HYPOSULPHITE OF SODA  , the name originally given to the substance known in See also:

• CHEMISTRY
• CHEMISTRY (formerly "chymistry"; Gr. xvµela; for derivation see ALCHEMY)

chemistry as See also:

• SODIUM [symbol Na, from Lat. natrium; atomic weight 23.00 (0=16)]

sodium thiosulphate, Na2S2Oa ; the earlier name is still commonly used, especially by photographers, who employ this chemical as a fixer . In systematic chemistry, sodium hyposulphite is a See also:

• SALT (a common Teutonic word, cf. Dutch zout, Ger. Salz, Scand. salt; cognate with Gr. &Xs, Lat. sal)
• SALT, SIR TITUS, BART

salt of hyposulphurous See also:

• ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid, to which See also:

• SCHUTZENBERGER, PAUL (1829–1897)

Schutzenberger gave the See also:

• FORMULA
• FORMULA (Lat. diminutive of forma, shape, pattern, &c., especially used of rules of judicial procedure)

formula H2SO2, but which Bernthsen showed to be H2S_04 .