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Technical Data Sheet ORANGE I

Compound Information
Product Name: ORANGE I
CAS No.: 523-44-4
Molecular Formula: C16H12N2O4S.Na
Molecular Weight: 351.33
Storage: Store at RT
Revision Date: 2026-04-15
Analytical Information
Tests Specifications
Synonym Acid orange 20, Orange I, Tropaeolin OOO-1
Appearance Orange to brown to dark red powder to crystal
Specification Reference CI 14600
λmax 474 - 478 nm (0.02 mol/L AcONH4 solution)
Absorbance (E1%1cm) ≥720 (0.02 mol/L AcONH4 solution, 474 - 478 nm)
1H NMR Pass test
IR Pass test
Disclaimer: This information relates only to the specific material designated and may not be valid for such material used in combination with anyother materials or in any other process. Such information is to be the best of the company's knowledge and believed accurate and reliable as of thedate indicated. However, no representation, warranty or guarantee of any kind, express or implied, is made as to its accuracy, reliability orcompleteness and we assume no responsibility for any loss, damage or expense, direct or consequential, arising out of use. It is the user'sresponsibility to satisfy himself as to the suitableness & completeness of such information for his own particular use.
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