Import Ammonium Sulfite — Buy in Bulk from Supplier in Canada

Ammonium sulfite, (NH4)2SO3, is a reducing agent supplied by M Trading from Canada as a white crystalline powder. The compound finds primary use in textile dyeing, paper de-inking, and certain wastewater treatment protocols where sulfite chemistry controls oxidation states. M Trading lists this material at harbor-tier verification with no response data on record, so buyers should treat initial contact as unproven and request current certificates of analysis.

The product typically appears in industrial-grade form with purity levels suited to bulk chemical processing rather than food or pharmaceutical applications. Standard commercial grades range from 90% to 93% ammonium sulfite by weight, with the balance comprising moisture and trace sulfates. Packaging for cross-border chemical trade normally involves 25 kg multi-ply paper bags or bulk flexible intermediate bulk containers, though M Trading does not specify configurations in its listing. Stability considerations matter: ammonium sulfite oxidises in air to ammonium sulfate, so storage under inert atmosphere or sealed conditions extends shelf life significantly.

Textile mills employ this compound as a reducing agent in vat dyeing and discharge printing, while paper recyclers add it during pulping to solubilise ink resins. Wastewater operators use controlled sulfite doses for dechlorination or chromium reduction. Buyers should confirm with M Trading whether the material ships as anhydrous or hydrated salt, as this affects effective dosing calculations. The listing refers to ISO and SGS compliance, but no certificate numbers or scopes are provided, so verification of current validity is essential before contract.

M Trading operates as an imported-tier supplier within Canadian chemical distribution channels, holding harbor-tier trust status on its marketplace profile. The company shows a 0.00 percent response rate with zero recorded response hours, indicating no historical buyer engagement through the platform's messaging system. This absence of interaction data means prospective buyers must conduct independent due diligence, requesting direct contact details, trade references, and proof of active operations before advancing to sample or contract stages.

The supplier profile contains no stated year of establishment, employee count, revenue figures, or named client base. M Trading does not list specific facility locations, warehouse capacities, or regulatory licence numbers in its visible data. Buyers should verify whether M Trading holds current Canadian Chemical Producers' Association membership, Transport Canada dangerous goods handling certification, or provincial environmental compliance permits relevant to ammonium sulfite storage and shipment. The listing mentions ISO and SGS certification in its source description, but no scope, standard, or expiry date is provided, so direct verification of certificate authenticity is necessary.