Agent Name


CAS Number




Major Category

Other Uses


1,2-Dihydro-2,2,4-trimethyl-6-ethoxyquinoline; 1,2-Dihydro-6-ethoxy-2,2,4-trimethylquinoline; 2,2,4-Trimethyl-6-ethoxy-1,2-dihydroquinoline; 6-Ethoxy-1,2-dihydro-2,2,4-trimethylquinoline; 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline; Alterungsschutzmittel EC; Amea 100; Antage AW; Antioxidant EC; Aries Antox; Dawe's nutrigard; EMQ; EQ; Ethoxychin [Czech]; Ethoxyquin [ISO]; Ethoxyquine; Niflex; Niflex D; Nix-Scald; Nocrac AW; Nocrack AW; Permanax 103; Quinol ED; Quinoline, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl-; Santoflex A; Santoflex AW; Santoquin; Santoquine; Santoquine (VAN); Stop-Scald; [ChemIDplus]


Animal Feed Additives


Yellow liquid; [Merck Index] Light yellow to dark brown viscous liquid with an odor like mercaptans; Darkened by light and air; [CAMEO] Formulated as an emulsifiable concentrate and an impregnated wrap; [Reference #2] Dark brown liquid; [Aldrich MSDS]


Used as an additive to animal feed; [Kanerva, p. 1793] Used as an antioxidant for food and feed and as anti-degradation agent for rubber; [Merck Index] Also used as a post-harvest dip for apples and pears; [ChemIDplus] Registered in the US as an antioxidant for the control of post-harvest scald (browning) in pears; Also registered with the FDA as a preservative for animal feed, dehydrated crops, sorghum, and for color preservation in chili powder, paprika, and ground chili; [Reference #2]


Allergic contact dermatitis reported in a feed mill worker; [Kanerva, p. 1793] A skin irritant; May cause reversible changes to the liver; Reports of contact dermatitis in animal feed employees; [HSDB] May polymerize on exposure to light and air; A skin and eye irritant; May cause skin sensitization; [CAMEO] Strongly associated with cases of occupational contact dermatitis; Causes increased liver enzymes in animal experiments; [Reference #2]

Reference Link

Occupational dermatitis in animal feed mill workers

Exposure Assessment
Vapor Pressure

0.000132 mm Hg

Reference Link

EPA Pesticide Chemical Search

Adverse Effects
Skin Sensitizer



Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Biomedical References

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Related Information in HazMap

Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: