Naphthalene-2,6-disulfonic acid

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Naphthalene-2,6-disulfonic acid Basic information
Product Name:Naphthalene-2,6-disulfonic acid
Synonyms:Naphthalene-2,6-bissulfonic acid;2,6-NAPHTHALENE DISULFONIC ACID;Naphthalene-2,6-disulfonic acid;naphthalene-2,6-disulphonic acid;Naphthalene-2,6-disulfonic;Naphthalene-2,6-disulfonic acid(581-75-9)
CAS:581-75-9
MF:C10H8O6S2
MW:288.3
EINECS:209-471-9
Product Categories:Intermediates of Dyes and Pigments
Mol File:581-75-9.mol
Naphthalene-2,6-disulfonic acid Structure
Naphthalene-2,6-disulfonic acid Chemical Properties
density 1.704±0.06 g/cm3(Predicted)
storage temp. 2-8°C
pka-0.41±0.40(Predicted)
CAS DataBase Reference581-75-9(CAS DataBase Reference)
EPA Substance Registry System2,6-Naphthalenedisulfonic acid (581-75-9)
Safety Information
RIDADR 1759
TSCA TSCA listed
HazardClass 8
PackingGroup III
HS Code 2904100090
MSDS Information
Naphthalene-2,6-disulfonic acid Usage And Synthesis
UsesNaphthalene-2,6-disulfonic Acid can be used in in geothermal reservoirs as new fluorescent tracers.
Production MethodsNaphthalene is added to sulfuric acid – monohydrate (SO3 H2O) mixture at 135 ℃, and the reaction is completed by heating at 170 – 175 ℃ for 5 h. After quenching in water, the disodium salt of Naphthalene-2,6-disulfonic acid is precipitated at 90 C by adding sodium chloride and sodium sulfate. Filtration at 95℃ followed by washing with sodium sulfate solution gives the required product, free from the 2,7-isomer, in 21 % yield. The 2,7-isomer is then isolated from the filtrates.
DefinitionChEBI: Naphthalene-2,6-disulfonic acid is a naphthalenesulfonic acid.
Naphthalene-2,6-disulfonic acid Preparation Products And Raw materials
Raw materialsNaphthalene-2,6-disulfonic acid-->Melibiose-->Naphthalene-->Sodium chloride-->Sodium sulfate
Preparation Products2,6-Naphthalenedisulfonyl chloride
Tag:Naphthalene-2,6-disulfonic acid(581-75-9) Related Product Information
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