Mannitol

Mannitol ;
Names:	mannit; D-mannitol; osmitrol; manna sugar; Е421 food additive;
Formula:	C6H14O6;
Molar mass:	182.171 g/mol;
Density:	1.489 g/cm3;
Crystal system:	orthorhombic (α); a=8.94 Å, b=18.41 Å, c=4.92 Åα=90°, β=90°, γ=90°; orthorhombic (β); a=8.672 Å, b=16.875 Å, c=5.56 Åα=90°, β=90°, γ=90°; orthorhombic (γ); a=9.33 Å, b=17.36 Å, c=4.99 Åα=90°, β=90°, γ=90°; monoclinic (δ); a=5.08941 Å, b=18.2504 Å, c=4.91702 Åα=90°, β=118.303°, γ=90°; orthorhombic (K); a=8.942 Å, b=18.798 Å, c=4.893 Åα=90°, β=90°, γ=90°; triclinic (hemihydrate); a=9.8963 Å, b=10.5424 Å, c=4.7860 Åα=102.589°, β=86.092°, γ=116.079°;
Shapes:	https://en.crystalls.info/w/uploads/media/6/68/Irregular_pinacoidal_prism.json Irregular pinacoidal prism https://en.crystalls.info/w/uploads/media/a/af/Tetragonal_prism.json Tetragonal prism https://en.crystalls.info/w/uploads/media/5/52/Needle.json Needle ;
Color:	colorless;
Melting point:	166.1 °C439.25 K <br />330.98 °F <br />790.65 °R <br />;
Decomposition point:	-5 °C268.15 K <br />23 °F <br />482.67 °R <br /> (hemihydrate);
Toxicity:	slightly toxic; LD50=1700mg/kg

Description

Organic compound, six-carbon sugar alhocol Doesn't form water hydrates.

Can be bought in pharmacy (as "Mannitol' sweetener).

When grown from hot solution, usually large amount of small crystals is formed.

Addition of boric acid or growth from organic solvents such as methanol leads to changing the shape of crystal.

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

TableGraph

Soluble in aniline. Insoluble in diethyl ether.

Alcohols
Erythritol (C₄H₁₀O₄) • Mannitol (C₆H₁₄O₆) • Tert-butanol ((CH₃)₃COH) • Xylitol (H₂OH(CHOH)₃CH₂OH)

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)

Mannitol
Names:	mannit D-mannitol osmitrol manna sugar Е421 food additive
Formula:	C₆H₁₄O₆
Molar mass:	182.171 g/mol
Density:	1.489 g/cm³
Crystal system:	orthorhombic (α) a=8.94 Å, b=18.41 Å, c=4.92 Åα=90°, β=90°, γ=90° orthorhombic (β) a=8.672 Å, b=16.875 Å, c=5.56 Åα=90°, β=90°, γ=90° orthorhombic (γ) a=9.33 Å, b=17.36 Å, c=4.99 Åα=90°, β=90°, γ=90° monoclinic (δ) a=5.08941 Å, b=18.2504 Å, c=4.91702 Åα=90°, β=118.303°, γ=90° orthorhombic (K) a=8.942 Å, b=18.798 Å, c=4.893 Åα=90°, β=90°, γ=90° triclinic (hemihydrate) a=9.8963 Å, b=10.5424 Å, c=4.7860 Åα=102.589°, β=86.092°, γ=116.079°
Shapes:	Irregular pinacoidal prism Tetragonal prism Needle
Color:	colorless
Melting point:	166.1 °C439.25 K <br />330.98 °F <br />790.65 °R <br />
Decomposition point:	-5 °C268.15 K <br />23 °F <br />482.67 °R <br /> (hemihydrate)
Toxicity:	slightly toxic LD₅₀=1700mg/kg