Benzoin Siam - Materials / Alfa Chemistry

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Benzoin Siam

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Catalog Number

ACMA00017309

Product Name

Benzoin Siam

Category

Polymers

Description

Benzoin is an off-white to yellow-white crystalline solid with an odor of camphor. Slightly acrid taste. When broken the fresh surfaces have a milky-white color. (NTP, 1992);DryPowder;Solid;WHITE-TO-YELLOW CRYSTALS.;white to light yellow crystals with a faint, sweet, balsamic odour

IUPAC Name

2-hydroxy-1,2-diphenylethanone

Molecular Weight

212.24g/mol

Molecular Formula

C14H12O2;C6H5COCH(OH)C6H5;C14H12O2

Canonical SMILES

C1=CC=C(C=C1)C(C(=O)C2=CC=CC=C2)O

InChI

InChI=1S/C14H12O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10,13,15H

InChI Key

ISAOCJYIOMOJEB-UHFFFAOYSA-N

Boiling Point

651 °F at 760 mm Hg (NTP, 1992);344.0 °C;at 102.4kPa: 344 °C

Melting Point

279 °F (NTP, 1992);134-138;137.0 °C;137 °C;137°C;137 °C

Density

1.31 at 68 °F (NTP, 1992);1.31 g/cm³

Solubility

less than 0.1 mg/mL at 64° F (NTP, 1992);0.00 M;0.3 mg/mL at 25 °C;SOL IN WARM ALCOHOL & CARBON DISULFIDE; INSOL IN WATER;0.3 mg/mL at 25 °C;Solubility in water, g/100ml: 0.03;insoluble in water; slightly soluble in hot water, oils;slightly soluble (in ethanol)

Application

Benzoin Siam is derived through solvent extraction from the resin of Styrax tonkinensis trees, which flourish in regions such as Thailand, Laos, Cambodia, and Vietnam. This product embodies a reddish to light brown, viscous liquid with a sweet, chocolate-like, balsamic fragrance that is both long-lasting and appealing. In the world of perfumery, Benzoin Siam is prized for its ability to impart rich balsamic notes and act as a fixative, enhancing the staying power of fragrances. The resinoid may contain a variety of natural compounds, including resin acids, esters, terpenes, and the resulting oxidation or polymerization products of these terpenes, making it a versatile component in fragrance formulation.

Color/Form

PALE YELLOW CRYSTALS;WHITE CRYSTALS;REDDISH-BROWN GLOBULES

Complexity

225

Covalently-Bonded Unit Count

EC Number

204-331-3;232-523-7;209-441-5;232-556-7

Exact Mass

212.08373g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1214

Log P

2.13 (LogP)

MeSH Entry Terms

2 hydroxy 1,2 diphenylethanone;2-hydroxy-1,2-diphenylethanone;Benzoin

Monoisotopic Mass

212.08373g/mol

NSC Number

8082

Odor

SWEET NON-DESCRIPT ODOR;VANILLA-LIKE ODOR

Other Experimental

REDUCES FEHLING'S SOLN /DL-FORM/;NEEDLES FROM METHANOL /L-FORM/; NEEDLES /D-FORM/;SIX-SIDED MONOCLINIC PRISMS FROM ALCOHOL /DL-FORM/;BP:344 °C @ 768 MM HG; MP:137 °C; DENSITY: 1.310 @ 20 °C/4 °C /DL-FORM/;SOL IN 3335 PARTS WATER, MORE SOL IN HOT WATER; SOL IN 5 PARTS PYRIDINE; ACETONE; SOL IN BOILING ALC; SLIGHTLY SOL IN ETHER /DL-FORM/;SOL IN HOT METHANOL; SOL IN HOT ALCOHOL; ACETONE /D & L-FORMS/;SOL IN PYRIDINE /D-FORM/;SPECIFIC OPTICAL ROTATION: -117.5 DEG @ 12 °C/D (ACETONE, 1.25%) /L-FORM/;SPECIFIC OPTICAL ROTATION: +92.8 DEG @ 15 °C/D (PYRIDINE, 1%) /D-FORM/;MAX ABSORPTION (ETHANOL): 247 NM (E= 14,500); MAX ABSORPTION (CHLOROFORM): 2.88, 5.93, 6.21, 6.28, 6.85 NM (IR) /DL-FORM/;MAX ABSORPTION (ALCOHOL): 248 NM (LOG E= 4.1); SADTLER REFERENCE NUMBER: 2722 (IR, PRISM); 736 (UV); SOL IN HOT ACETIC ACID; CHLOROFORM /DL-FORM/;MP:133-4 °C /D & L FORMS/;SWEET, BALSAMIC, PLEASANT ODOR; AROMATIC, ACRID, BITTERSWEET TASTE /SIAM OR SUMATRA BENZOIN/;RESIN BECOMES PLASTIC WHEN CHEWED;GRAYISH-RED MASS INTERMIXED WITH YELLOW PIECES SOMEWHAT RESEMBLING ALMONDS /SUMATRA BENZOIN/;BRITTLE @ ROOM TEMP, BUT SOFTENED BY HEAT

Rotatable Bond Count

RTECS Number

DI1590000

Vapor Pressure

5.27e-06 mmHg;1 MM HG @ 135.6 °C;Vapor pressure, Pa at 136 °C: 133

XLogP3

2.1

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