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3 4-dihydroxybenzoic acid 99% CAS NO 99-50-3 

  产品分类 : 化學->活性醫療成份

     
3 4-dihydroxybenzoic acid 99% CAS NO 99-50-3
         

  产品规格
 
Model No:    cy99-50-3
  Country  CN
  Brand  cy
  Packing  25kg
  Minimum Order  25
  Payment Term  L/C,T/T

 

  产品描述
   
  <p>
Protocatechuic acid
</p>
<p>
Chinese alias: catechol -4- carboxylic acid; 3,4- two hydroxybenzoic acid;
</p>
<p>
English Name: 3,4-dihydroxybenzoic acid
</p>
<p>
English aliases: 4-Carboxy-1,2-dihydroxybenzene; Protocatehuic acid; protocatechuate; 3,4-dihydroxy-benzoic acid; 4,5-Dihydroxybenzoic acid;
</p>
<p>
Benzoic acid, 3,4-dihydroxy-; 3,4-Dihydroxybenzoic acid; protochatechuic acid; 3,4-dihydroxybenzoate; protocatechuic acid; Benzoic acid, 3,4-dihydroxy;
</p>
<p>
CAS: 99-50-3
</p>
<p>
Molecular formula: C7H6O4
</p>
<p>
Molecular weight: 154.12000
</p>
<p>
Precise quality: 154.02700
</p>
<p>
PSA:77.76000
</p>
<p>
LogP:0.79600
</p>
<p>
Physicochemical properties
</p>
<p>
Appearance and properties: white to yellowish crystalline powder.
</p>
<p>
Density: 1.559 g/cm3
</p>
<p>
Melting point: 197-200 °C(Dec.) (lit.)
</p>
<p>
Boiling point: 410.7°C at 760 mmHg
</p>
<p>
Stability: Stable. Incompatible with strong oxidizing agents, strong bases.
</p>
<p>
Store conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
</p>
<p>
security information
</p>
<p>
Symbol:
</p>
<p>
GHS07
</p>
<p>
Signal word: warning
</p>
<p>
Hazard statement: H315; H319; H335
</p>
<p>
Cautionary statement: P261; P305 + P351 + P338
</p>
<p>
Customs Code: 2918290000
</p>
<p>
WGK Germany:3
</p>
<p>
Danger category code: R36/37/38
</p>
<p>
Safety instructions: S26-S36-S37/39
</p>
<p>
RTECS: UL0560000
</p>
<p>
Dangerous goods sign: Xi
</p>
<p>
purpose
</p>
<p>
This product is used as food additive.
</p>chenyichem.com

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