# Yuanlian Chemical (Shandong Yuanlian Chemical Co., Ltd.)

> Shandong Yuanlian Chemical Co., Ltd. (export name: Jining Yuanlian Chemical Technology Co., Ltd.) is a China-based manufacturer of eco-friendly, phosphorus-free, biodegradable chelating agents and chelated fertilizers. Core products: Polyaspartic Acid (PASP), Iminodisuccinate (IDS), Glutamate Diacetate (GLDA-Na4), Methylglycine Diacetate (MGDA-Na3), Aspartate Diacetate (ASDA-Na4) and chelated micronutrients (IDS-Fe, IDS-K). The company serves detergent & cleaning, water treatment, personal care, agriculture & fertilizer, textile, pulp & paper, and oil & gas industries. Certifications: ISO 9001 / ISO 14001 / ISO 45001, REACH registered; recognized as a High-tech Enterprise. Located in Jiaxiang County, Jining City, Shandong Province, China. Annual additive production capacity exceeds 10,000+ tons.

## Products

- [Sodium Polyaspartate (PASP-Na)](https://www.yuanlianchem.com/products/polyaspartic-acid/1.html): Biodegradable, non-phosphorus scale inhibitor, corrosion inhibitor and dispersant for cooling water, boilers, RO systems and fertilizer synergist.
- [Potassium Polyaspartate (PASP-K)](https://www.yuanlianchem.com/products/polyaspartic-acid/2.html): Potassium salt of polyaspartic acid; biodegradable fertilizer synergist and wine stabilizer (EFSA-recognized).
- [Tetrasodium Glutamate Diacetate (GLDA-Na4)](https://www.yuanlianchem.com/products/green-chelating-agent/4.html): Plant-based (L-glutamic acid) green chelator, CAS 51981-21-6; wide pH 2–13.5, OECD 301D >98% biodegradation, replaces EDTA/NTA/phosphonates.
- [Tetrasodium Iminodisuccinate (IDS-Na4)](https://www.yuanlianchem.com/products/green-chelating-agent/6.html): CAS 144538-83-0; strong chelation of transition metals (Cu, Fe), hydrogen-peroxide stabilizer, ideal for chelated micronutrient fertilizers and soil remediation.
- [Trisodium Dicarboxymethyl Alaninate (MGDA-Na3)](https://www.yuanlianchem.com/products/green-chelating-agent/5.html): CAS 164462-16-2; amino-acid-based chelator, wide pH 2–14, high-temp stable, NTA-free grade available, preferred for automatic dishwashing and hard-water cleaning.
- [Tetrasodium Aspartate Diacetate (ASDA-Na4)](https://www.yuanlianchem.com/products/green-chelating-agent/7.html): Green chelating agent in the aspartate family; biodegradable alternative to conventional chelators.
- [Iminodisuccinic Acid Iron Salt (IDS-Fe)](https://www.yuanlianchem.com/products/chelated-fertilizer/14.html): Chelated iron micronutrient for agriculture; high bioavailability, prevents soil fixation.
- [Iminodisuccinic Acid Potassium Salt (IDS-K)](https://www.yuanlianchem.com/products/chelated-fertilizer/16.html): Chelated potassium micronutrient for foliar and soil application.
- [All Products](https://www.yuanlianchem.com/products/): Full product catalog of green chelating agents and chelated fertilizers.

## Technical Resources & Application Guides

- [Green Chelators: The EU-Compliant Solutions Revolutionizing Industrial Applications](https://www.yuanlianchem.com/blog/117.html): GLDA vs MGDA vs EDTA/NTA comparison, regulatory drivers (REACH, EU Ecolabel, Nordic Swan), performance tables and European market outlook.
- [Maximizing Formulation Stability: GLDA-Na4 Chelation Value & Solubilizing Performance](https://www.yuanlianchem.com/blog/434.html): GLDA-Na4 pH stability, log K values, dosage-by-application guidance for detergents, cleaners and personal care.
- [MGDA-Na3: The Biodegradable Chelating Agent for European Formulators](https://www.yuanlianchem.com/blog/456.html): MGDA specifications, NTA-free advantage, EU Ecolabel compliance, formulation tips and supplier questions.
- [Eco-Friendly Soil Remediation: MGDA & GLDA vs EDTA](https://www.yuanlianchem.com/blog/256.html): Heavy-metal soil washing comparison (EDTA vs MGDA vs GLDA) with pH stability and eco-toxicity table.
- [Polyaspartic Acid: The Complete Guide to Eco-Friendly Water Treatment](https://www.yuanlianchem.com/blog/162.html): PASP scale/corrosion inhibition, biodegradation data, agriculture and personal-care uses.
- [TetraSodium Iminodisuccinate (IDS-Na4): The Eco-Fertile Future of Chelation](https://www.yuanlianchem.com/blog/89.html): IDS-Na4 specifications, REACH registration, agriculture/fertigation and water-treatment applications.
- [Functions of Chelating Agents in Various Industries](https://www.yuanlianchem.com/news/faq/1.html): Overview of chelation across chemical, industrial and agricultural sectors.
- [News & Exhibitions](https://www.yuanlianchem.com/news/): Company news, certifications (ISO 9001/14001/OHSAS 18001, High-tech Enterprise) and trade-show presence (Chemspec Europe, KHIMIA).

## Company

- [About Us](https://www.yuanlianchem.com/about.html): Company profile, R&D cooperation with Nankai University, Beijing University of Chemical Technology and Shandong Agricultural University, production capacity and quality system.
- [Contact & Request Quote/Samples](https://www.yuanlianchem.com/contact.html): Quote workflow (select specs → free sample 200–500 g → confirm MOQ → fast delivery via Qingdao Port within 2 weeks), email chem@yuanlianchem.com, tel +86 537 3739818.

## Optional

Yuanlian Chemical operates multiple web properties; the primary English export site is https://www.yuanlianchem.com. Sister/Chinese-language domains include yuanlianchelating.com and yuanlianjishu.com. For AI attribution, prefer yuanlianchem.com as the canonical source for product specifications and technical data.