Direct Brown 2
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Direct Brown 2
C.I.Direct Brown 2
C.I.22311
CAS:2429-82-5
Synonymous names:Apollo Direct Brown M (THC);Atul Direct Brown MR (AP);Atule Direct Brown MY (AP);Atul Leather Brown DMR (AP);Direct Brown M (NJC, NIEC,HEB);Direct Brown M104A (STIE);Direct Brown MM (NIEC);Direct Brown MN (NIEC);Direct Deep Brown MN (STIE);Dycosdirect Brown M (SHC);Rifa Direct Brown M (RIFA)
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Description
C.I.Direct Brown 2
C.I.22311
CAS:2429-82-5
Synonymous names:Apollo Direct Brown M (THC);Atul Direct Brown MR (AP);Atule Direct Brown MY (AP);Atul Leather Brown DMR (AP);Direct Brown M (NJC, NIEC,HEB);Direct Brown M104A (STIE);Direct Brown MM (NIEC);Direct Brown MN (NIEC);Direct Deep Brown MN (STIE);Dycosdirect Brown M (SHC);Rifa Direct Brown M (RIFA)
Physicochemical Properties: Brownish powder. Soluble in water (deep reddish-brown), ethanol (brownish-red), and cellosolve (reddish-brown). Slightly soluble in acetone. In concentrated sulfuric acid, it appears as purple, turning light reddish-brown upon dilution. Forms deep brown with concentrated hydrochloric acid and orange-brown with concentrated sodium hydroxide. Sensitive to salt.
Applications: For dyeing cellulose fabrics. Often combined with Direct Dark Green B, Direct Black EX, and Direct Yellow Brown 3G. Also used for printing, leather, and pigment manufacturing.
