PHENOL RED

PHENOL RED

PHENOL RED

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0 Metric Ton

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  • Min.Order :0 Metric Ton
  • Purity: 90 %

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Cas No 143-74-8 PHENOL RED

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  • Appearance:Red Powder
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PRODUCT NAME     :           PHENOL RED

 

CAS No                      :           143-74-8

 

Molecular Formula   :           C19H14O5S

 

TEST                                                              LIMITS                                    RESULTS

 

1. Appearance                                               Red powder                             Passes test

 

2. Transition range                                       pH 6.5 - 8.2

                                                                        Yellow - Red violet

 

3. Solubility 0.1% (95% EtOH)                     Clear golden yellow solution (Passes test)

 

4. Absorptivity 1%, 1cm,

(pH 6.5) at A, max.431.4 nm                         (600 -700)                                  672                          

(pH 8.2) at A, max.558.2 nm                         (1100 -1200)                              1159                                    

 

5.Dye content by Spectrophotometry -      (> 95%)                                      96.6 %         

           

6. Loss on drying at 110°C (lhr)                     (<1%)                                       0.91%         

 

7. Transition range ace. to ACS                  (Passes test)

 

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