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bromocresol green A.C.S. Above 90%

PRODUCT NAME     :           BROMOCRESOL GREEN

 

Synonyms                  :           3',3",5',5"-Tetrabromo-m-cresolsulfonephthalein           

 

CAS NO.                    :           76-60-8

 

Molecular Formula   :           C21H14Br4O5S

 

Formula Weight        :           698.04

 

Appearance               :           Pinlish Beige to yellow to tan powder

 

Structure                    :          

 

 

 

BATCH NO.               :           BCGK -0717

 

 

TESTS                                              LIMITS                                               RESULTS    

 

Transition pH range                         pH3.8 - pH5.4                                     pH3.8 - pH5.4

                                                            Yellowish Green- Blue                     Yellowish Green- Blue        

           

Soluability 0.1% (EtOH)                   Clear Golden Yellow Solution         Passes as per ACS

 

Absorptivity 1%/1cm,

(pH 3.8) at lmax 443.0 nm               240-270                                               248                                                     

(pH 5.4) at lmax 616.0 nm               530-570                                               545

 

Dye content

(by Spectrophotometry)                  > 95%                                                  96.2%

 

Loss on drying (110°C) 1 hr.           < 3%                                                    2.15%  

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crystal violet A.C.S. Above 90%

MOLECULAR FORMULA   :  C255H30ClN3

 

MOLECULAR WEIGHT      :  407.99

 

DESCRIPTION                      :  GREEN SHINY CRYSTAL POWDER

       

IDENTIFICATION (A,B,C)  :  COMPLIES WITH USP

                                                      

WATER CONTENT              :  5.01%                                        (LIMITS: NMT 7.5 %)

 

RESIDUE ON IGNITION     :  0.083%                                  (LIMITS: NMT 1.5 %)

 

ALCOHOL INSOLUBLE

SUBSTANCES                        :  0.067%                                  (LIMITS: NMT 1%)

 

Chromatographic Purity        :  Complies With USP (BY TLC)

 

LEAD                                      :  ABSENT                                    (LIMITS: NMT 0.003%)

 

ARSENIC                               :  ABSENT                                 (LIMITS: NMT 0.001%)

 

ZINC                                       :  Complies With USP

                                                   (BY AAS)                                (LIMITS: NMT 0.001%)

MICHLER’S KETONE         :  NIL                                         (LIMITS: NMT 1%)          

ASSAY                                    :  99.4%                                     (LIMITS : NMT 96 - 100.5%)

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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 orange A.C.S. Above 90%

PRODUCT NAME     :           METHYL ORANGE

 

Synonyms                  :           Acid Orange 52;  Orange III; 4-(Dimethylamino)

                                                azo-benzenesulfonic Acid, Sodium Salt

 

C.I. NO.                       :           13025

 

CAS NO.                    :           547-58-0

 

Molecular Formula   :           C14H14N3NaO3S

 

Formula Weight        :           327.34

 

Appearance               :           Orange Powder

 

Structure :

 

 

 

BATCH NO.               :           MO 1709

Mfg Date                    :           Sep 2017

Exp Date                    :           Oct 2022

 

 

TESTS                                                            LIMITS                                    RESULTS

 

Solubility 0.05% (Dist. Water           Orange solution                    Passes Test

 

Absorptivity 1%/1cm,

(pH 3.1) at max. 506.0 nm                 1050 - 1150                             1070

 

(pH 4.4) at max. 466.0 nm                 750 - 850                                 785

 

Loss on drying at 110°C (1hr)         < 3%                                        2.10%

 

 

Remarks :      The above sample conforms to standard specifications

 

 

Analyzed  by                          Approved by                          Quality Controller

 

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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                    :          

 BATCH NO.               :           MR-1707

Mfg Date                    :           Jul  2017

Exp Date                    :           Jun 2022

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

BATCH NO.               :           MR-1707

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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o-CRESOLPHTHALEIN A.C.S. Above 90%

PRODUCT NAME     :           o-CRESOLPHTHALEIN

 

CAS NO                     :           596-27-0

 

Molecular Formula   :           C22H18O4

 

Appearance               :           White Powder

 

BATCH NO.               :           OCP 0118

 

MFG DATE                :           JAN 2018

EXP DATE                 :           DEC 2023

 

 

 

TEST                                                              LIMIT                          RESULT

 

1. Appearance                                              White powder            Passes test

 

 

2. Solubility 0.1% (Ethanol)                         Clear solution            Passes test

 

 

3. Transition range                                       pH 8.2 - 9.8

                                                                        Colorless - Violet red          

 

 

4. Absorptivity 1%/1 cm(in 0.1N NaOH)     > 1670                         1718

    at "2 max. 567.4 nm

 

5. Dye content by Spectrophotometry       > 90%                          92.50%

 

 

6.Loss on drying (110QC)                            <1%                             0.81%

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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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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                    :

 

 

 

 

BATCH NO.               :           TRB-765-1

Mfg Date                    :           Dec 2017

Exp Date                    :           Nov 2022

 

 

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%                                       61%

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