Understanding TBHQ Purity and Specifications: A Buyer's Guide
Tert-Butylhydroquinone (TBHQ), CAS 1948-33-0, is a chemical compound valued for its robust antioxidant capabilities, particularly in the food and industrial sectors. For procurement managers and product formulators, sourcing TBHQ of the correct purity and specifications is crucial to ensure the efficacy and safety of the end products. NINGBO INNO PHARMCHEM CO.,LTD., a reputable manufacturer and supplier, aims to provide clarity on these vital aspects.
The primary specification for TBHQ, especially for food-grade applications, is its purity level. High-quality TBHQ typically boasts a purity of 99.0% or higher. This is critical because even small amounts of impurities can affect the performance, color, or safety profile of the final product. Key impurities to monitor include di-tert-butylhydroquinone (often specified as ≤0.20%), tert-butylbenzoquinone (≤0.20%), and hydroquinone (≤0.10%). Low levels of residual toluene (≤0.00250%) and heavy metals (≤0.00020%) are also indicative of a high-quality product and are essential for regulatory compliance.
Appearance is another important characteristic. TBHQ is generally described as a white to pale gray crystalline powder, sometimes appearing as white or yellowish powder in food-grade applications, with a slight, often described as unpleasant, odor. Its solubility profile is also noteworthy: it readily dissolves in organic solvents like ethanol, ethyl ester, and vegetable oils, but is hardly soluble in water. This solubility is a key factor in its application in fatty food products.
For industrial applications, such as in the stabilization of insecticides or as an intermediate for dyes and pharmaceuticals, the purity requirements may be equally stringent, although specific grades might vary. Understanding the melting point, which typically ranges from 126.5-128.5°C, can also serve as an indicator of purity and identity.
When considering purchasing TBHQ, it is advisable to request a Certificate of Analysis (CoA) from your supplier. This document will detail the specific batch's properties against the agreed-upon specifications. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to transparency and quality. We invite you to contact us for competitive TBHQ prices and to learn more about the precise specifications of our products. Partner with us to ensure you are buying reliable and pure TBHQ for your critical applications.
Perspectives & Insights
Silicon Analyst 88
“TBHQ is generally described as a white to pale gray crystalline powder, sometimes appearing as white or yellowish powder in food-grade applications, with a slight, often described as unpleasant, odor.”
Quantum Seeker Pro
“Its solubility profile is also noteworthy: it readily dissolves in organic solvents like ethanol, ethyl ester, and vegetable oils, but is hardly soluble in water.”
Bio Reader 7
“For industrial applications, such as in the stabilization of insecticides or as an intermediate for dyes and pharmaceuticals, the purity requirements may be equally stringent, although specific grades might vary.”