Agent Name


CAS Number




Major Category



1,2-Anthraquinonediol; 1,2-Dihydroxy-9,10-anthraquinone; 1,2-Dihydroxyanthrachinon [Czech]; 1,2-Dihydroxyanthraquinone; 9,10-Anthracenedione, 1,2-dihydroxy-; Alizarin; Alizarin B; Alizarin Red; Alizarina; Alizarine; Alizarine 3B; Alizarine B; Alizarine L paste; Alizarine Lake Red 2P; Alizarine Lake Red 3P; Alizarine Lake Red IPX; Alizarine NAC; Alizarine Paste 20 percent Bluish; Alizarine Red; Alizarine Red B; Alizarine Red B2; Alizarine Red IP; Alizarine Red IPP; Alizarine Red L; Alizarine indicator; Alizarine paste 20% bluish; Alizarinprimeveroside; Alizerine NAC; Alizerine Red IPP; C.I. 58000; C.I. 58000C; C.I. Mordant Red 11; C.I. Mordant Red 11C; C.I. Pigment Red 83; C.I. Pigment Red 83C; Certiqual Alizarine; Certiqual Alizarine D; D And C Orange Number 15; D and C Orange No. 15; D and C Orange Number 15D; Deep Crimson Madder 10821; Deep Crimson Madder 10821E; Eljon Madder M; Eljon madder; Mitsui Alizarine B; Mitsui Alizarine BS; Mordant Red 11; Sanyo Carmine L2B; Turkey Red; Turkey Red (VAN); Turkey Red W; [ChemIDplus]


Anthraquinone Dyes


Red-orange crystals slightly soluble in water;[Sax]


Used as a pH indicator for the pH range of 5.8-7.2 and 10.2-11.8; [Ullmann] The parent chemical for many dyes, pigments, lakes, indicators, and biological stains; Naturally occurring in madder root; [Hawley]


Anthraquinones are toxic by ingestion: vomiting, diarrhea, kidney and liver damage, and coma; Deaths have been reported after chilldren ingested Rhamnus berries; [HSDB] Toxic by ingestion; An eye irritant; [Sax] An irritant; Harmful by ingestion, inhalation, or skin absorption; Toxic if swallowed; [Aldrich MSDS]

Exposure Assessment
Explanatory Notes

mp = 289 deg C; [Sax]

Flammability (NFPA)

1: Must be preheated

Adverse Effects

Hepatotoxin, Secondary

Links to Other NLM Databases
Toxicity Information


Chemical Information

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Related Information in HazMap

Industrial Processes with risk of exposure: