Detail of "831-59-4"

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CAS Number:
831-59-4
Name:
1,3-Benzenedisulfonicacid, sodium salt (1:2)
Molecular Structure:
Formula:
C₆H₄Na₂O₆S₂
Molecular Weight:
282.2
Deleted CAS:
156499-11-5
Synonyms:
1,3-Benzenedisulfonicacid, disodium salt (9CI);m-Benzenedisulfonic acid, disodium salt (8CI);Disodium 1,3-benzenedisulfonate;Disodium benzene-1,3-disulfonic acid;Disodiumm-benzenedisulfonate;
EINECS:
212-606-4
Density:
1.124 g/cm³
Hazard Symbols:
Xi,Xn
Risk Codes:
36/37/38-20/21/22
Safety:
26-36 Details

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1,3-BENZENEDISULFONIC ACID DISODIUM SALT

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Neutralizing arenesulfonate alkali fusion mixtures: Neutralizing arenesulfonate alkali fusion mixtures. Takahashi, Shigenobu; Wada, Mitsuhiro; Furikado, Kazuaki; Kotera, Norio (Sumitomo Chemical Co., Ltd.; Taska Dyestuffs Mfg. Co., Ltd., Japan). Japan. Kokai JP 51056419 18 May 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C039-08. APPLICATION: JP 74-130769 12 Nov 1974. DOCUMENT TYPE: Patent CA Section: 25 (Noncondensed Aromatic Compounds) Powd. alkali fusion mixts. of arenesulfonate salts were neutralized with acid gas and H2O so that the mixt. remains powdery.Several substances with their cas registry numbers 831-59-4 and 108-46-3 may be metioned in this study. This facilitates recovery of the phenols and inorg. by-products. Thus, 2.9 g/min SO2 was passed through H2O at 70.degree. and the moist gas introduced to 300 g powd. alkali fusion mixt. of m-C6H4(SO3Na)2 for 1 hr with stirring. Extn. with hot iso-BuCOMe gave 63 g resorcinol, vs. 60.5 g for neutralization and extn. in aq. soln. .