Hengyuan Fine Chemical is a leading supplier of reference materials and standards, specializing in providing high-precision and highly reliable solutions for industries such as environmental testing, food safety, and pharmaceutical research and development. We offer nearly 50,000 ready-to-ship products, including pharmaceutical impurity reference standards, chemical analysis reference standards, pharmacopoeial titrants, biopeptide reference standards, and more, meeting the testing needs of various industries.

With a craftsmanship spirit at our core, we are committed to refining every product to ensure its quality and accuracy. At the same time, we understand customer needs through in-depth communication, providing customized solutions and fast delivery services to support the efficient progress of your projects.

Hengyuan Fine Chemical—where precision becomes a habit and trust becomes a bond.

Product Number	Image	Product Name	CAS No.	Molecular Formula
Product Number:PCL-2024ZSY017-100ml		Product Name:Chrome Black T Indicator Fluid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY089-100mL		Product Name:Ferrocyanate Indicator	CAS No.:5144-89-8	Molecular Formula:
Product Number:PCL-2024ZSY009-250ml		Product Name:Acid mixed indicator solution stock solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY022-100ml		Product Name:Eosin sodium salt indicator	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY057-100ml		Product Name:Bromophenol blue indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY006-100ml		Product Name:Xylenol orange indicator	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY005-50ml		Product Name:Phenolphthalein-thymol blue indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY004-100ml		Product Name:Toluidine blue indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY002-100ml		Product Name:Sulfonazo III indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY001-100ml		Product Name:Quinaldine red indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY071-100ml		Product Name:Tetramethylbenzidine indicator solution for residual chlorine in tap water	CAS No.:N/A	Molecular Formula:
Product Number:test-test		Product Name:Special test 23	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY069-100ml		Product Name:1,10-Phenanthroline-ferrous acid indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY070-500ml		Product Name:PAN indicator fluid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2023ZSY001-100ml		Product Name:Diphenylazocarbohydrazide indicator	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY009-100ml		Product Name:Diphenylhydrazine indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY014-100ml		Product Name:Malachite green indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY015-500ml		Product Name:Litmus indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY559-100ml		Product Name:Thymol blue indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY017-100ml		Product Name:Cresol red-thymol blue mixed indicator solution	CAS No.:N/A	Molecular Formula:

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