Definition Lactic acid, also known as 2-hydroxypropanoic acid or α-hydroxypropionic acid, is an organic acid containing both hydroxyl and carboxyl functional groups. It appears as a colorless to pale yellow syrup-like liquid or solid and is widely used in food,…
Definition Methyl Methacrylate (MMA), chemically known as methyl methacrylate, is an unsaturated ester derived from methacrylic acid. It is a colorless, transparent liquid with a characteristic odor and is one of the most important monomers used in polymer and plastics…
Definition Methacrylic acid (MAA), also known as 2-methylacrylic acid or 2-methylpropenoic acid, is an unsaturated carboxylic acid widely used as an intermediate in the production of acrylic materials and specialty polymers. As one of the most important building blocks in…
Definition Hydrocyanic acid (HCN), also known as hydrogen cyanide, is a colorless, highly volatile chemical compound composed of hydrogen, carbon, and nitrogen. It is one of the most important industrial cyanide chemicals and serves as a key intermediate in the…
Definition Polyglycolic Acid (PGA), also known as poly(hydroxyacetic acid), is a biodegradable aliphatic polyester produced from glycolic acid. Due to its excellent mechanical strength and hydrolytic degradability, PGA has become one of the most important bioabsorbable polymers used in medical…
Definition Carbon disulfide (CS₂), also known as carbon bisulfide, is a sulfur-containing organic compound composed of one carbon atom and two sulfur atoms. It is a colorless to pale yellow liquid with a characteristic odor and is widely used as…
Definition Isosorbide, chemically known as 1,4:3,6-Dianhydro-D-sorbitol, is a bio-based organic compound produced through the dehydration of sorbitol. It has a molecular weight of 146.14 and is characterized by a rigid bicyclic structure formed by two fused tetrahydrofuran rings. As a…
Definition Silane, also known as silicon hydride, refers to a family of compounds composed of silicon and hydrogen. Similar to hydrocarbons, silanes form a homologous series with the general formula SiₙH₂ₙ₊₂. The simplest and most important member of this family…
In melt crystallization, the disparity in results is often striking. Some materials achieve significant purity leaps after a single stage, while others show virtually no differentiation in assay levels between the product, mother liquor, and sweating liquor, even after completing…
Melt crystallization is not a universal solution for all chemical systems. While some materials exhibit significant purity gains after a single stage—with further improvements in subsequent stages—others may crystallize without effective mother liquor discharge or noticeable sweating, resulting in stagnant…