-1,5-disulfonsure
  • 1,5-phthalenedisulfonic acid
  • NAPHTHALENE-1,5-DISULFONIC ACID DISODIUM SALT
  • naphthalene-1,5-disulphonic acid
CAS:
81-04-9
MF:
C10H8O6S2
MW:
288.3
EINECS:
216-732-0
Product Categories:
  • Intermediates of Dyes and Pigments
  • Organic acids
Mol File:
81-04-9.mol
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1,5-Naphthalenedisulfonic acid Chemical Properties

Melting point:
242.5°C (rough estimate)
Boiling point:
400.53°C (rough estimate)
Density 
1.7040
refractive index 
1.5630 (estimate)
pka
-0.60±0.40(Predicted)
color 
Crystals or plates
CAS DataBase Reference
81-04-9(CAS DataBase Reference)
EPA Substance Registry System
1,5-Naphthalenedisulfonic acid (81-04-9)
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Safety Information

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
22-24/25-45-36/37/39-26
RIDADR 
UN 2585
WGK Germany 
1
HazardClass 
8
PackingGroup 
III
Toxicity
LD50 orl-rat: 30 g/kg GISAAA 45(3),73,80

MSDS

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1,5-Naphthalenedisulfonic acid Usage And Synthesis

Chemical Properties

White powder

Safety Profile

Very low oral toxicity. Whenheated to decomposition it emits toxic fumes of SOx. Seealso SULFONATES.

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