C.I. Pigment Red 49
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C.I. Pigment Red 49
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CAS No:
1248-18-6
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Formula:
C20H14N2O4S.Na
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Chemical Name:
C.I. Pigment Red 49
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Synonyms:
1-Naphthalenesulfonic acid,2-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-,sodium salt (1:1);C.I. Pigment Red 49,monosodium salt;1-Naphthalenesulfonic acid,2-[(2-hydroxy-1-naphthalenyl)azo]-,monosodium salt;C.I. Pigment Red 49;11935 Red;C.I. 15630;Brasilaca Red R;Britone Red Y;Carnelio Pale Lithol Red;Certiqual Lithol Red;Eljon Lithol Red R;Enialit Red R;FD and C Red No. 10;Graphic Red Y;Irgalite Red RL;Kromon Sodium Lithol;Lake Red R;Lake Red RL;Light Red RS;Lithol red;Lithol Red R;Lithol Red 3GS;Lithol Red 17676;Lithol Red RL 151;Lithol Red RS;Lithol Red Sodium Salt;Lithol Red Toner;Lithol Toner;Lithol Toner Extra Light 5000;Lithol Toner Sodium Salt RT 314;Lithol Toner YA 8003;Lutetia Red R;Monolite Red R;New York Red;Ohio Red;Oralith Red SR Water Soluble;Plastoresin Red SR;Recolite Red LYS;Resamine Red RB;Resamine Red RC;Segnale Red R;Signal Red;Siloton Red R;Sodium Lithol;Sodium Lithol Red 20-4018;Tertropigment Red LR;Undeveloped Lithol Toner;Vulcafix Red R;Vulcol Scarlet 2G;D and C Red No. 10;Lithol Red RB Extra;Sodium Lithol Red;Lithol Red Lake;Sunburst Red;Atul Pigment Red RS sodium salt;Lithol Red 3580;Red No. 205;Lithol Red B;Japan Red 205;Pigment Red 49;D&C Red No. 10;Mingyuan 3165;Lithol Big Red;12237-77-3
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CAS No:
C.I. Pigment Red 49 Basic Attributes
400.38299
400.04900
214-998-2
IY4YV0PVDA
DTXSID2021230
2927000090
C.I. Pigment Red 49 Use and Manufacturing
This product is rarely used in organic pigments. It is often used to prepare C.I. Pigment Red 49:1 and 49:2 by one-step lakeing. The lake pigment is an important red pigment variety. Reaction equation Operation process: Add 2000L of water and hydrochloric acid in the diazonium kettle and add 346kg of Tobic acid within 10min, add 2000～3000kg of ice and add 600L of 23% sodium nitrite solution, stir for 3h to complete the reaction. At this time, the diazonium salt crystallized out and vacuum filtration, and the filter cake was beaten with 6000L water for use. Add 3000L of water to the reactor, add 300kg of β-naphthol solution and 180L of caustic soda solution, stir quickly to dissolve, and then add to 8000L of water. Add the prepared diazonium liquid to the coupling liquid within 1 h below the liquid surface, at a temperature of 15-20 ℃, and stir for 3 h after coupling to complete the reaction. Add 300kg Rock solt. After the steam is heated to boiling and kept for 0.5h, it is filtered immediately. And air-dried for 8-10h to obtain 2000-2500kg of filter cake, which can be used as lake, and dry it to obtain 640kg of dry product.
See CI Pigment Red 49:1 and 49:2
1-Naphthalenesulfonic acid, 2-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1): ACTIVE
Cosmetics -> Cosmetic colorant
Computed Properties
Molecular Weight:400.4
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:400.04937236
Monoisotopic Mass:400.04937236
Topological Polar Surface Area:111
Heavy Atom Count:28
Complexity:653
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
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