Formaldehyde (HCHO) is a colorless, strongly pungent volatile organic compound (VOC) that is a gas at room temperature and easily soluble in water. It is an important intermediate in many industrial production and biological metabolic processes, widely used in the following fields: synthetic resins (such as urea formaldehyde resins, phenolic resins), adhesives, plastics, textile finishing agents, etc.
Formaldehyde is classified as a Group 1 carcinogen (clearly carcinogenic to humans) by the World Health Organization (WHO) and the International Agency for Research on Cancer (IARC), and its hazards mainly manifest in:
①Short term exposure:
Irritation: Direct contact can cause redness and swelling of the eyes, burning sensation in the throat, skin allergies, etc.
Respiratory symptoms: leading to coughing, chest tightness, exacerbation of asthma, etc.
②Long term exposure:
Carcinogenic risk: Long term inhalation of formaldehyde may induce nasopharyngeal carcinoma, leukemia, etc.
Chronic toxicity: damages the immune system, nervous system, and is particularly harmful to pregnant women, children, and the elderly.
Our Aldehyde Scavenger is used to remove residual formaldehyde and acetaldehyde from polymers, especially suitable for removing acetaldehyde from PET to meet the requirements of food and beverage packaging. It is also suitable for removing formaldehyde and acetaldehyde from acetate resins, adhesives, and paint coatings.
PET (polyethylene terephthalate) is a commonly used material for beverage bottles. Theoretically, pure PET itself does not contain formaldehyde, but the following factors may cause it to contain trace amounts of formaldehyde:
① PET may undergo partial decomposition during high-temperature processing (such as melt extrusion), producing trace amounts of formaldehyde.
② The metal catalysts used in the production of PET, such as antimony compounds, may promote side reactions and generate formaldehyde.
③ Some colorants or processing aids may decompose and release formaldehyde under high temperature or light exposure.
Contact us! We will respond within 48 hours.
Post time: Mar-17-2025