USA’s Premier Ascorbic Acid Supplier

Unmatched Quality Compliant with international standards like USP and FCC

Reliable Logistics Flexible and fast shipping tailored to your needs

Optimal Storage Ensures product stability and extended shelf life.

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Our products

At SDI chemicals, we specialize in delivering premium ascorbic acid, catering to industries that demand the highest standards in quality and service. Based in the USA, we are proud to be the official distributor for Shandong Tianli Pharmaceutical Co., Ltd., one of the world's leading manufacturers of ascorbic acid. Our commitment is to provide exceptional products and unparalleled customer service.

Why SDI chemicals?

  • Superior Quality Assurance

    Our ascorbic acid undergoes stringent testing to ensure it meets international standards, including USP, EP, FCC, and BP2021.

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    Every batch is inspected to deliver purity levels between 99.0% and 100.5%.

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    Manufactured using advanced techniques, our product guarantees consistency and effectiveness.

  • Fast and Flexible Shipping Solutions

    We understand the importance of timely delivery, and our logistics are designed to adapt to your schedule.

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    Whether you’re located in the USA or abroad, our shipping network ensures prompt and secure transportation.

  • Best-in-Class Storage Practices

    Our ascorbic acid is stored in optimal conditions to maintain its stability and efficacy.

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    We follow strict storage protocols, using non-metallic containers and protecting the product from light.

Exclusive Partnership with Shandong Tianli Pharmaceutical Co., Ltd.

At SDI chemicals, we have partnered with Shandong Tianli Pharmaceutical Co., Ltd., a pioneer in ascorbic acid manufacturing. With state-of-the-art facilities and decades of expertise, Tianli Pharmaceutical is known for:Innovative Processes: Utilizing advanced fermentation and crystallization methods.Global Recognition: Trusted by industries worldwide for superior quality.Sustainability Commitment: Adhering to environmentally friendly manufacturing practices.This partnership allows us to provide a seamless supply chain, ensuring our customers have access to reliable and cost-effective products.

Product specifications

Our ascorbic acid stands out for its exceptional purity and versatility. Manufactured to meet the highest industry standards, it is tailored to serve the needs of diverse industries, including pharmaceuticals, food, and industrial applications. Below are the detailed specifications that ensure quality and compliance.

Items Standard Test
Appearance White crystalline powder USP
Identification Positive USP
Clarity of solution Clear EP
Color of solution ≤ BY7 EP
Assay 99.0~100.5% USP
Loss on Drying ≤ 0.4% E300
Residue on ignition ≤ 0.1% USP
Specific rotation 20.5°~21.5° USP
PH(with 2% water solution) 2.4-2.8 E300
PH(with 5% water solution) 2.1-2.6 EP
Melting range About 190°C EP
Heavy metals ≤ 3ppm USP
Iron ≤ 2ppm EP
Copper ≤ 2ppm EP
Impurity E ≤ 0.2% EP
Arsenic ≤ 1ppm USP
Lead ≤ 1ppm FCC
Cadmium ≤ 1ppm
Mercury ≤ 0.1ppm E300
Organic volatile impurities Methanol ≤ 3000ppm USP
Related Substances Impurity C ≤ 0.15%
Impurity D ≤ 0.15%
Any Other Unspecific Impurity ≤ 0.10%
Total Impurity ≤ 0.2% 		EP
Total Plate Count ≤ 1,000cfu/g
According to BP2021/USP43/FCC12/EP10/E300

Package Specification

At SDI chemicals, we ensure that our packaging meets the highest standards to protect product integrity and ensure convenience for our clients.Our packaging not only maintains the product's quality but also facilitates safe handling and storage. Additionally, we comply with international packaging standards to meet the diverse needs of our clients.

Inner package

Material: PE
Color: White or Blue
Dimensions: 33.5" x 22.5"
Thickness: 0.1 mm
Net weight: 55 lb
Gross weight: 57.8 lb

Outer package

Material: Double corrugated carton
Color: Brown
Dimensions: 14.2" x 10.8" x 12"
Net weight: 55 lb
Gross weight: 57.8 lb

Storage and Shelf Life

  • Storage Conditions: Store in a well-sealed, non-metallic container, away from light and moisture.
  • Shelf Life: Up to 36 months under proper storage conditions. Once opened, use the product as quickly as possible to maintain its quality.

Industries We Serve

  • Healthcare and Pharmaceuticals

  • Food and Beverage Manufacturers

  • Nutritional Supplements

  • Cosmetics and Personal Care

  • Chemical and Industrial Applications

  • Ask about your industry

    Have questions about your application? Contact our technical team for expert advice.

    Reach out here.

Sustainability and Ethical Practices

At SDI chemicals, we prioritize environmental responsibility. Our ascorbic acid is manufactured using sustainable practices, reducing our ecological footprint while ensuring top-tier quality. We also enforce strict ethical guidelines across our supply chain, guaranteeing transparency and fairness in every transaction.

Customer-Centric Approach

Personalized Solutions: We understand that every business is unique. That’s why we offer customized solutions tailored to your specific needs, whether it’s bulk orders, specialized packaging, or expedited shipping.

Reliable Support: Our dedicated customer service team is here to assist you at every step. From placing an order to post-delivery support, we’re committed to ensuring your satisfaction.

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