Sodium monosulfide

Dithioglycerol is prepared in the following manner 1,537 parts of sodium monosulfide nonahydrate and 411 parts of powdered sulfur are dissolved with stirring in 1,345 parts of water. Magnesium hydroxide is precipitated in the stirred sodium trisulfide solution by adding successively 97 parts of sodium hydroxide dissolved in 180 parts of water and then slowly 246 parts of magnesium chloride hexahydrate dissolved in 180 parts of water. The... [Pg.498]

Formula Na2S MW 78.046 forms a pentahydrate, Na2S 5H20 [1313-83-3], MW 168.12 and a nonahydrate, Na2S-9H20 [1313-84-4], MW 240.18 Synonym sodium monosulfide... [Pg.879]

Sodium Sulfide (Sodium monosulfide and Sodium sulferet). Na2S, mw 78.05 white deliq crysts, extremely hygroscopic, dissolves on exposure to air mp 920", 1180" (in vacuo) (separate values) d 1.856g/cc at 14/4°. Sol in w si sol in ethanol insol in eth. CA Registry No [1313-82-2]. Prepn from the elements in liq ammonia, dehydration of the nonahydrate, or by heating Na add sulfate with NaCl and coal above 950", extraction with w and crystn. Explds on percussion or on rapid heating. Finely divided Na sulfide forms expl mixts in air... [Pg.381]

SYNS SODIUM MONOSULFIDE SODIUM SULFIDE, anhydrous (DOT) SODIUM SULFIDE with <30% water of crystallization pOT) SODIUM SULPHIDE... [Pg.1270]

Sodium Sulfide. Sodium monosulfide sodium sulfuret. Na2S mol wt 78.05. Na 58.93%, S 41.07%. Best prepd from the elements in liq ammonia, also obtained by dehydration of the nonahydrate Courtois, Campt. Rend. 207, 1220 (1938) Klemm et al, Z Anorg. Aligem. Cheat. 241, 281 (1939) Feher in Handbook of Preparative Inorganic... [Pg.1368]

The color of the alkali polysulfides changes with increasing sulfur content from the light yellow of disulfides through orange to red or red-brown. Hexasulfides liberate sulfur when dissolved in water, which is understandable from the measurements of Amtson et al. (8) of the solubility of orthorhombic sulfur in aqueous sodium monosulfide. The equilibrium value of n in S was found to be approximately 4.8 at 25°, and varied at 50° from approximately 4.6 in dilute solutions to approximately 5.4 at higher concentrations. [Pg.240]

Sodium polysulfide is usually used in the preparation of polysulfide polymers because the sodium polysulfides are inexpensive, soluble, and stable, from the monosulfide to a rank of about 4.5. Rank is defined as the value of X in the empirical formula Na x. Caldum polysulfide can be used in making polymers of tetrasulfide and higher rank. The calcium polysulfides of ranks less than 4 are not sufficiently soluble in water. Sodium polysulfides of ranks less than 2 are best prepared by the fast reaction of warm sodium monosulfide solution with sulfur ... [Pg.985]

CAS-No [1313-82-2] disodlum monosulfide disodlum sulfide sodium monosulfide... [Pg.820]

EINECS/ELINCS 215-211-5 UN 1385 (anhyd. UN DOT) 1849 Synonyms Disodium sulfide Sodium monosulfide Sodium sulfide anhydrous... [Pg.4119]

The standard method for the synthesis of an inorganic polysulfide monomer is the reaction of anhydrous sodium monosulfide with molten sulfur (reaction 7) [4-5]... [Pg.739]

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