Lithol® rubine calcium salt

Individually, diarylide yellow AAA, also known as benzidine yellow or Pigment Yellow 12 (PY 12), is made in the greatest amount at 30 million lb, followed by phthalocyanine blue or Pigment Blue 15 3 (PB 15 3) at 28 million lb and Lithol rubine calcium salt or Pigment Red 57 1 (PR 57 1) at 26 million lb. 

Pigment Red 57, calcium salt [5281-04-9] 15850 1 BONA (Ca salt) (Lithol Rubine B or 4B toner) coupling of dia2oti2ed 2- amino-5-methyl-ben2enesulfonic acid with 3- hydroxy-2-naphthoic acid, foUowed by salt formation... 

The first synthetic organic pigments were used to shade or tone the weaker colorants and became known as toners. Metal toners usually contain one sulfonic acid group and often a carboxyUc acid group. The pigment is rendered iasoluble, ie, laked Ai a heavy metal cation. An example of a calcium salt is Lithol Rubine BK [5858-81-1] Vhl) (Cl Pigment Red 57 Cl 15850). 

LltholRubine. Lithol Rubine (Pigment Red 57 [5281-04-9]), also referred to as 4B toner, is the calcium salt of diazotized 2-amino-5-methylbenzenesulfonic acid coupled with 3-hydroxy-2-naphthoic acid. It ranks high among organic pigments in production volume and use. 

C.l. Pigment Red 57 1 C.l. Pigment Red 57, calcium salt (1 1) Calcium 3-hydroxy-4-((4-methyl-2-sulph-onatophenyl)azo)-2-naphthoate CCRIS 4903 Cl 15850 1 (Ca salt) D C Red No. 7 EINECS 226-109-5 3-Hydroxy-4-((4-methyl-2-sulfophenyl)azo)-2-naphtti-alenecarboxylic acid, calcium salt Hydroxy-4-( 2-sulfo-p-tolyl)azo)-2-naphthaleneoarboxylic acid, calcium salt (1 1) Lithol rubin B ca 2-NapMhalenecarboxylic acid, 3-hydroxy-4-((4-methyl-2-sulfophenyljazo)-, calcium salt. 

Calcium salt of Lithol Rubine B from Kishi Kasei Co. 

Synonyms Cl 15850 1 3-Hydroxy-4-[(4-methyl-2-sulfophenyl) azo]-2-naphthalenecarboxylic acid calcium salt Lithol rubin B Ca Pigment red 57 1... 

Lithol rubine Pigment Red 57 (15850). Azo pigment made by diazotizing paratoluidine-meto-sulfonic acid, and coupling with 3-hydroxy-2-naphthoic acid. Pigment is used as the calcium salt. Most frequently encountered in the resinated form, it is characterized by its distinctly brilliant deep masstone and its blue intense tint. 

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