Payment Type: | L/C,T/T |
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Incoterm: | FOB,CIF |
Min. Order: | 25 Kilogram |
Delivery Time: | 10 Days |
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
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