CAS 50-81-7
Ascorbic Acid
CAS 50-81-7C6H8O6176.12 g/mol
Ascorbic Acid, commonly known as Vitamin C, is a crucial antioxidant used predominantly as a preservative in the food industry to prevent oxidation and discoloration. Its high-purity form plays a pivotal role in pharmaceuticals for tablet and injectable solution production, where its thermal stability and controlled pH are essential. Ascorbic Acid is classified under multiple HS codes in Kenya, catering to both medicinal and food applications. This crystalline powder meets BP/USP/EP/FCC/E300 standards, making it a versatile choice across various sectors.
Main applicationFood preservation — prevents oxidation and discoloration
Ascorbic Acid is significant because it serves dual roles in both food and pharmaceutical industries, acting as an essential antioxidant to prolong the shelf life of food products and as a stable compound in medicinal formulations. Its ability to meet stringent purity and compliance standards makes it a preferred choice for ensuring product quality and efficacy in a variety of applications.
Also known as
- Vitamin C
- E300
- INS 300

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Available in 25 kg net weight bags.
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 50-81-7
- Chemical formula
- C6H8O6
- Molecular weight
- 176.12 g/mol
- Grade
- Pharma grade
- Appearance
- White crystalline powder
- Concentration
- 2% solution pH 2.4-2.8
- Melting Point
- 190 °C
Ascorbic Acid (CAS 50-81-7) is available in a white to almost white crystalline powder form, with a molecular formula of C6H8O6 and a molecular weight of approximately 176.12 g/mol. It is typically supplied at a purity range of 99.0-100.5%, aligning with standards such as BP, USP, EP, and FCC. For specific industrial and pharmaceutical applications, Ascorbic Acid’s role as an antioxidant is magnified by its superior stability and controlled pH levels in solutions. The choice of grade often depends on the intended application, with particular attention to its impurity and heavy metal content, which are kept within pharmacopoeial limits. Purchasers must specify the desired compliance standard when ordering, leveraging its varied applications in both food preservation and pharmaceutical manufacturing.
Delivery
Ascorbic Acid is dispatched from our Nairobi warehouse across Kenya, and export delivery is arranged to the wider East African market. Lead time depends on quantity and grade and is confirmed with your quotation — see delivery and collection for the towns we reach and how dispatch works.
Applications & uses
- Food preservation — prevents oxidation and discoloration
- Pharmaceutical manufacturing — used in tablet production
- Injectable solutions — buffers and stabilizes pH
- Analytical reference standards — ensures accuracy in testing
Industries we supply this to
Why buy this from Sparks
- High purity — suitable for sensitive applications
- Versatile antioxidant — extends product shelf life
- pH stability — essential for pharmaceuticals
- Comprehensive compliance — meets international standards
- Facilitates accurate formulation — with minimal impurities
Quality assurance
- Batches are checked against the specification values listed above before dispatch.
State what your process, auditor or customs clearance requires when you request a quotation, and it is confirmed with the quote.
Safety, handling & storage
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Frequently asked questions
What is the CAS number of Ascorbic Acid?
The CAS registry number for Ascorbic Acid is 50-81-7. Its chemical formula is C6H8O6, with a molecular weight of 176.12 g/mol. Quote this number when requesting a quotation or checking documentation, as it identifies the substance unambiguously regardless of the trade name used.
What are the other names for Ascorbic Acid?
Ascorbic Acid is also referred to as Vitamin C, E300 and INS 300. These names describe the same substance, so a specification or enquiry written against any of them can be matched to this product.
What grade of Ascorbic Acid is supplied?
Ascorbic Acid is supplied as Pharma grade. State the grade your process requires when requesting a quotation — where an alternative grade can be sourced, it is confirmed at quotation stage rather than assumed.
What concentration is Ascorbic Acid supplied at?
Ascorbic Acid is supplied at a concentration of 2% solution pH 2.4-2.8. Concentration and assay are separate figures: the concentration describes the strength of the material as supplied, and the certificate of analysis issued for your consignment carries the measured values for that batch.
What does Ascorbic Acid look like?
Ascorbic Acid is described as white crystalline powder. Appearance is a useful first check on receipt of goods, though it does not replace the certificate of analysis for confirming that the material meets specification.
What is Ascorbic Acid used for?
Common applications include food preservation — prevents oxidation and discoloration, pharmaceutical manufacturing — used in tablet production, injectable solutions — buffers and stabilizes pH and analytical reference standards — ensures accuracy in testing. The suitability of the product for a particular process depends on the grade and specification required, which is worth confirming against your own process conditions.
Which industries use Ascorbic Acid?
Ascorbic Acid is supplied to the Water Treatment, Food Processing & Beverage, Agriculture & Agrochemicals, Mining & Minerals, Construction & Admixtures, Pharmaceuticals & Healthcare, Cosmetics & Personal Care, Cleaning & Detergents, Paints, Coatings & Inks, Textile & Leather Tanning, Oil, Gas & Energy and Laboratories & Research sectors. These are the industries this product is listed against in our catalogue; if your application falls outside them, we can advise on suitability before you order.
What packaging is Ascorbic Acid available in?
Available in 25 kg net weight bags. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
What is the HS code for Ascorbic Acid?
Ascorbic Acid is recorded against the EC number 200-066-2 and the HS customs code 30049000000. Quote this on customs and export paperwork; it is confirmed again on the commercial invoice for your specific consignment.
References
Technical information on this page was compiled from the following published sources. Safety and handling data always comes from the supplier’s own safety data sheet.
- 1.ThermoFisher Scientific — Product Specificationassets.thermofisher.com
- 2.Version 6.11sigmaaldrich.com
- 3.Ascorbic Acid HSN Code used in Kenya - Volzavolza.com
- 4.SHANDONG LUWEI PHARMACEUTICAL COss3-production-public.s3.amazonaws.com
- 5.Chemistry of ascorbic aciden.wikipedia.org
- 6.Ascorbic Acid Pharma Grade Supplier & Manufacturer in China | High Purity Vitamin C Powder for Pharmaceutical Useshandong-luwei.com
- 7.Does this juice look okay to turn into cider?reddit.com
- 8.Implementation of the 2022 Harmonized System & the 2022 East African Community Common External Tariff - KRAkra.go.ke
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