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, hexabasic sugary alcohol. Doesn't form water hydrates.

Where to buy

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

Influence of temperature

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

Influence of impurities

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

Storage conditions

Store in its original form or under several layers of varnish at average humidity and room temperature. Do not store in matchboxes or cotton wool and do not heat.

Solubility

TableGraph

Temperature	гр/`100,00` гр water	гр/`100,00` гр ethanol	гр/`100,00` гр ethanol 40%	гр/`100,00` гр ethanol 60%	гр/`100,00` гр ethanol 80%	гр/`100,00` гр glycerol	гр/`100,00` гр pyridine	гр/`100,00` гр isobutanol	гр/`100,00` гр 1-butanol	гр/`100,00` гр 2-butanol	гр/`100,00` гр tert-butanol	гр/`100,00` гр allyl alcohol
0°C273.15 K <br />32 °F <br />491.67 °R <br />	`9.42`	`0.003`	`1.81`	`0.79`	`0.16`
10°C283.15 K <br />50 °F <br />509.67 °R <br />	`12.05`
15°C288.15 K <br />59 °F <br />518.67 °R <br />	`14.1`	`0.01`
20°C293.15 K <br />68 °F <br />527.67 °R <br />						`7`
25°C298.15 K <br />77 °F <br />536.67 °R <br />	`17.73`	`0.03`	`5.48`	`2.25`	`0.55`		`0.47`
40°C313.15 K <br />104 °F <br />563.67 °R <br />	`25.71`	`0.075`									`0.05`
50°C323.15 K <br />122 °F <br />581.67 °R <br />	`32.07`	`0.28`								`0.04`
60°C333.15 K <br />140 °F <br />599.67 °R <br />	`38.33`	`0.81`	`26.5`	`2.36`	`4.08`			`0.027`	`0.032`			`0.093`
80°C353.15 K <br />176 °F <br />635.67 °R <br />	`53.49`
90°C363.15 K <br />194 °F <br />653.67 °R <br />	`60.1`
100°C373.15 K <br />212 °F <br />671.67 °R <br />	`66.33`

Soluble in aniline. Insoluble in diethyl ether.

Gallery

Growth during 2 weeksMannitol, Dmitry Shintyakov, VKontakteDmitry ShintyakovVKontakte
Growth during 2 weeksMannitol, Dmitry Shintyakov, VKontakteDmitry ShintyakovVKontakte
Growth during 2 weeksMannitol, Dmitry Shintyakov, VKontakteDmitry ShintyakovVKontakte

Sources

Navigation

Alcohols
Erythritol (C₄H₁₀O₄) • Ethylvanillin (C₉H₁₀O₃) • Hydroquinone (C₆H₄(OH)₂) • Mannitol (C₆H₁₄O₆) • Menthol (C₁₀H₂₀O) • Paracetamol (C₈H₉NO₂) • Tert-butanol ((CH₃)₃COH) • Vanillin (C₈H₈O₃) • Vanillic acid (C₈H₈O₄) • Xylitol (H₂OH(CHOH)₃CH₂OH)

Sweeteners
Erythrytol (C₄H₁₀O₄) • Mannitol (C₆H₁₄O₆) • Xylitol (CH₂OH(CHOH)₃CH₂OH) • Saccharin (C₇H₅NO₃S) • Sodium saccharinate (C₇H₄NaNO₃S) • Fructose (C₆H₁₂O₆) • Sucrose (C₁₂H₂₂O₁₁) • Sucralose (C₁₂H₁₉Cl₃O₈)

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