AO-DTBHQ stands for 2,5-Di-tert-butylhydroquinone, a hindered phenolic antioxidant with strong radical-scavenging ability. It offers high efficiency in preventing oxidative degradation in polymers, resins, adhesives, and lubricants.
This antioxidant is ideal for systems that require color stability, thermal resistance, and low volatility, making it suitable for high-temperature and long-term protection.
| Property | Typical Value |
|---|---|
| Chemical Name | 2,5-Di-tert-butylhydroquinone |
| Appearance | White to off-white crystalline powder |
| Molecular Weight | 222.32 |
| Melting Point | 127 – 130 °C |
| Purity | ≥ 99% |
| Volatility (150 °C) | < 0.3% |
| Recommended Dosage | 0.1 – 0.5 phr |
| Scenario | Why Use AO-DTBHQ |
|---|---|
| Heat-induced polymer degradation | Strong antioxidant protection |
| Color-sensitive adhesive applications | Maintains visual appearance |
| Food-grade or cosmetic packaging | Low odor and high purity |
| Long-term stability under light/heat | Delays oxidative aging |
Q1: Is AO-DTBHQ food-contact approved?
Please confirm your region’s compliance (e.g., FDA, EU). We offer food-grade variants.
Q2: Can it be combined with other antioxidants?
Yes. It works well with phosphites (e.g., AO-1076) and thioesters (e.g., AO-168).
Q3: How is it different from AO-1010 or AO-1076?
AO-DTBHQ has higher activity but is used in more niche or color-sensitive applications.
Q4: What about compatibility with adhesives?
It dissolves well in many adhesive and resin systems with minimal odor.
Q5: What are the storage conditions?
Store sealed, away from moisture and light. Shelf life is 2 years.
