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Protocatechualdehyde Dihydroxybenzaldehyde CAS 139-85-5 

  产品分类 : 化學->活性醫療成份

     
Protocatechualdehyde Dihydroxybenzaldehyde CAS 139-85-5
         

  产品规格
 
Model No:    CAS NO 139-85-5
  Country  CN
  Brand  cy
  Packing  25kg
  Minimum Order  25
  Payment Term  L/C,T/T

 

  产品描述
   
  <p>
Chinese Name: 3,4- two hydroxybenzaldehyde
</p>
<p>
English Name: 3,4-Dihydroxybenzaldehyde
</p>
<p>
Alias name: 1,2- dihydroxy -4- benzoyl benzaldehyde two tea aldehyde
</p>
<p>
More aliases: Protocatechualdehyde Protocatechuicaldehyde 1,2-Dihydroxy-4-formybenzene
</p>
<p>
Molecular formula: C7H6O3
</p>
<p>
Molecular weight: 138.12
</p>
<p>
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</p>
<p>
CAS: 139-85-5
</p>
<p>
MDL: MFCD00003370
</p>
<p>
EINECS: 205-377-7
</p>
<p>
RTECS: UL0380000
</p>
<p>
BRN: 774381
</p>
<p>
PubChem: 24893348
</p>
<p>
Physical property<br />
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.
</p>
<p>
Molecular structure data
</p>
<p>
Molar refractive index: 36.76
</p>
<p>
Molar volume (cm3/mol): 97.9
</p>
<p>
Isotonic specific volume (90.2K): 282.3
</p>
<p>
Surface tension (3 dyne/cm): 69
</p>
<p>
Polarizability (0.5 10-24cm3): 14.57
</p>
<img src="http://i.bosscdn.com/product/6b/b3/08/b4832900a3c5e8334b340da043.jpg" alt="" /><img src="http://i.bosscdn.com/product/25/95/ee/a48917bbaba848bc68eb3cfa43.jpg" width="1080" height="724" alt="" />
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</p>chenyichem.com

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