Certificate of Analysis: Sodium Metabisulfite

Product Name: Sodium Metabisulfite (99-100% Food Grade)

Product Code: CAS 7681-57-4

Chemical Name: Sodium Metabisulfite (Na₂S₂O₅)

Grade: Food Grade, NSF/ANSI 60 Certified

Intended Use: Water treatment, food preservative, and industrial applications.

Supplier: Wilco Prime, United Arab Emirates, +971 50 899 0212, www.wilcoprime.com, ecom@majtrading.com

Manufacturer: Purechem

Report No.: 06/SMBS/FG/Na₂S₂O₅

Invoice No.:---

Container No.:---

Batch No.: ALR/032025A

Quantity:---

Date of MFG: March 2025

Date of Analysis:

Date of Expiry: March 2027

Packaging: 25 kg woven bags, Part No: SMB-25KG

Sr. No.	Parameters	Unit	Specifications	Observed Value
1.	Appearance	-	White Crystalline Powder	Passes
2.	Assay	%	Min. 99	99.89
3.	SO₂	%	Min. 66	66.64
4.	Solubility (10gms in 100gms water)	%	Clearly and free from insoluble	Passes
5.	Iron (as Fe)	ppm	10	Passes
6.	pH of 10% solution	-	4.2–4.8	4.35

Assay: Titration per USP-NF

SO₂: Iodometric titration

Iron (as Fe): ICP-MS per USP <231>

pH: pH meter, 10% aqueous solution

NSF Certification: Approved NSF

Additional Compliance: Complies with EU Regulation (EC) No 1333/2008 for food additives and Taiwan CNS 15030 for chemical safety.

Storage Conditions: Store in a cool, dry, well-ventilated area in tightly sealed containers. Keep away from strong oxidizing agents and acids. Recommended storage temperature: 15–25°C.

Handling Precautions: Use appropriate PPE (gloves, safety goggles, dust mask). Avoid inhalation of dust and contact with skin and eyes.

This is to certify that the above batch of Sodium Metabisulfite has been tested and meets the specified requirements. The product is suitable for its intended use as per NSF/ANSI 60 and other applicable standards.

Date of Analysis: