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Beryllon II
(CAS RN:51550-25-5 Product Number:B0452)


Beryllon II
Synonym 8-(1,8-Dihydroxy-3,6-disulfo-2-naphthylazo)-1-naphthol-3,6-disulfonic Acid Tetrasodium Salt
Synonym 2-(8-Hydroxy-3,6-disulfo-1-naphthylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic Acid Tetrasodium Salt

General Information

Product Number B0452

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Purity/Analysis Method
Storage Temperature
M.F. / M.W. C20H10N2Na4O15S4=738.50
CAS RN 51550-25-5
Related CAS RN
MDL Number MFCD00046409
Packaging and Container
  • Product Details
  • Safety & Regulations


Lambda max. 544.0 to 548.0 nm(H2O)
Absorbance(E1%1cm) min. 300 (H2O, 544.0 to 548.0 nm)(after drying)
Drying loss max. 15.0 %
Ignition residue(Sulfate) 36.5 to 40.0%(after drying)


PubChem SID 87563489
EC Number 257-273-6


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 3204120090


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