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Good Quanlity Bromcresol Purple CAS No.: 115-40-2 pH Indicator
| Price | $300.00 |
|---|---|
| Min Order | 5 kg |
| Availability | In Stock |
| Shipping From | Liaoning, China |
| Popularity | 353 people viewed |
Model NO.:
IND
CAS No.:
115-40-2
Formula:
C21h16br2o5s
EINECS:
204-087-8
Environmental Protection:
Yes
Color:
Purplish-Brown
Classification:
Medical Laboratories to Measure Albumin
Appearance:
Powder
Molar Mass:
540.22
Melting Point:
240 °c (DEC.)(Lit.)
Solubility in Water:
< 0.1 %
Density:
1.8±0.1 g/cm3
Boiling Point:
590.2±50.0 °c at 760 Mmhg
Flash Point:
310.7±30.1 °c
Trademark:
Sinochembt
Transport Package:
25 Kgs Fiber Drums
Specification:
99%
Origin:
Shenyang
HS Code:
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% |
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