Ethoxyquin

Independent reference data for Ethoxyquin (CAS 91-53-2), compiled from public chemistry databases.

Registry identifiers across databases

Computed descriptors

Physicochemical values on record

Documented uses on record

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]Farming (Feed Additives) [Category: Industry]

Synonyms and trade names

ethoxyquin; 91-53-2; 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline; Santoquin; Ethoxyquine; Antioxidant EC; Stop-Scald; Nix-Scald; Santoquine; Niflex; Santoflex A; Santoflex AW; Dawe's nutrigard; Nocrack AW; Quinol ED; Aries Antox

Regulatory listings held on file

Regulatory & Food Contact	FDA Substance added to food: ANTIOXIDANT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

GHS hazard classification

Reported hazard statements	H302, H411 (36.9%), H317, H320, H370, H372

H302: Harmful if swallowed [Warning Acute toxicity, oral]

P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)

What the public record says

Ethoxyquin powder · CAS 91-53-2 · C14H19NO. UNII 9T1410R4OR. Boiling Point: 253 to 257 °F at 2 mmHg (NTP, 1992); Boiling Point: 123-125 °C AT 2 MM HG; Melting Point: Approximately 0 °C.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.