Sodium Metabisulfite HP

Sodium Metabisulfite HP – High-Purity Grade for Industrial Applications

Sodium Metabisulfite HP—a name you probably wouldn’t drop into casual conversation, but it holds a quiet power in many Australian industries. It’s a high-purity, white crystalline powder, the kind that looks deceptively simple. Yet, beneath that bland exterior lies a versatile compound trusted for its potent reducing and preservative properties. It’s the cleaner, more refined sibling in the sodium metabisulfite family—tailored for situations where low impurity levels aren’t just preferred, but necessary.

You’ll see it in action in food processing, water treatment, pharmaceuticals—even in some rather specialised industrial systems. It doesn’t make headlines, but it quietly does its job. Whether you’re trying to dechlorinate a high-pressure water system or extend the shelf life of dried fruits, this compound pulls its weight—consistently and reliably.

What Is Sodium Metabisulfite HP?

Let’s break it down. Sodium Metabisulfite HP is a high-purity form of Na₂S₂O₅—a common, inorganic salt. It usually shows up as a white, odourless crystalline powder, though depending on who’s sniffing, there’s a faint whisper of sulphur. The “HP” part? That stands for “High Purity,” which might sound a bit sterile, but it’s critical when you need the cleanest possible material. Some might even call it food-grade or pharmaceutical-grade quality. (In the U.S., by the way, you’ll often see it listed with slightly different spelling—sodium metabisulfite.)

It dissolves readily in water, forming a mildly acidic solution. And when it comes into contact with acid? It releases sulphur dioxide gas, which is precisely what gives it those antimicrobial and antioxidant properties it’s known for.

Key Industrial Applications

This is where things get interesting. Sodium Metabisulfite HP plays a critical role as an oxygen scavenger in boiler systems and water treatment facilities. Removing residual oxygen may sound minor, but it’s essential for preventing corrosion and buildup—especially in metal pipelines and storage tanks. Basically, it’s like sending in a cleaning crew before rust and scale get a chance to move in.

Then there’s its role in the food and beverage industry. You’ll find it behind the scenes in winemaking, juice production, even in preserving dried fruits. Here, it acts as an antioxidant and preservative, helping products stay fresh longer—something that might seem small until you’ve opened a packet of dried apricots that haven’t gone grey. In pharmaceuticals, it can be used to stabilise formulations. And back in boiler rooms, it handles dechlorination and oxygen removal like a pro, ensuring systems don’t deteriorate under pressure.

Why Choose Our Sodium Metabisulfite HP?

We’re not just throwing buzzwords around when we say “high-purity.” As a trusted sodium metabisulfite supplier in Australia, we take quality seriously. Every batch meets strict national standards and undergoes thorough testing for consistency and safety. You can get it in standard 25 kg bags, or opt for customised bulk options depending on your needs. Delivery? Quick. Pickup? Available. Support? Absolutely.

And if you’re unsure what size or grade suits your setup, we’re here to help—not just with answers, but actual advice you can use.

➡️ Request a Quote for tailored supply options or to ask about availability.

Safe Handling & Storage

Even though it’s not explosive or exotic, Sodium Metabisulfite HP does require some respect. Gloves, dust masks, goggles—you know the drill. When dealing with any chemical powders, proper PPE is non-negotiable. It should be stored in a cool, dry space with plenty of ventilation. And whatever you do, keep it away from strong acids and moisture.

Want the full safety breakdown? Request the Safety Data Sheet (SDS). It’s free, and honestly, it’s smart to have it on hand even if you think you know the material inside and out.

Buy Sodium Metabisulfite HP in Australia

If your process demands high-purity performance, don’t settle. Our Sodium Metabisulfite HP is trusted across Australia for a reason—it works. And it works the same, time after time. We serve both large industries and smaller operations, offering dependable supply with a human touch.

• ✅ CAS Number: 7681-57-4
• ✅ Appearance: White crystalline powder
• ✅ Odour: Slight sulphur odour
• ✅ Solubility: Highly soluble in water
• ✅ pH (1% solution): Slightly acidic (pH 4.0–5.5)

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