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Ph Indicator

Acid Fuchsin

C.I. No.  :  42685
C.I. Name  :  Acid Violet 19
CAS No.  :  3244-88-0
Appearance  :  Dark Greenish Powder
Solubility (0.1 % in dil HCL)  :  Clear Red Solution
Absorptivity(A1% 1cm at lamda Max 547 nm in dil HCL  :  1057
Dye Content  :  81.00 Min
Empirical formula  :  C20H17N3Na2O9S3
Loss on drying at 110 deg C  :  2.95 %


 

Bromocresol Purple

CAS No.  :  115 - 40 - 2
Chemical Formula  :  C21H16Br2O5S
Molecular Weight  :  540.24
Melting Point  :  240° c
Dye Content  :  ~95%
Transition Range  :  pH 5.2 - 6.8 Greenish Yellow to Purple
Absorption Max(pH5.2)  :  427 - 431 nm
Absorption Max(pH6.8)  :  588 - 590 nm
Absorptivity(1%,1cm)pH 5.2  :  400 - 450
Absorptivity(1%,1cm)pH 6.8  :  1000 - 1100
Loss On Drying  :  <1%


 


 

Janus Green B

C.I.No  :  11050
Chemical Name  :  Janus Green B
CAS No.  :  2869-83-2
Chemical Formula  :  C30H31ClN6
Molecular Weight  :  511.07 gm/mole
Dye Content (Spectrophotometry)  :  >65%
Absorption Max (50% Ethanol)  :  664 +/- 13nm
Absorptivity (A1%/1cm., in 50% Ethanol)  :  > 550
Loss On Drying (110° c)  :  < 5%


 

Neutral Red

C.I.No  :  50040
Chemical Formula  :  C15H17ClN4
CAS No.  :  553-24-2
Molecular Weight  :  288.78
Dye Content  :  ~60%
Absorption Max (EtOH 50%)  :  539 - 544 nm
Absorptivity(1%,1cm)  :  >900 (on dry basis)
Transition Range  :  pH 6.8 - 8.0 Red - Orange
Loss On Drying (110° c.)  :  < 8%

 

Leishman's Stain

CAS No.  :  12627-53-1
Appearance  :  Green Crystalline Powder
Solubilty 0.1%(MeOH)  :  Clear Blue Solution with Green Fluorescence
Absorptivity 1% 1 Cm lamda 524.0 nm lamda 647.0 nm  :  856 ( >650) 1192 (>900)
Loss on Drying  :  6.42% (< 8%)

 


 

Alizarin Red S

C.I.No  :  58005
C.A.S No.  :  130-22-3
Class  :  Anthraquinone
Solubility in 0.1% water  :  Clear Red Soln
Absorptivity 1% 1 cm  : 
(pH 6.3) at lamda max 421.5 nm  :  150
(pH 9.3) at lamda max 525.5 nm  :  288
Loss on drying  :  3.58 %


 

Malachite Green

C.I.No  :  42000
C.A.S No.  :  2437-29-8
C.I. Name  :  Basic green 4
Appearance  :  Green Crystals
Solubility 0.1% (water)  :  Clear Solution
Absorptivity 1% ,1cm at lamda 617.0 nm  :  1858 (limit > 1730)
Loss on Drying  :  4.25 %
Empirical formula  :  C23H25N2Cl
Formula weight  :  365


 

METHYL ORANGE

C.I.No  :  13025
C.A.S No.  :  547-58-0
Chemical Formula  :  C14H14N3NaO3S
Molecular Weight  :  327.34
Melting Point  :  300° c
Dye Content  :  ~95%
Transition Range  :  pH 3.0-4.4 Pink-Orange yellow
Absorptivity(pH 3.0)501-504nm  :  1050-1150
Absorptivity(pH 4.4)467-471nm  :  750-850
Loss On Drying (110 ° c)  :  < 5%


 

Azure 1(B)

C.I.No  :  52010
Common name  :  Azure B
Suggested name  :  Azure B
Solubility in water  :  Soluble
Solubility in ethanol  :  Sparingly
Absorption maximum  :  648-655
Colour  :  Blue
Empirical formula  :  C15H16ClN3S
Formula weight  :  305.83


 

Azure A

C.I.No  :  52005
Common name  :  Azure A
Suggested name  :  Azure A
Solubility in water  :  Soluble
Solubility in ethanol  :  Sparingly
Absorption maximum  :  620-634
Colour  :  Blue
Empirical formula  :  C14H14ClN3S
Formula weight  :  291.8


 

Basic Fuchsin

C.I.No  :  42510
C.A.S. No.  :  632 - 99 - 5
Chemical Formula  :  C20H20ClN3
Molecular Weight  :  337.86
Dye Content  :  ~88%
Absorption Max  :  549 - 552 nm
Absorptivity(1%,1cm)  :  2350 - 2700
Loss On Drying  :  < 10 %


 

Bromo Phenol Blue

C.A.S. No.  :  115 - 39 - 9
Chemical Formula  :  C19H10Br4O5S
Molecular Weight  :  669.98
Melting Point  :  272 - 273° c
Dye Content  :  ~95%
Transition Range  :  pH 3.0 - 4.6 Greenish Yellow - Reddish Blue
Absorption Max (pH3.0)  :  434 - 439 nm
Absorption Max (pH4.6)  :  590 - 593 nm
Absorptivity (1%,1cm) pH 3.0  :  350 - 385
Absorptivity (1%,1cm) pH 4.6  :  940 - 1000
Loss On Drying (110° c)  :  <1%


 

Methylene Blue Zinc Free

C.I. No.  :  52015
Appearance  :  Dark Green Crystalline Powder
Assay ( as is Basis )  :  85%
Assay ( on dry Basis )  :  99%
Loss on drying  :  10.25%
Solubility  :  Clear Blue Solution
Ash Content  :  0.74%
Residual Solvent  :  Nil
Aluminium  :  100ppm
Cadmium  :  Not Detected
Chromium  :  10 ppm
Copper  :  50 ppm
Tin  :  10 ppm
Iron  :  100 ppm
Mangenese  :  3 ppm
Mercury  :  Nil
Molybdenum  :  10 ppm
Absorptivity 1%, 1 cm, at ^max.663.0nm  :  2284


 

Methyl Red

CAS No.  :  493-52-7
C.I.No.  :  13020
Chemical Formula  :  C15H15N3O2
Molecular Weight  :  269.31
Melting Point  :  179-182° c
Dye Content  :  ~95%
Absorption Max(pH4.5)  :  523-526 nm
Absorption Max(pH6.2)  :  430-434 nm
Absorptivity(1%,1cm)pH 4.5  :  >1330
Absorptivity(1%,1cm)pH 6.2  :  >700
Transition Range  :  pH 4.2 - 6.2 Red - Yellow
Loss On Drying (110 ° c)  :  < 5%


 

Orange G

CAS No.  :  1936-15-8
C.I.No.  :  16230
Appearance  :  Orange Powder
Solubility 0.1 % (water)  :  Clear Orange Solution
Absorptivity 1% 1cm at Lamda max 478.0 nm  :  500 ( limit 470-520)
Loss on Drying  :  3.57 %
Empirical formula  :  C16H10N2O7S2Na2
Formula weight  :  452.386


 

Bromothymol Blue

CAS No.  :  76 - 59 - 5
Chemical Formula  :  C27H28Br2O5S
Molecular Weight  :  624.40
Melting Point  :  200 - 202° c
Dye Content  :  ~95%
Solution Clarity  :  To pass
Transition Range  :  pH 5.8 - 7.6 Yellow - Blue
Absorption Max (pH 5.8)  :  430 - 435 nm
Absorption Max (pH 7.6)  :  615 - 618 nm
Absorptivity (1%/1cm) pH 5.8  :  260 - 300
Absorptivity (1%/1cm) pH 7.6  :  470 - 520
Loss On Drying (110° c)  :  < 3%


 

Phenol Red

CAS No.  :  143-74-8
Chemical Formula  :  C19H14O5S
Molecular Weight  :  354.38
Dye Content  :  ~95%
Solution Clarity (Water)  :  To pass
Transition Range  :  pH 6.5 - pH 8.0
Absorptivity (pH 1.2) 503 - 506 nm  :  1000 - 1100
Absorptivity (pH 3.0) 430-435 nm  :  600-700
Absorptivity (pH 6.5) 430 - 435 nm  :  600 - 700
Absorptivity (pH 8.0) 557 - 560 nm  :  1100 - 1200
Loss On Drying (110° c)  :  < 1%


 

Phenol Red Sodium Salt

CAS No.  :  34487-61-1
Chemical Formula  :  C19H13NaO5S
Molecular Weight  :  376.36
Melting Point  :  285° c
Dye Content  :  ~90%
Solution Clarity (Water)  :  To pass
Transition Range  :  pH 6.5 - pH 8.0 Yellow to Red violet
Absorptivity (pH 1.2) 503 - 506 nm  :  880 - 950
Absorptivity (pH 3.0) 430-435 nm  :  560 - 620
Absorptivity (pH 6.5) 430 - 435 nm  :  560 - 620
Absorptivity (pH 8.0) 557 - 560 nm  :  970 - 1100
Loss On Drying (110° c)  :  < 5%


 

Chlorophenol Red

CAS No.  :  4430-20-0
Chemical Formula  :  C19H12Cl2O5S
Molecular Weight  :  423.28
Dye Content  :  ~70%
Solution Clarity (EtOH)  :  To pass
Transition Range  :  pH 4.8 - pH 6.4
Absorptivity (pH 4.8) 432 - 436 nm  :  450 - 600
Absorptivity (pH 6.4) 574 - 578 nm  :  1000 - 1300
Loss On Drying (110° c.)  :  < 8%


 

Diethyl Safranine

C.I.No.  :  50206
CAS No.  :  4569-86-2
Chemical Name  :  3-Amino-7-(diethylamino)-5- Phenyl Phenazinium Chloride.
Chemical Formula  :  C22H23N4CI
Molecular Weight  :  378.91 gm/mole
Dye Content (Spectrophotometre)  :  =>80%
Absorption Max (in water)  :  = 552 - 557 nm
Absorptivity (A1%/1cm. in water,)  :  = > 950
Loss On Drying (110° c)  :  = < 5%


 

Safranine O

CAS No.  :  477-73-6
C.I.No.  :  50240
Chemical Formula  :  C20H19ClN4
Molecular Weight  :  350.85
Dye Content  :  ~95%
Absorption Max (EtOH 50%)  :  530 - 534 nm
Absorptivity (1%,1cm)  :  > 1350 (on dry basis)
Loss On Drying (110° c)  :  8% max


 

Nitrazine Yellow
 

Product No.  :  NTY 09394
Product Brand  :  NILE
Batch No.  :  118/41
Molecular Weight  :  542.36

 

TEST SPECIFICATION RESULTS
Appearance (Colour) Brown - Yellowish Orange Powder Complies
Appearance (Form) Powder
Wavelength 587 - 591 nm Complies
Extinction Coefficient >=35000
Dye Content 85% Complies
Solubility (Colour) Clear Yellow to Reddish Brown At PH 6.0 Bright Yellow
c=1 mg/ml; Water At PH 7.2 Bright Blue
Solubility (Turbidity) Clear Complies


 

Fluorescein
 

Specification : Lot : NC/2905
Batch Size : 250 Kgs.
C.I. No. : 45350
CAS No. : 2321-07-5
C20h12O5
Minimum Assay : 98.5%
Absorption Max : 491-496 nm
Loss on Drying : 8%

 

Maximum Limits of Impurities
Lead (Pb) : 0.002%
Copper (Cu) : 0.01%
Cadmium (Cd) : 0.001%
Zinc (Zn) : 0.01%
Arsenic (As) : 0.0002%
Acriflavine : Passes Test

 
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Contact : Bhaumik Patel, Alkeshbhai Patel

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