Understanding Sodium Metabisulfite Food Grade Specifications, Grades and Supplier Selection

Choosing the right Sodium Metabisulfite Food Grade (焦亚硫酸钠食品级) comes down to reading the specification sheet correctly. This guide explains the numbers that matter and how to select a supplier you can trust.

Key Specifications of Sodium Metabisulfite Food Grade

As an SMBS preservative, the product is defined by a small set of parameters:

• Molecular formula: Na2S2O5
• CAS No.: 7681-57-4
• Appearance: White or yellowish crystal powder
• Packaging: 25/50kg bag or drum, customized woven/kraft bag
• Standard: GB1886.7-2015

Grade and Quality Considerations

Not all disinfection, sterilization & bleaching are equal. For Sodium Metabisulfite Food Grade, confirm active content, moisture and impurity limits against the cited standard. A reputable SMBS preservative supplier provides a Certificate of Analysis (COA) per batch and supports third-party testing.

Selection Checklist

1. Match the application: Used in printing, organic synthesis, leather making; preservative, bleaching agent, loosening agent.
2. Confirm packaging matches your handling (drum vs. bag, 25/50kg bag or drum, customized woven/kraft bag).
3. Verify the standard (GB1886.7-2015) and request documentation.
4. Check lead time and container-load options for export.

Storage and Handling

Store Sodium Metabisulfite Food Grade in a dry, ventilated area away from incompatible substances. Follow the MSDS for PPE and spill response. Many buyers combine this product with Calcium Hydroxide Food Grade in a single sourcing plan to reduce freight and admin cost.

For the full data sheet and current pricing, open the Sodium Metabisulfite Food Grade product page.