Solvent brown 20
C.I. Name/No:Solvent brown 20 ;C.I.201980
CAS 61813-86-3/72208-28-7

Synonyms: 7,7'-[(4,6-Dihydroxy-1,3-phenylene)bis(2,1-diazenediyl)]bis-1,3-naphthalenedisulfonic acid N,N'-Bis(2-methylphenyl)guanidine
Molecular structure:
Molecular formula: C₂₆H₁₈N₄O₁₄S₄· 4(C₁₅H₁₇N₃)
Molecular weight: 1695.97
Foreign relative brand:
Akasol Fast Brown K (ACD)
Atlasol Spirit Brown BW(PYL)
Luxol Fast Brown K (PYL)
Luxol Fast Brown K (DUP)
Sepisol Fast Brown K (BIMA)
Solvent Brown K [U] (GCI)
Spectrasol Fast Brown K (SPEC)

Light	Heat(℃)	Chlorine bleached	Water	Soda (5%)	hydrochloric acid (5%)
	melting point	stability
poor		175-205

Other related products: Solvent Brown 5, Solvent Brown 41