Sodium 2-naphthalene sulphonate

Prepared commercially by NaOH fusion of sodium naphthalene-2-sulphonate. [Pg.270]

Sodium naphthalene sulphonate, formaldehyde condensate Concentration % 40... [Pg.26]

Sodium naphthalene sulphonate formaldehyde condensate Concentration % 92... [Pg.27]

Sodium naphthalene sulphonate Potassium chloride fert-Dodecyl mercaptan p-Menthane hydroperoxide Ferrous sulphate (FeS04-7H20) Ethylenediamine tetraacetic acid sodium salt Sodium formaldehyde sulphoxylate... [Pg.478]

Usually prepared on the large scale by caustic soda fusion of sodium naphthalene-1-sulphonate, but can also be obtained by high-temperature alkaline digestion of... [Pg.270]

The sulphonation of toluene at 100-120° results in the formation of p-toluene-sulphonic acid as the chief product, accompanied by small amounts of the ortho and meta isomers these are easily removed by crystallisation in the presence of sodium chloride. Sulphonation of naphthalene at about 160° 3uelds largely the p-sulphonic acid at lower temperatures (0-60°) the a-siil-phonic acid is produced almost exclusively. [Pg.548]

Materials required 70 g. (0-3 mole) of sodium naphthalene-/3-sulphonate,2 210 g. of sodium hydroxide, 20 c.c. of water. [Pg.239]

Naphthol Yellow S (citronin A, flavianic acid sodium salt, 8-hydroxy-5,7-dinitro-2-naphthalene sulphonic acid disodium salt) [846-70-8] M 358.2, dec on heating. Greenish yellow powder soluble in H2O. The free sulphonic acid can be recrystd from dil HCl (m 150°) or AcOH-EtOAc (m 148-149.5°). The disodium salt is then obtained by dissolving the acid in two equivalentss of aqueous NaOH and evaporating to dryness and drying the residue in a vacuum desiccator. The sodium salt can be recrystd from the minimum volume of H2O or from EtOH [Dermer and Dermer JACS 61 3302 1939]. [Pg.281]

Naphthalene sulphonyl chloride is prepared in a similar manner from sodium j8-naphthalene sulphonate. (A., 275, 233.)... [Pg.425]

The sulphonation of toluene (Expt 6.37) with concentrated sulphuric acid at 100-120°C results in the formation of toluene-p-sulphonic acid as the chief product, accompanied by small amounts of the ortho and meta isomers these are easily removed by crystallisation of the sodium salt of the para isomer in the presence of sodium chloride. Sulphonation of naphthalene at about 160°C yields largely the 2-sulphonic acid (the product of thermodynamic control) (Expt 6.38) at lower temperatures (0-60 °C) the 1-sulphonic acid (the product of kinetic control) is produced almost exclusively. In both cases the product is isolated as its sodium salt. In anthraquinone the carbonyl groups deactivate the aromatic nucleus towards electrophilic attack and vigorous conditions of sulphonation are required, i.e. oleum at about 160 °C. The product is largely sodium anthraquinone-2-sulphonate (Expt 6.39). [Pg.874]

Wettable powders Sodium di-alkyl naphthalene Sulphonates Fatty alcohol ethoxylates Wetting agents... [Pg.8]

Polymethyl naphthalene sulphonate sodium salt dispersant with very low free sulphate content. [Pg.616]

Naphthalene sulphonate Naphthalene sulfonate, sodium STOKORON Stockhausen... [Pg.662]

Polyglycol mono oleate Polyhydrocarboxylic acid salt Polymeric alcohol blend Polymeric blend Polymethyl naphthalene sulphonate sodium salt Polyolefin... [Pg.666]

Example ft-Naphthol from Sodium-0-Naphthalene Sulphonate and Sodium Hydroxide1... [Pg.264]

In order to convert sodium-/3-naphthalene sulphonate into /S-naphthol the proportions of the necessary reagents used are ... [Pg.264]

All the systems described thus far require relatively high salinity, which is considered to be critical in soil remediation processes [60]. Another approach for effective microemulsification of organic liquids is the use of co-surfactants. Sodium mono- and dimethyl naphthalene sulphonate were found to be effective co-surfactants in formulations with Aerosol OT (sodium bis(2-ethylhexyl) sulphosuccinate) for diverse chlorinated hydrocarbons and their mixtures between 15 and 25°C [60, 61]. All types of microemulsions could be obtained with this approach. [Pg.308]

Aerosol NS 1-Naphthalenesulfonlc acid, sodium salt EINECS 204-976-0 a-Naphthalenesulfonic acid sodium salt NSC 37036 a salt Sodium a-naphthalenesulfonate Sodium a-naphthalenesulfonic acid Sodium 1-naphthalenesulfonate Sodium naphthalene-1-sulphonate. Dispersant for pigments, extenders and fillers. Usable in aqueous media over a wide pH range. Am. Cyanamid. [Pg.570]

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