Pigment Orange 5

Also known as: 1-((2,4-Dinitrophenyl)azo)-2-naphthol, 1-((2,4-dinitrophenyl)azo)-2-naphthalenol, 1-(2,4-Dinitrophenylazo)-2-naphthol, 1-[(2,4-Dinitrophenyl)azo]-2-naphthol,Permanent red 2G, 1-[(2,4-dinitrophenyl)azo]-2-naphthol, 1-[(E)-(2,4-Dinitrophenyl)diazenyl]-2-naphthol, 1-[(E)-(2,4-dinitrophenyl)diazenyl]naphthalen-2-ol, 2-Naphthalenol, 1-((2,4-dinitrophenyl)azo)-, 2-Naphthalenol, 1-[(2,4-dinitrophenyl)azo]-, 2-Naphthalenol, 1-[(E)-2-(2,4-dinitrophenyl)diazenyl]-, 2-Naphthol, 1-((2,4-dinitrophenyl)azo)-, 2-Naphthol, 1-[(2,4-dinitrophenyl)azo]-, 2-naphthalenol, 1-[(E)-(2,4-dinitrophenyl)azo]-, 964718, C.I. pigment orange 5, CORANGE17, DAIDAI203, EINECS 222-429-4, Litholechtorange, MFCD00059524

Pigment Orange 5 (CAS 3468-63-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H10N4O5 and a molecular weight of 338.274 g/mol. Key properties include a melting point of 302ºC, a boiling point of 597.9±50.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 315.4±30.1 °C. It is classified under GHS with signal word Warning and hazard statements H341 — Suspected of causing genetic defects and H351 — Suspected of causing cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3468-63-1

Jingsj CID

J-41984-1

Molecular Formula

C₁₆H₁₀N₄O₅

Molecular Weight

338.274 g/mol

Category

Organic Compounds

Last updated

8/21/2026