Synthetic Dyes - Suppliers, Manufacturers, Exporters

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SUDAN IV A.C.S. Above 90%

PRODUCT NAME : SUDAN IV

Synonym       : Solvent Red 24,

C.I. NO.  : 26105

CAS NO.  : 85-83-6

Molecular Formula : C24H20N4O

Molecular Weight :  380.45

 

Apparance  : Dark Red Powder   Passes

Dye content
(Titanometric) :  ~60%     Passes


Abs.max.(toluene) :   520-523-(357)nm   Passes


Loss on Drying : 5%     2.3%

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ANTHRONE A.C.S. Above 90%

PRODUCT NAME : ANTHRONE

Synonym:   9(10H)-Anthracenone

CAS NO.  : 90-44-8

Molecular Formula : C14H10O 

Molecular Weight : 194.24

Appearance  : Red Purple Powder

 


TESTS                                                   LIMITS                            RESULT
 
Description                             Pale Yellow to Yellow to Brown  Complies
                                                   Crystalline Powder

Solubility   a)                      Solubility in 5% Ethyl Acette              Passes Test
                                                Clear Solution 
                                         b) 25% Solution in Acetone
                                                    Clear                                       Passes Test

Melting Range                        155C – 158C                               158C

Loss on Drying                         NLT – 1.0% (100C)                         0.432%

Assay (On Dried Basis)                 NLT – 98.0%                            99.07%

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NINHYDRIN A.C.S. Above 90%

PRDODUCT NAME        : NINHYDRIN
Molecular Formula        : C9H6O4
Molecular Weight        : 178.14
Physical Appearance      : Yellowish Crystalline Powder

STRUCTURE         :    


TESTS                                               LIMITS                                RESULTS

Melting Point              251 – 252°C (With Decomposition)           Passes Test

PH of 1% Solution                   4.5(Standard 4.2 to 5.5)                 Passes Test

Moisture Content                      9.1 %( Standard 9-11 %)              Passes Test

Solubility   0.1 gm in 10 ml water
                                                (Clear pale yellow solution)       Passes Test
                                       1 gm in 10 ml 2 – Methoxy Ethanol 
                                                 Clear Solution

Assay on Anhydrous                      99.0%                                         99.52 %
Basis

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SUDAN III A.C.S. Above 90%

PRODUCT NAME : SUDAN III  

Synonym: Solvent Red 23

C.I. NO.  : 26100

CAS NO.  : 85-86-9

Chemicals Formula : C22H16N4O

Molecular Weight :  352.39

 


TESTS                                           RESULTS                    LIMITS

Appearance                            Dark Red Powder               Passes

Solubility 0.1% (In Toluene)  Clear Red Solution              Passes

Absorptivity 1%/1cm,                       890                             > 870
at  max 509.0nm

Loss on Drying (110C)                 0.85%                               <1%

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evans blue A.C.S. Above 90%

PRODUCT NAME : EVAN’S BLUE 
 
Synonyms  : Direct Blue 53  
 
C.I. NO.  : 23860   
 
CAS NO.  : 314-13-6 
 
Molecular Formula : C34H24N6 Na4O14S4  
 
Formula Weight : 960.82 
 
Appearance  : Black Powder 
 
Structure  :  
 
   
 
 
TESTS       LIMITS   
 
Solubility 0.1% (in dist. Water)    Clear Blue Solution 
 
Absorptivity 1%/1cm, at λ max.315.0nm  329 
 
Absorptivity 1%/1cm, at λ max.608.0nm  >800 
 
Loss On Drying at 110°C (1hr)   <10% 

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methyl red A.C.S. Above 90%

PRODUCT NAME     :           METHYL RED

 

Synonyms                  :           [2-[4-(Dimethylamino)phenyl azo] Benzoic Acid]

CAS NO.                    :           493-52-7

C.I. NO.                       :           13020

Molecular Formula   :           C15H15N3O2

Formula Weight        :           269.31

Appearance               :           Dark Red Powder       

Structure                    :          

 

TESTS                                                                        LIMITS                        RESULTS

Solubility 0.1% (EtOH)                                 Red Solution             Passes Test

Transition range                                           pH4.2 - 6.2                                                     

                                                                        Red    

Yellow                                              

Solubility 0.1%(EtOH)                                  Red Solution             Passes Test

Absorpitive 1% , 1cm,

(pH 6.2) at ? max 432.0nm                            778                              (700-800)

(pH 4.2) at ? max. 526.0 nm                          1361                            (1300 – 1400)

Dye content by Spectrophotometry           97.21%                        (>95%)

Loss on drying at 110?C (1 hr)                    2.22%                          (<3%)

PRODUCT NAME     :           METHYL RED

 

Unisource Chemicals Pvt Ltd is a company specialized in manufacture and supply of dyes like methyl red. Unisource’s methyl red is a pH indicator in the laboratory experiments, azo dye for the textile, leather industries. You can buy methyl red that can also be used in microbiology laboratories to identify bacteria presence. Methyl red offered by Unisource supplier is also employed in carbohydrate and lactic acid detection experiments.

 

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phenol red A.C.S. Above 90%

PRODUCT NAME     :           PHENOL RED (free acid)

 

CAS No                      :           143-74-8

 

Molecular Formula   :           C19H14O5S

 

Batch No                    :           PR-10/37

 

MFG DATE                :           OCT- 2017

 

EXP DATE                 :           SEP- 2023

 

Appearance               :           Red powder                        

 

TEST                                                               LIMITS                                     RESULTS

 

Transition range                                           pH 6.5 - 8.2

                                                                        Yellow - Red violet

 

solubility 0.1% (95% EtOH)                          Clear solution                        Passes test

 

Absorptivity 1%, lcm,

(pH 6.5) at A, max.431.4 nm                           600 -700                                671    

(pH 8.2) at A, max.558.2 nm                          1100 -1200                            1157

 

Dye content by Spectrophotometry             95%                                        96.6%                                   

           

Loss on drying at 110°C (1hr)                     < 1%                                        0.94%             

                                                                                   

Transition range ace. to ACS                      Passes test                            Passes test   

                                                           

 

 

 

Remarks :     The above sample conforms to standard specifications

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PHENOL RED A.C.S. Above 90%

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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ROSE BENGAL A.C.S. Above 90%

PRODUCT NAME : ROSE BENGAL
Synonyms  : Acid Red 94; C.I. 45440; 4,5,6,7-tetrachloro-2’4’5’7’-
tetraiodofluorescein disodium salt
CAS NO.  : 632-69-9
C.I. NO.  : 45440
Molecular Formula : C20H2CI4I4Na2O5
Formula Weight : 1017.6
Appearance  : Dark Red Powder
Structure  :

 

TESTS                                                  LIMITS                         RESULTS 

Solubility 0.1% (dist. water)              Clear Solution                  Passes test

Absorption maximum
(water + 2ml 5% NaCo3soln)            544-550                                  547  


(A1%1cm in water, at lambda max)        >910                                 947   
Loss on Drying at 110°C (1hr)            <10%                                 1.5% maximum

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TRYPAN BLUE A.C.S. Above 90%

PRODUCT NAME : TRYPAN BLUE
Synonyms  : Diamine blue 3B; Niagara Blue 3B; Direct Blue 14
CAS NO.  :  72-57-1
C.I. NO.  : 23850
Molecular Formula : C34H24N6Na4O14S4
Formula Weight : 960.82
Appearance  : Dark Blackish Brown Powder
Structure  :


TESTS     LIMITS   RESULTS

Solubility 0.1% (50%EtOH)  Clear blue solution  Clear blue solution

Absorption Max.(50% EtOH) 600 - 610nm   605

Absorptivity (A1%/1cm,
in 50%EtOH, at max.)  > 450    640

Loss On Drying 110C (1 hr) < 10%    3.49%

Dye content    >60%

 

Unisource Chemicals Pvt Ltd is a company specialized in manufacture and supply of dyes like TRYPAN BLUE Unisource’s TRYPAN BLUE is a pH indicator in the laboratory experiments, azo dye for the textile, leather industries. You can buy TRYPAN BLUE that can also be used in microbiology laboratories to identify bacteria presence. TRYPAN BLUE red offered by Unisource supplier is also employed in carbohydrate and lactic acid detection experiments.

Suppliers

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