Vitamin C Ascorbic Acid Powder Manufacturer and Supplier

Doris Trading Co., Ltd. was established in 2017 in Changchun, Jilin Province. Its main business is selling high-quality vitamin C ascorbic acid powder to cosmetics, medicinal, and food companies around the world. With a test purity of 99.0–100.5%, our product meets strict international standards, so you can be sure of steady quality for your business needs. Our product has a freezing point between 191 and 192°C and dissolves easily in water. It is used in many businesses as an important source of nutrients and a powerful antioxidant.

Since we started, we've added 208 new items to our line and worked with 97 satisfied buyers around the world. Our certificates, which include FDA, ISO, HALAL, KOSHER, and BRC, mean that we meet all world standards for food safety. We will give you excellent expert support and a steady supply for your production activities.

Why Choose Us?

Certified Quality Standards

Our building has seven certificates that are known around the world. With these certificates, you can be sure that every batch follows strict safety rules. You always get goods that pass strict checks by a third party.

Fast Customization Service

We know that your work schedule is important. Within 7 days, our team comes up with unique formulas. It takes about 15 days to finish production, which helps you meet market needs fast.

Comprehensive Technical Support

Our experienced engineers give you application advice that is made to fit your wants. We help you get the most out of your products, whether you're making drinks, makeup, or vitamins. You get a partner who cares about the growth of your production business.

Flexible Supply Solutions

We keep some goods in stock so that we can fill immediate orders. Our system can handle different order sizes without slowing down delivery times. You gain from accurate wait times and well-planned production schedules.

Global Logistics Network

When it comes to operations, we can handle freight by sea, air, and land. We can load a variety of containers with normal food items. You have an easy time clearing customs, and the shipping rates to any location are cheap.

One-Stop Procurement

Getting 208 different kinds of ingredients from a single source makes things easier for you. You keep quality high while reducing the job of supply managers. This method cuts down on the cost of purchases and makes your supply chain much more efficient.

Vitamin C Ascorbic Acid Powder Advantages

Our vitamin c ascorbic acid powder offers exceptional versatility across multiple sectors. In the food industry, it functions as both a nutritional supplement and a powerful antioxidant preservative.

Food & Beverage Applications

Fruits and veggies don't turn brown during processing because of the powder. It naturally keeps the color of processed foods stable and makes them last longer. You can easily improve the quality of drinks, canned items, and cured flour products.

Pharmaceutical Production

As a main active pharmaceutical ingredient, it makes immune-support vitamins always work well. High bioavailability makes sure that pills with bubbles and drink mixes with added vitamins are absorbed properly. Your formulations reliably help people with their health problems.

Cosmetic Formulations

In skin care items, the powder increases collagen production and decreases melanin production. Because it absorbs quickly into the skin, it's great for anti-aging and whitening serums. You make high-performance products that have been shown to work by science.

Industrial Stability

With excellent oxidative stability in solid form, the product maintains potency during storage. It acts as a reducing agent that neutralizes free radicals in complex formulations. You solve oxidative degradation challenges in multi-ingredient systems confidently.

Specifications

Item	Standard
Appearance	White or almost white crystal or crystalline powder
Identification	Positive
Melting point	191°C ~ 192°C
pH (5%, w/v)	2.2 ~ 2.5
pH (2%, w/v)	2.4 ~ 2.8
Specific optical rotation	+20.5° ~ +21.5°
Clarity of solution	Clear
Assay (as C₆H₈O₆, %)	99.0 ~ 100.5
Heavy metals	≤0.0003%
Copper	≤3 mg/kg
Iron	≤2 mg/kg
Mercury	≤1 mg/kg
Arsenic	≤2 mg/kg
Lead	≤2 mg/kg
Oxalic acid	≤0.2%
Loss on drying	≤0.1%
Sulphated ash	≤0.1%
Residual solvents (as methanol)	≤500 mg/kg
Total plate count (cfu/g)	≤100
Yeasts & molds (cfu/g)	≤100
Escherichia coli/g	Absence
Salmonella/25g	Absence
Staphylococcus aureus/25g	Absence

FAQ

Q:Why is the color of my powder changing?

A:Yellowing indicates oxidation from moisture, light, or air exposure. Pure product remains white. Store in airtight, light-protected containers below 25°C.

Q:What mesh size should I choose?

A:Coarser mesh (40-80) works best for tablet compression. Finer mesh (200+) suits topical serums and instant beverages requiring rapid dissolution.

Q:Is the product synthetic or natural?

A:Most commercial high-purity powder derives from the Reichstein process or glucose fermentation. It's chemically identical to natural forms with superior purity.

Q:Can I use it in water-free formulas?

A:Yes. The powder suspends effectively in oils or silicones for skincare applications. This prevents premature oxidation before skin application.

Q:How do you ensure quality control?

A:We conduct iodometric titration for 99%+ purity verification. ICP-MS testing confirms heavy metals stay under 3-10 PPM. Specific optical rotation measured between +20.5° and +21.5° verifies the L-isomer presence.

Q:What industries benefit most?

A:Food manufacturers use it for preservation and fortification. Pharmaceutical companies rely on it for supplement production. Cosmetic brands incorporate it in anti-aging and brightening products.