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4-Dimethylaminoazobenzene-2'-carboxylic acid sodium salt, Acid Red 2
M 2229
C15H14N3NaO2
29270090
18%
845-10-3
291.28
Bottle / Drum
M 2229 (OTTO) Methyl red sodium salt Cas 845-10-3 - used for pH detection.
Methyl Red sodium salt is the sodium salt of Methyl Red. Methyl red is an indicator dye that turns red in acidic solutions. It is a pH indicator, turning red under pH 4.4, yellow over pH 6.2, and orange in between those values. It is used in microbiology in the Voges-Proskauer test to identify bacteria that produce stable acids through mixed acid fermentation of glucose. Methyl-red positive bacteria include Proteus vulgaris and Escherichia coli. Methyl-red negative bacteria include Enterobacter aerogenes and Serratia marcescens.
Hematology & histology
> 90%
Powder
Yellowish orange to orange to red
430-440 nm
> 580
4.2-6.2
Max 5%
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filterWGK Germany 3
DisclaimerThe above particulars do not release the customer from the obligation to carry out an inspection of goods received. For laboratory use only. Not for drug, medical, household, or any other unauthorized application. We assume no liability for misuse or unauthorized application of the product. Please test before use.