Citric acid ester

• CAS No:

77-94-1

• Formula:

C18H32O7

• Chemical Name:

Citric acid ester

Description

Citrate esters are a class of ester compounds produced by esterification of citric acid with alcohols. They are low-toxic, odorless, and non-volatile, and the citric acid and alcohol produced during decomposition in living organisms do not aggregate, do not produce smoke and dioxin when burned, and can be naturally degraded in the environment, so they are regarded as environmentally friendly plasticizers and are widely used in the plastics industry as substitutes for phthalate esters.

Citric acid ester Basic Attributes

TBC molecular formula C18H32O7, molar mass 360-44 g/mol, colorless or light yellow liquid, can be mixed with acetone, CCl4, mineral oil, acetic acid, castor oil, alcohol and its solvents; insoluble in water, non-toxic, tasteless, small volatility, heat-resistant, light-resistant, water-resistant, and vinyl resin, cellulose acetate, cellulose acetylbutyrate, ethylcellulose, benzylcellulose, etc., compatibility. TBC is a plasticizer with good plasticizing efficiency; it also has anti-bacterial and non-bacterial growth, non-irritant, flame retardant and degradability; LDG50 oral >7 mL/(kg body weight) for rats, >3-5 mL/(kg body weight) for cats, and there is no organ abnormality in rats after 8 weeks of feeding with 10% TBC; TBC does not dissolve in the animal body but is discharged out of the body, which has no effect on human beings and is safe; quality of TBC Domestic divided into high-quality products and first-grade products [2], the indicators are: appearance of colorless and transparent liquid, nearly colorless and transparent liquid; color (iodine colorimetry) ≤ 50; acidity (mg KOH/g in citric acid) ≤ 0-015; moisture ≤ 0-3; content ≥ 99-7%; d2041-037 ~ 1-047.

Citric acid ester Use

Food packaging materials: citrate can be used in food packaging materials, such as PVC pelletizing, in line with food safety requirements.

Cosmetics: In cosmetics, citrate is commonly used as an odorant and diluent, and can also be used in the manufacture of ink coatings, medical products and children's soft toys.

Mortar additives: In mortar, citrate can improve the performance of mortar, improve its plasticity and ductility, and at the same time slow down the speed of condensation, easy to construction operation.

The chemical properties of citrate make it show good application prospects in many fields. For example, triethyl citrate has a weak fruity aroma, which makes it suitable for use as a flavoring agent and diluent in cosmetic fragrances, as well as a plasticizer for cellulose-based and vinyl-based thermoplastic resins. In addition, the environmental characteristics of citrate are in line with the requirements of sustainable development, and will not cause pollution to construction workers and the environment.