Audited Supplier
IND
115-40-2
C21h16br2o5s
204-087-8
Yes
Purplish-Brown
Medical Laboratories to Measure Albumin
Powder
540.22
240 °c (DEC.)(Lit.)
< 0.1 %
1.8±0.1 g/cm3
590.2±50.0 °c at 760 Mmhg
310.7±30.1 °c
Sinochembt
25 Kgs Fiber Drums
99%
Shenyang
29349990
Product Description
Bromocresol purple (BCP) or 5′,5″-dibromo-o-cresolsulfophthalein, is a dye of the triphenylmethane family (triarylmethane dyes) and a pH indicator. It is colored yellow below pH 5.2, and violet above pH 6.8. In its cyclic sulfonate ester form, it has a pKa value of 6.3, and is usually prepared as a 0.04% aqueous solution.Bromocresol purple is used in medical laboratories to measure albumin. Use of BCP in this application may provide some advantage over older methods using bromocresol green. In microbiology, it is used for staining dead cells based on their acidity, and for the isolation and assaying of lactic acid bacteria.
| Specification: | Requirements: | Results: |
| Appearance | Purplish-brown powder | Passes test |
| pH Visual transition interval | 5.2(Yellow)~6.8(violet) | Passes test |
| Solubility | Passes test | Passes test |
| Sulfated ash w/% | 0.25% max | 0.22% |
| Loss on drying w/% | 0.5% max | 0.1% |
