Green or white processed salt: Which is the best de-icing salt?

Navigating the complexities of de-icing roads, sidewalks, driveways and parking lots requires a good understanding of green processed salt and white de-icing salt. In this comprehensive guide, we delve into the subtleties of these de-icing salts, to help Quebec municipalities, cities and snow removal companies make an informed decision for optimal road safety.

White de-icing salt

White de-icing salt, often called sodium chloride, is one of the de-icing agents most commonly used to treat roads and snow-covered surfaces. It is effective down to around -8°C.

Composition

White de-icing salt is composed mainly of sodium chloride, the same compound as table salt! It may also contain additives to improve its de-icing properties.

Shape

It is generally available as white crystals or granules.

Chemical reaction

When applied to ice or snow, white de-icing salt works by lowering the freezing point of water, melting the ice.

Efficiency

It is effective at temperatures above about -8°C. Below this temperature, other de-icing agents or abrasives may be more appropriate.

Advantages of white de-icing salt

Economic efficiency

White de-icing salt is generally more affordable than other de-icing solutions, making it an economical choice for municipalities and snow removal companies.

Availability

It is widely available, making it easy to supply in large quantities.

Easy to apply

White de-icing salt is easy to apply. It can be spread mechanically on snow-covered surfaces, facilitating snow-clearing operations.

Green de-icing salt

Green treated de-icing salt is a variant of conventional de-icing salt (sodium chloride) which has been treated with magnesium chloride and calcium chloride, colorants and corrosion prevention agents. The aim of this treatment is to improve certain properties of the salt, notably with its effectiveness up to -25°C, The distinctive green color makes it easily identifiable.

Composition

Green de-icing salt is usually made from sodium chloride, but may also contain additives such as green colorants and corrosion inhibitors, in addition to magnesium and calcium chloride.

Visual appearance

Its green color makes it easier to see when spreading on snow-covered surfaces, making it easier to control the amount applied.

Anti-corrosion properties

Some green-treated salts contain anti-corrosion agents to reduce potential damage to vehicles and road infrastructure.

Reducing quantities used

The green coloring can make it easier for operators to see where salt has been applied, reducing the risk of over-application.

Advantages of processed de-icing salt

Increased visibility

The green color of treated de-icing salt makes it easy to identify on snow-covered roads, allowing drivers and pedestrians to see where the product has been applied.

Application control

The green coloring can help operators control the amount of salt applied, which can contribute to more efficient use and a reduction in the quantities required.

Corrosion reduction

Green salt incorporates corrosion inhibitors, which can help reduce potential damage to vehicles and road infrastructure.

Reduced environmental impact

By reducing over-application through improved visibility, green processed de-icing salt can help minimize the environmental impact associated with excessive salt use.

Frequently asked questions - De-icing salt

How to choose between green and white processed salt for road de-icing?

Consider your specific road maintenance needs. White salt is the economical solution, while treated salt is more effective and less damaging to concrete and unistone.

Does green salt protect equipment and machinery from corrosion?

Yes, green-treated salt, with the addition of approved corrosion inhibitor PNS, helps protect spreading equipment from rust and corrosion, ensuring a longer life for your road assets.

Can de-icing salt be used in all weather conditions?

De-icing salt is generally effective in melting ice on roads and sidewalks, but its effectiveness can vary according to weather conditions:

  • Temperature: White de-icing salt is most effective at temperatures above -8°C. At lower temperatures, its effectiveness diminishes. Green de-icing salt is more effective, melting ice and snow at temperatures as low as -25°C.
  • Humidity: Salt needs humidity to be activated. Consequently, it may be less effective in very dry conditions.
  • Snow type: Salt is generally more effective at melting wet snow than dry snow. Wet snow has a greater capacity to absorb salt.
  • Exposure to the sun: Exposure to the sun can accelerate the melting process with salt, as heat helps to activate the salt.

What is the price of bulk road salt?

White or green de-icing salt in bulk can be ordered by the ton or in Big Bag format. For market prices in Laval, Saint-Eustache and surrounding areas, visit our our online store.

What are the alternatives to traditional de-icing salts?

It's possible to use specialized abrasives like AB10 sand, ⅛ or ¼ winter abrasive or also a 50/50 mix between abrasive and salt to get the best of both worlds. Find out more about abrasives, visit our related page. Abrasives increase grip, especially when salt is less effective.

How often should roads and parking lots be de-iced?

Frequency depends on weather conditions. Regular monitoring and optimal de-icing ensure continued road safety in winter. It is also important to note that excessive use of salt can have an impact on the environment and on infrastructure corrosion. It is therefore essential to use salt responsibly.

In conclusion - What's the best de-icing salt for winter?

Choosing between green and white processed salt is crucial to effective road de-icing. By understanding their properties, benefits and environmental impact, you can make an informed decision that prioritizes both safety and sustainability. White salt will be a more economical choice and will be used down to around -8°C, while treated de-icing salt will be more effective, de-icing roadways down to temperatures of -25°C. Feel free to visit our online store or Contact us to find out more about our bulk products.

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