Sodium saccharinate

Sodium saccharinate ;
Names:	sodium saccharinate; sodium saccharin; sodium salt of saccharine; saccharin; Е954 food additive; sodium 3-oxo-3H-benzoisothiazol-2-ide 1,1-dioxide;
Formula:	C7H4NaNO3S (anhydrous); C7H4NaNO3S · 2H2O (dihydrate);
Molar mass:	205.168 g/mol (anhydrous); 241.198 g/mol (dihydrate);
Shapes:	https://en.crystalls.info/w/uploads/media/b/bc/Rhombic_prism.json Rhombic prism ;
Color:	colorless;
Optical properties:	birefringence;
Stability:	quickly dehydrates (dihydrate);
Toxicity:	non-toxic

Description

Organic compound, salt of alkaline metal sodium and saccharin. Sweetener, ~300 times sweeter than sugar. From water solutions crystallizes as dihydrate.

Where to buy

Can be bought in grocery store (sweeteners based on sodium cyclamate, mixture of 90% of sodium cyclamate and 10% of sodium saccharinate) and online store.

Add mixture of sodium cyclamate and sodium saccharinate to the flask with boiling water until solution become saturated. Then filter out the solution and cool slowly. Excess of sodium cyclamate forms a crystalline precipitate, when most of sodium saccharinate remain in the solution.

Separate this precipitate from the stock solution, add another portion of mixture, and repeat this process several times, using the same solution again and again. At the end, you'll get a precipitated sodium cyclamate and solution with accumulated sodium saccharinate.

Reaction between acid saccharin and sodium hydroxide, carbonate or hydrocarbonate

Chemical equation:

C₇H₅NO₃S + NaOH = C₇H₄NaNO₃S + H₂O

2C₇H₅NO₃S + Na₂CO₃ = 2C₇H₄NaNO₃S + H₂O + CO₂↑

C₇H₅NO₃S + NaHCO₃ = C₇H₄NaNO₃S + H₂O + CO₂↑

For preparation of 100.00g of sodium saccharinate

dihydratedihydrate
anhydrous

а 75.95g of saccharin and 16.58g of sodium hydroxide or 21.97g of sodium carbonate or 34.83g of sodium hydrocarbonate is required.

Add acid to the flask, then add small parts of sodium compound with stirring until it will totally dissolve or, if you use carbonate, until carbon dioxide emission will stop.

Notes

Both sodium saccharin and acid saccharin can be referred as "saccharin". But in most cases this name means sodium saccharin, as it has much higher solubility in water.
Dehydrates in several days.

Storage conditions

For crystal storing use hermetic vessel with wadding moistened with such solution near the crystal. You can use such alternatives as vessel with vaseline or vegetable oil, organic non-hygroscopic solvent (kerosene or liquid paraffin). Also you can use acrylate polymer or another kinds of solidifying plastic.

Solubility

TableGraph

Temperature	g/`100,00` g water	g/`100,00` g ethanol 90%	g/`100,00` g ethylene glycol	g/`100,00` g propylene glycol
25°C298.15 K <br />77 °F <br />536.67 °R <br />	`~100.0`	`2.6`	`46.2`	`44.7`

Gallery

Sources

Personal crystal growing collection

Saccharinates
Saccharin (C₇H₅NO₃S) • Sodium saccharinate (C₇H₄NaNO₃S)

Sodium compounds
Salts	Sodium acetate (NaCH₃COO) • Sodium bromide (NaBr) • Sodium citrate (Na₃C₃H₅O(COO)₃) • Sodium chlorate (NaClO₃) • Sodium chloride (NaCl) • Sodium cyclamate (C₆H₁₂NNaO₃S) • Sodium decavanadate (Na₆V₁₀O₂₈) • Sodium ethilate (NaC₂H₅O) • Sodium glutamate (NaC₅H₈NO₄) • Sodium hydrocarbonate (NaHCO₃) • Sodium hydrosulfate (NaHSO₄) • Sodium iodide (NaI) • Sodium metavanadate (NaVO₃) • Sodium niobate (NaNbO₃) • Sodium nitrate (NaNO₃) • Sodium oxalate (Na₂C₂O₄) • Sodium para-aminosalicylate (C₇H₆NNaO₃) • Sodium perchlorate (NaClO₄) • Sodium saccharinate (C₇H₄NaNO₃S) • Sodium sulfate (Na₂SO₄) • Sodium sulfide (Na₂S) • Sodium tetraborate (Na₂B₄O₇) • Sodium thiosulfate (Na₂S₂O₃) • Sodium trichloroacetate (NaCCl₃COO) • Sodium trioxalatoaluminate (Na₃[Al(C₂O₄)₃]) • Sodium tungstate (Na₂WO₄)
Double salts	Potassium-sodium tartrate (KNaC₄H₄O₆) • Sodium-ammonium sulfate (NaNH₄SO₄) • Uranyl-sodium acetate (NaUО2(CH₃COO)₃) • Uranyl-zinc-sodium acetate (NaZn(UO₂)₃(CH₃COO)₉) • Zinc-sodium sulfate (Na₂Zn(SO₄)₂)
Adducts	Glucose and sodium bromide adduct (2C₆H₁₂O₆ · NaBr) • Glucose and sodium chloride adduct (2C₆H₁₂O₆ · NaCl) • Urea and sodium chloride adduct (CO(NH₄)₂ · NaCl)
Complex compounds	Sodium dicarbonatocuprate(II) (Na₂[Cu(CO₃)₂]) • Sodium dioxalatocuprate(II) (Na₂[Cu(C₂O₄)₂]) • Sodium ethylenediaminetetraacetate-ferrate(III) (Na[Fe((OOCCH₂)₂N(CH₂)₂N(CH₂COO)₂)]) • Sodium hexacyanoferrate(II) (Na₄[Fe(CN)₆]) • Tripotassium-sodium hexacyanoferrate(II) (K₃Na[Fe(CN)₆]) • Sodium hexafluorosilicate (Na₂[SiF₆]) • Sodium nitroprusside (Na₂[Fe(CN)₅NO]) • Sodium trioxalatochromate(III) (Ns₃[Cr(C₂O₄)₃]) • Dipotassium-sodium trioxalatoferrate(III) (K₂Na[Fe(C₂O₄)₃]) • Potassium-sodium trioxalatoferrate(III) (K₅Na[Fe(C₂O₄)₃]₂) • Sodium trioxalatoferrate(III) (Na₃[Fe(C₂O₄)₃])

Sweeteners
Erythritol (C₄H₁₀O₄) • Fructose (C₆H₁₂O₆) • Mannitol (C₆H₁₄O₆) • Potassium acesulfame (C₄H₄KNO₄S) • Saccharin (C₇H₅NO₃S) • Sodium saccharinate (C₇H₄NaNO₃S) • Sodium cyclamate (C₆H₁₂NNaO₃S) • Sucrose (C₁₂H₂₂O₁₁) • Sucralose (C₁₂H₁₉Cl₃O₈) • Xylitol (CH₂OH(CHOH)₃CH₂OH)

Sodium saccharinate
Names:	sodium saccharinate sodium saccharin sodium salt of saccharine saccharin Е954 food additive sodium 3-oxo-3H-benzoisothiazol-2-ide 1,1-dioxide
Formula:	C₇H₄NaNO₃S (anhydrous) C₇H₄NaNO₃S · 2H₂O (dihydrate)
Molar mass:	205.168 g/mol (anhydrous) 241.198 g/mol (dihydrate)
Shapes:	Rhombic prism
Color:	colorless
Optical properties:	birefringence
Stability:	quickly dehydrates (dihydrate)
Toxicity:	non-toxic

Sodium saccharinate

Description

Where to buy

Precursors

Recrystallization of mixture of sodium cyclamate and sodium saccharinate