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Stilbazo [Spectrophotometric reagent for Al and other metals]
(CAS RN:1571-36-4 Product Number:A5011)


Synonym Stilbene-4,4'-bis[(1-azo)-3,4-dihydroxybenzene]-2,2'-disulfonic Acid Diammonium Salt

General Information

Product Number A5011

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Purity/Analysis Method
Storage Temperature
M.F. / M.W. C26H26N6O10S2=646.65
CAS RN 1571-36-4
Related CAS RN
MDL Number MFCD00045752
Packaging and Container
  • Product Details
  • Safety & Regulations


Appearance Red to Dark blue to Black powder to crystal
Molar absorbance(Al complex) min. 20,000(502.0 to 512.0 nm)
Absorbance(E1%1cm) min. 600(pH 5.0 buffer sol., 408.0 to 412.0 nm)
Drying loss max. 10.0 %


PubChem SID 87563105
EC Number 216-389-7


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.

Transport Information

HS Number 2927000090


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