Saccharin

Saccharin ;
Names:	saccharin; free saccharin; acid saccharin; Е954 food additive; glucide; orto-sulfobenzoic acid imide; 2-sulfobenzoic acid imide; orto-sulfobenzoimide; 1,2-benzisothiazol-3(2H)-one 1,1-dioxide;
Formula:	C7H5NO3S;
Molar mass:	183.186 g/mol;
Density:	0.828 g/cm3;
Crystal system:	monoclinic; a=9.55 Å, b=6.91 Å, c=11.8 Åα=90°, β=103.9°, γ=90°;
Shapes:	https://en.crystalls.info/w/uploads/media/5/50/Beveled_tetragonal_prism.json Beveled tetragonal prism https://en.crystalls.info/w/uploads/media/2/28/Prolongated_tetragonal_pyramidal_prism.json Prolongated tetragonal pyramidal prism ;
Color:	colorless;
Melting point:	228.8 °C501.95 K <br />443.84 °F <br />903.51 °R <br />;
Optical properties:	birefringence;
Hardness:	fragile;
Toxicity:	non-toxic; LD50=17000mg/kg

Description

Organic compound, monobasic acid. Doesn't form water hydrates.

Precursors

Reaction between sodium saccharinate and sulfuric acid or hydrochloric acid

Chemical equation:

2C₇H₄NaNO₃S + H₂SO₄ = 2C₇H₅NO₃S↓ + Na₂SO₄

C₇H₄NaNO₃S + HCl = C₇H₅NO₃S↓ + NaCl

For preparation of 100.00g of saccharin а 112.00g of sodium saccharinate and 72.35g of 37%37% sulfuric acid or 52.38g of 38%38% hydrochloric acid is required.

Add to the flask with sodium saccharinate solution small parts of acid solution and stir. The large amount of poorly soluble precipitate will form. Settle it out and wash it from soluble impurities few times. Filter precipitate and wash it wish small amount of diethyl ether or DMSO, then filter the solution and use it for crystal growing.

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.

Storage conditions

Keep in its original form or under several layers of varnish at average humidity and room temperature. Do not keep crystals near heaters.

Solubility

TableGraph

Temperature	g/`100,00` g water	g/`100,00` g ethanol	g/`100,00` g acetone	g/`100,00` g glycerol	g/`100,00` g trichlorethylene
0°C273.15 K <br />32 °F <br />491.67 °R <br />			`7.69`
15°C288.15 K <br />59 °F <br />518.67 °R <br />					`0.012`
20°C293.15 K <br />68 °F <br />527.67 °R <br />	`0.34`	`3.22`		`2`
25°C298.15 K <br />77 °F <br />536.67 °R <br />	`0.43`
50°C323.15 K <br />122 °F <br />581.67 °R <br />			`16.8`
100°C373.15 K <br />212 °F <br />671.67 °R <br />	`4`

Highly soluble in isopropanol. Soluble in xylol, benzene, ethyl acetate and amyl acetate. Slightly soluble in diethyl ether, DMSO and chloroform.

Gallery

Growth from acetone solutionSaccharin, Dmitry Shintyakov, Personal crystal growing collectionDmitry ShintyakovPersonal crystal growing collection
Growth from acetone solutionSaccharin, Dmitry Shintyakov, Personal crystal growing collectionDmitry ShintyakovPersonal crystal growing collection
Growth from acetone solution. Demonstration of birefringenceSaccharin, Dmitry Shintyakov, Personal crystal growing collectionDmitry ShintyakovPersonal crystal growing collection
Growth from acetone solutionSaccharin, Figfogey, redditFigfogeyReddit
Growth from acetone solutionSaccharin, Figfogey, redditFigfogeyReddit
Growth from acetone solutionSaccharin, Figfogey, redditFigfogeyReddit
Growth from acetone solutionSaccharin, Figfogey, redditFigfogeyReddit

Sources

Navigation

Saccharinates
Saccharin (C₇H₅NO₃S) • Sodium saccharinate (C₇H₄NaNO₃S)

Acids

Inorganic

Boric (H₃BO₃) • Disulfozirconium (H₂ZrO(SO₄)₂) • Tetrachlorauric (H[AuCl₄])

Organic

4-Aminobenzoic (H₂NC₆H₄COOH) • Acetylsalicylic (C₉H₈O₄) • Ascorbic (C₆H₈O₆) • Benzoic (C₆H₅СООН) • Citric (C₃H₅O(COOH)₃) • Cyclamic (C₆H₁₃NO₃S) • Glutamic (C₅H₉NO₄) • Glycine (NH₂CH₂COOH) • Oxalic (HOOCСООН) • Phenol (C₆H₅OH) • Phtalic acid (C₈H₆O₄) • Saccarin (C₇H₅NO₃S) • Salycilic (С6Н4(OH)CООН) • Sulfamic (H₂NSO₃H) • Succinic (НООССН2СН2СООН) • Tartaric (C₄H₆O₆) • Trichloroisocyanuric (C₃Cl₃N₃O₃) • Vanillic (C₈H₈O₄)

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)

Saccharin
Names:	saccharin free saccharin acid saccharin Е954 food additive glucide orto-sulfobenzoic acid imide 2-sulfobenzoic acid imide orto-sulfobenzoimide 1,2-benzisothiazol-3(2H)-one 1,1-dioxide
Formula:	C₇H₅NO₃S
Molar mass:	183.186 g/mol
Density:	0.828 g/cm³
Crystal system:	monoclinic a=9.55 Å, b=6.91 Å, c=11.8 Åα=90°, β=103.9°, γ=90°
Shapes:	Beveled tetragonal prism Prolongated tetragonal pyramidal prism
Color:	colorless
Melting point:	228.8 °C501.95 K <br />443.84 °F <br />903.51 °R <br />
Optical properties:	birefringence
Hardness:	fragile
Toxicity:	non-toxic LD₅₀=17000mg/kg