TINUVIN 571 23328-53-2

Use:

This product is mainly used in amikacin,glutathione dehydrants,as well asin synthesis of acid anhydride,aldehyde,    ketone,isocyanate;when  it  is  used  as  dehydrating  condensing  agent,it  reactsto  dicyclohexylurea  through  short-time reaction  under  normal  temperature.

This product can also be used in synthesis of peptide and nucleic acid.It is easy to use this product to react with compound of free carboxy and amino-group  into  peptide.

This  product  is widely  used  in  medical,health,make-up and  biological  products,and other synthetic fields.

Packing:

It is packed in 25L or 220LBlue light-proof plastic barrel packaging with net content 25kg/bucketor  180kg/bucket or other  specifications  of  packing  on  customers'request.

Notes  for  use:

Itis  irritant.When  its  vaporor  liquid  touched  skin,it  will  lead  to  dermatitis;when  eye  contacts  it,it  will  lead  to  hurt  of eye cornea.Need to protect when using it.

It  should  be  storedin  cool,ventilated,dry  warehouse.

Zentra Chemical, headquartered in Hangzhou, China, is aiming to be a global player in chemical trading and integrated solutions.

Specializing in Pharmaceutical intermediates, Agrochemical intermediates, Fine chemicals, Herbal extracts and Cosmetic ingredients, we deliver end-to-end services spanning sourcing, supply chain optimization, customized synthesis, cost management, and quality assurance, with all stage support from sample, pilot, registration and commercial

Our mission is to empower clients worldwide with agile, sustainable, and value-driven partnerships in the ever-evolving chemical industry.

Competitive Advantages

• Strategic Location: Based in Hangzhou at the heart of Yangtze River Delta economic zone with global reach
• Expert Team: International team of chemical engineers, trading specialists and supply chain professionals
• Quality Commitment: Rigorous supplier selection and ISO-certified quality management systems
• Sustainable Development: Partnering with eco-friendly manufacturers to promote green chemistry

Vision & Mission
Driven by the philosophy of “Chemistry Connects the Future,” Zentra Chemical strives to be a pioneering force in the global chemical sector. By bridging innovation, efficiency, and sustainability, we aim to build long-term partnerships that redefine industry standards and foster a greener, smarter chemical ecosystem.

Global Reach, Local Expertise – Zentra Chemical is your trusted partner for chemical excellence.

What are the MOQ and lead time?

MOQ varies (high-value chemicals may negotiate to g-kg-level).

Lead time typically 2-4 weeks, with expedited options upon request.

How do we ensure product quality and compliance?

We enforce a 3-step protocol:

① Source only from ISO-certified suppliers;

② Provide batch-specific COA/COO;

③ Dedicated team monitors global regulations (e.g., China NECIC, EU SCIP).

Do we offer customized synthesis?

Yes!

We provide end-to-end solutions from R&D to scale-up production.

Technical specs (e.g., purity, CAS#) and intended use documentation are required.

How do we handle logistics and customs?

We support CIF/FOB/DDP/DAP terms, partner with global logistics providers,

and have in-house experts for HS code classification, hazardous material documentation, etc.

How do we manage raw material price fluctuations?

We mitigate risks via long-term contracts, multi-region sourcing,

and futures hedging, supplemented with quarterly market analysis reports.