Protocatechualdehyde Dihydroxybenzaldehyde CAS 139-85-5

Basic Info

Model No.: CAS NO 139-85-5

Additional Info

Packaging: 25kg

Productivity: 10000

Brand: cy

Transportation: Ocean,Air

Place of Origin: China

Supply Ability: 10

Port: QINGDAO

Product Description

Chinese Name: 3,4- two hydroxybenzaldehyde

English Name: 3,4-Dihydroxybenzaldehyde

Alias name: 1,2- dihydroxy -4- benzoyl benzaldehyde two tea aldehyde

More aliases: Protocatechualdehyde Protocatechuicaldehyde 1,2-Dihydroxy-4-formybenzene

Molecular formula: C7H6O3

Molecular weight: 138.12

CAS: 139-85-5

MDL: MFCD00003370

EINECS: 205-377-7

RTECS: UL0380000

BRN: 774381

PubChem: 24893348

Physical property
Pale rice needle like crystal (water or toluene) or gray powder, twin crystal. The melting point (M.P.) is 153 ~ 154 C. K=2.8 x 10-8 (25 C). Soluble in ethanol, acetone, ethyl acetate, ethyl ether and hot water, soluble in cold water, insoluble in benzene and chloroform. Solubility in water (g/100m1):5 (20 C); 33 (99 C); solubility in ethanol: 79 (78 C). It has a wetting property and is easy to oxidize and discolor in water. Pale yellow crystals, MP / 152 ~ 154 C (melting time decomposition), dissolved in water, but also soluble in ethanol, ether, chloroform and other organic solvents.

Molecular structure data

Molar refractive index: 36.76

Molar volume (cm3/mol): 97.9

Isotonic specific volume (90.2K): 282.3

Surface tension (3 dyne/cm): 69

Polarizability (0.5 10-24cm3): 14.57