Butylated hydroxyanisole
CAS 25013-16-5
EC 246-563-8
Formula C11H16O2
MW 180.244 g/mol
Vitamins & Nutrients Food & NutritionPharmaceuticals & HealthcarePersonal Care & CosmeticsPlastics & PolymersLubricants & Metalworking Antioxidant & StabilizerPreservation & Biocide
Description
Butylated hydroxyanisole (BHA) is a synthetic phenolic antioxidant supplied under trade names including Embanox, Sustane 1F, Tenox BHA, and Protex. Assigned CAS 25013-16-5, it functions as a lipid-soluble stabiliser recognised under food additive frameworks in multiple jurisdictions, though it does not carry an EU E-number for direct food use.
In edible fats, oils, and packaged foods, BHA retards oxidative rancidity by donating hydrogen atoms to free radicals, interrupting the autoxidation chain. In polymer and rubber compounding, it acts as a processing stabiliser, protecting against thermal degradation during melt processing. Cosmetic formulators apply it at low concentrations to delay oxidative breakdown of emollient oils.
BHA is available in food-grade and technical-grade crystalline flake form, with quality benchmarks including FCC and Ph.Eur. specifications depending on application. The substance is registered under REACH and classified under HS code 29093090. Packaging typically ranges from fibre drums to bulk container formats for industrial volumes.
In edible fats, oils, and packaged foods, BHA retards oxidative rancidity by donating hydrogen atoms to free radicals, interrupting the autoxidation chain. In polymer and rubber compounding, it acts as a processing stabiliser, protecting against thermal degradation during melt processing. Cosmetic formulators apply it at low concentrations to delay oxidative breakdown of emollient oils.
BHA is available in food-grade and technical-grade crystalline flake form, with quality benchmarks including FCC and Ph.Eur. specifications depending on application. The substance is registered under REACH and classified under HS code 29093090. Packaging typically ranges from fibre drums to bulk container formats for industrial volumes.
Physical Properties
| Melting Point | 48-55 °C |
| Boiling Point | 264-270 °C @ Press: 733 Torr |
| Density | 0.9976 (rough estimate) |
| Flash Point | >230 °F |
| Appearance | Log Kow 5. 3. Values above 3.0 are likely to bioaccumulate in aquatic organisms |
| Color | White to pale yellow |
| Odor | mild rubbery |
| Form | Crystalline Flakes or Crystals |
| Water Solubility | <0.1 g/100 mL at 18.5 ºC |
| Refractive Index | 1.4910 (estimate) |
| Log P | 3.00 |
Safety & Handling (Learn More)
Warning GHS07 GHS08 GHS09
H
H302H303H315H317H319H335H336H351H361H371H401H411
P
P203P260P261P264P270P271P272P273P280P318P319P321P330P391P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29093090 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
2-tert-butyl-4-methoxyphenolBOABHAprotexEmbanoxtenoxbhasustane1f
Related Products
Raw Materials
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