CERTIFICATE OF ANALYSIS
PRODUCT NAME : THYMOL BLUE INDICATOR AR
CAS No : 76-61-9 Product code : 19510
Mol. Formula : C27H30O5S Batch No : MCR-22475-03
Mol. WT : 466.60 Mfd. : Dec. 2024
Date of Analysis : 19/12/24 Exp. : Nov. 2029
S.R Test Specification Observation
1 Description Brownish-green or Olive green powder.
reddish-brown or
Olive green or dark
brown powder.
2 Transition interval from Pinkish red to Yellow Pinkish red to Yellow
pH 1.2 – 2.8
3 Transition interval from Greenish Yellow to Greenish Yellow to Blue
pH 8.0 – 9.6 Blue
4 Specific Absorptivity A 1%/1cm
λ max at about
543 to 547 nm in pH buffer 1.2 360 - 500 478.12
431 to 436 nm in pH buffer 2.8 200 - 300 260.22
431 to 436 nm in pH buffer 7.8 200 - 300 265.85
594 to 598 nm in pH buffer 9.5 450 – 550 510.14
5 Loss on drying at 105° C 3% max 1.8%
REMARK: THE PRODUCT COMPLIES WITH THE ABOVE SPECIFICATIONS
[Tested By] [QC Incharge]
CHEMIST HEAD-QUALITY ASSURANCE
(Ruchi) (G.G.Salian)
MOLYCHEM H.Q. : Maker Tower 'E', 41-A2, 4th Floor, Above Maker Arcade, Cuffe Parade, Mumbai 400 005 (INDIA)
Tel. : +91 22 4066 8111• Email: info@molychem.net • Web: www.molychem.net
Reg. Office : 78/80 Babu Genu Road, Souri Bldg., 2nd Floor, Mumbai - 400 002 (INDIA)
Works : Unit I - Plot No. B/9, Unit II - Plot No. B/11, Badlapur M.I.D.C., Opp. Shobhavat Textile Co., Kulgaon, Badlapur (E), Dist.-Thane-421 503.
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