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CAS RN: 1571-36-4 | Product Number: A5011

Stilbazo [Spectrophotometric reagent for Al and other metals]

  • Stilbene-4,4'-bis[(1-azo)-3,4-dihydroxybenzene]-2,2'-disulfonic Acid Diammonium Salt
4   ≥20 
4   11  

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Product Number A5011
Molecular Formula / Molecular Weight C__2__6H__2__6N__6O__1__0S__2 = 646.65  
Physical State (20 deg.C) Solid
CAS RN 1571-36-4
PubChem Substance ID 87563105
MDL Number


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 %
Properties (reference)
Maximum Absorption Wavelength 413(pH 5.0 buffer sol.) nm
Solubility in water Soluble
Solubility (slightly sol. in) Alcohol
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
EC Number 216-389-7
Transport Information:
HS Number 2927000090
PubMed Literature

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