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Ethoxyquin

CAS Number
91-53-2
EC Number
202-075-7
Chemical Formula
C14H19NO
Molecular Weight
217.31 g/mol

Description

Ethoxyquin (CAS 91-53-2 ), also known by its EU food additive designation E324 and the abbreviation EMQ, is a synthetic antioxidant used to prevent oxidative degradation in animal feed, fish meal, and agricultural commodities. It protects fats, oils, and fat-soluble vitamins from rancidity during storage and transport, extending shelf life across feed and food ingredient supply chains. In aquaculture and livestock feed production, it is applied to fish meal and compound feeds. This chemical inhibits lipid oxidation and preserves nutritional value through extended storage cycles. Spice and paprika processors use it to prevent color fading and oxidative spoilage in dried botanical ingredients during processing. It also functions as a stabilizer for fat-soluble vitamins, particularly vitamins A and E, in premix formulations. This protects potency during pelleting and storage, ensuring the nutritional integrity of the final feed product. In fruit handling, it has been used as a post-harvest treatment to prevent superficial scald on apples and pears during cold storage. This application helps maintain the aesthetic quality and marketability of fresh produce over time. The product is supplied as an amber to dark brown liquid. Technical and feed-grade are the primary commercial grades, with purity levels typically at 95% or higher to meet industrial requirements for various applications. Drum and IBC packaging are standard for bulk procurement to ensure safe handling and transport. Our supply chain ensures consistent quality and availability for large-scale agricultural and industrial operations globally. Contact us for supply of Ethoxyquin Request Quote

Other Names (Synonyms)

Ethyl 2,2,4-trimethyl-1,2-dihydro-6-quinolinyl ether | E 324 | 6-Ethoxy-1,2-dihydro-2,2,4-trimethylquinoline | 2,2,4-Trimethyl-6-ethoxy-1,2-dihydroquinoline | 1,2-Dihydro-6-ethoxy-2,2,4-trimethylquinoline | 1,2-Dihydro-2,2,4-trimethyl-6-ethoxyquinoline | 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline | Santoquin | EMQ | E324

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point~0 °C (approx)
Boiling Point123-125 °C @ Press: 2 Torr
Density1.029-1.031 g/cm³ @ Temp: 25 °C
Flash Point137 °C
AppearanceTransparent yellow or brown viscous liquid.
ColorYellow to Very Dark Brown to Thick
Formneat
Water Solubility<0.1 g/100 mL at 20 ºC
Vapor Pressure0.035Pa at 25℃
Refractive Index1.569~1.571
Log P3.39

Safety & Handling

Warning
GHS07· IrritantGHS09· EnvironmentGHS08· Health Hazard

Hazard Statements

H302Harmful if swallowed
H317May cause an allergic skin reaction
H320Causes eye irritation
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H411Toxic to aquatic life with long lasting effects

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29334900
Storage Class10 - Combustible liquids
WGK (Germany)1