Vanillic acid

Vanillic acid ;
Names:	vanillic acid; 4-hydroxy-3-methoxybenzoic acid;
Formula:	C8H8O4;
Molar mass:	168.148 g/mol;
Density:	1.351 g/cm3;
Crystal system:	monoclinic; α=90°, γ=90°;
Shapes:	https://en.crystalls.info/w/uploads/media/5/52/Needle.json Needle ;
Color:	colorless;
Melting point:	210 °C483.15 K <br />410 °F <br />869.67 °R <br />;
Boiling point:	353.4 °C626.55 K <br />668.12 °F <br />1,127.79 °R <br />;
Stability:	stable;
Hardness:	fragile

Description

Weak organic acid, result of oxydation of vanillin aldehyde. Doesn't form water hydrates.

TableGraph

Temperature	g/`100,00` g water
14°C287.15 K <br />57.2 °F <br />516.87 °R <br />	`0.15`
100°C373.15 K <br />212 °F <br />671.67 °R <br />	`2.6`

Highly soluble in ethanol and diethyl ether.

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

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

Ethers
Acetylsalicylic acid (C₉H₈O₄) • Dimethyl oxalate ((CH₃)₂C₂O₄) • Ethylvanillin (C₉H₁₀O₃) • Vanillin (C₈H₈O₃) • Vanillic acid (C₈H₈O₄)

Vanillic acid
Names:	vanillic acid 4-hydroxy-3-methoxybenzoic acid
Formula:	C₈H₈O₄
Molar mass:	168.148 g/mol
Density:	1.351 g/cm³
Crystal system:	monoclinic α=90°, γ=90°
Shapes:	Needle
Color:	colorless
Melting point:	210 °C483.15 K <br />410 °F <br />869.67 °R <br />
Boiling point:	353.4 °C626.55 K <br />668.12 °F <br />1,127.79 °R <br />
Stability:	stable
Hardness:	fragile