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Merck
CN

318728

Bromocresol Green/Methyl Red, mixed indicator solution

in methanol

Synonym(s):

Tetrabromocresolsulfonphthalein

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About This Item

NACRES:
NA.47
PubChem Substance ID:
329753931
UNSPSC Code:
12171500
EC Number:
200-659-6
MDL number:
MFCD00134126

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Product Name

Bromocresol Green/Methyl Red, mixed indicator solution, in methanol

InChI key

MFUUASJGLBWWPF-ZYSYNQLUSA-N

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+

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

form

liquid

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

Quality Level

100

Related Categories

Application

Suitable for titration of morpholine

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.

signalword

Danger

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

3 - Flammable liquids

wgk

WGK 2

flash_point_f

51.8 °F - closed cup

flash_point_c

11.0 °C - closed cup

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SHBS1516
STBK8057
STBK5191
STBK4266
STBK4251

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S M Khopkar
Basic Concepts Of Analytical Chemistry (1998)

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