Hydroxypropyl starch ether (HPS), as a biodegradable modified starch, possesses excellent environmental properties. Its production and application processes comply with multiple international and domestic environmental standards, particularly excelling in the use of renewable raw materials, low toxicity, and biodegradability.
Key Environmental Certifications and Green Attributes:
Biodegradability Certification (OECD 301 Series)
Hydroxypropyl starch ether is derived from natural starch and retains good biodegradability even after appropriate chemical modification. Multiple studies have shown that under standard testing conditions (such as OECD 301B), its biodegradability rate can reach over 70% within 28 days, meeting the definition of "easily biodegradable substance."
Food-Grade Safety Certification Supporting Environmental Compliance
Although not a direct environmental certification, HPS has passed the FAO/WHO Food Safety Assessment (ADI does not specify) and FDA GRAS certification, indicating extremely low toxicity to humans and the environment, making it suitable for food contact materials and daily chemical products with high environmental requirements.
Recommendation Criteria for Green Building Materials in China
In the building materials industry, HPS is commonly used as an environmentally friendly additive in green building materials such as dry-mix mortar and putty. Although there is currently no dedicated environmental label for HPS, its application helps products meet the requirements of the "Green Building Materials Evaluation Standard" (GB/T 51358) regarding low VOCs, non-toxicity, and renewable resources.
ISO 14001 Environmental Management System Endorsement
Many HPS manufacturers (such as Shandong Tenesi Cellulose Co., Ltd.) have passed ISO 14001 environmental management system certification, ensuring controlled wastewater and exhaust gas emissions, efficient resource utilization, and embodying a life-cycle environmental management philosophy.
Non-ionic Structure Brings Environmental Advantages
HPS is a non-ionic modified starch with strong resistance to salt and calcium, good stability in complex water qualities, reducing material waste caused by flocculation or inactivation, indirectly improving resource utilization efficiency, and reducing environmental burden.
