This solution is formulated to contain Bromocresol Green at 0.1% (1 mg/mL) amd Methyl Red at 0.02% (200 ug/mL). The final concentration is not determined, however the Extinction Coefficients and optimum Wavelengths are reported on the lot specific Certificate of Analysis. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/sial/318728#product-documentation
318728
Bromocresol Green/Methyl Red, mixed indicator solution
in methanol
Synonym(s):
Tetrabromocresolsulfonphthalein
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About This Item
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
Pricing and availability is not currently available.
Recommended Products
form
liquid
Quality Level
composition
Bromocresol Green, 0.1%
Methyl Red, 0.02%
concentration
in methanol
density
0.839 g/mL at 25 °C
λmax
434 nm
ε (extinction coefficient)
≥10000 at 282-288 nm in methanol
≥20000 at 509-519 nm in methanol
≥7000 at 329-335 nm in methanol
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
CN(C)c1ccc(cc1)\N=N\c2ccccc2C(O)=O.Cc3c(Br)c(O)c(Br)cc3C4(OS(=O)(=O)c5ccccc45)c6cc(Br)c(O)c(Br)c6C
InChI
1S/C21H14Br4O5S.C15H15N3O2/c1-9-12(7-14(22)19(26)17(9)24)21(13-8-15(23)20(27)18(25)10(13)2)11-5-3-4-6-16(11)31(28,29)30-21;1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-8,26-27H,1-2H3;3-10H,1-2H3,(H,19,20)/b;17-16+
InChI key
MFUUASJGLBWWPF-ZYSYNQLUSA-N
Related Categories
General description
Mixed indicator solutions of bromocresol green (pk 4.9) and methyl red (pk 5) give a red color in acidic conditions and green color in basic conditions with a sharp transition through grey color at pH 5.1 as the two colors are complementary.[1]
Application
Suitable for titration of morpholine
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1
Target Organs
Eyes,Central nervous system
Storage Class Code
3 - Flammable liquids
WGK
WGK 2
Flash Point(F)
51.8 °F - closed cup
Flash Point(C)
11.0 °C - closed cup
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S M Khopkar
Basic Concepts Of Analytical Chemistry (1998)
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