Propionic Acid National Standard (GB Specifications)
The national standard for propionic acid clearly defines its appearance: it shall be a colorless, transparent liquid with a pungent odor, and its color must meet specific visual colorimetric standards (e.g., with an APHA value not exceeding a specified limit) to ensure the product meets appearance quality requirements.
In terms of purity, the national standard mandates a minimum propionic acid content of 99.0%. This high-purity requirement ensures that propionic acid delivers stable and reliable performance across various industrial production and application scenarios. Moisture content is a critical factor affecting product quality; per the standard, water content must be controlled below 0.5% to prevent excess moisture from interfering with its chemical properties and performance. Acidity, as a key indicator, is also clearly specified: the acidity (expressed as mass fraction, calculated as propionic acid) must fall within a defined range to guarantee the product’s chemical stability and reactivity meet requirements. Heavy metal content is strictly limited in the standard—lead, mercury, and other heavy metals are restricted to extremely low levels, typically measured in ppm (parts per million), to ensure safety for use in food, pharmaceutical, and other sensitive industries.
The national standard also imposes precise requirements on density. At a specified temperature (e.g., 20°C), the density must fall within a defined range, reflecting whether the product’s physical properties comply with standards. Boiling range is another key consideration: propionic acid must have a boiling range of generally 140°C – 142°C, ensuring its thermal stability and volatility meet corresponding industrial demands. Chloride content is strictly regulated, with the standard requiring chloride levels to be below a specific threshold (e.g., 0.001%) to prevent adverse impacts on product quality and subsequent processing. Iron content is also subject to clear limits, typically not exceeding 0.0001%, to avoid iron elements affecting the color, stability, and performance of propionic acid in certain specialized applications.
Regarding solubility, the national standard requires propionic acid to exhibit good solubility in specific solvents (e.g., ethanol, diethyl ether), allowing complete miscibility at certain ratios to meet formulation requirements across different application scenarios.
Shandong Pulisi Chemical Co., Ltd. is a specialized manufacturer and supplier of high-quality industrial-grade propionic acid in China, dedicated to delivering consistent purity, reliable supply, and tailored solutions for global industrial clients. Our propionic acid is produced under strict GB/T 10615 standards, with premium grade purity reaching ≥99.5% and first grade at ≥99.0%, featuring low moisture, low iron content, and controlled heavy metal levels to meet the demanding requirements of diverse end-use applications.
Manufactured via advanced propylene oxidation technology, our propionic acid ensures stable chemical properties, excellent solubility, and consistent quality batch after batch. It serves as a key intermediate in organic synthesis, plastic manufacturing, electroplating processes, feed and food preservation, and pharmaceutical and agrochemical production. Supported by our in-house quality control laboratory and comprehensive testing protocols, every shipment is accompanied by full COA, MSDS, and other compliance documents to facilitate smooth import and use worldwide.
With over years of export experience to Asia, Europe, the Middle East, and beyond, we offer flexible packaging options, competitive pricing, and reliable delivery terms including FOB, CIF, and DDP. Whether you require small trial orders or large-scale bulk supplies, our dedicated team is ready to provide responsive technical support and customized service to meet your unique business needs.
Post time: Apr-28-2026