Black 330 Iron Oxide Pigment, Used as Dye or Colourant For Ceramic, Paint, Concrete

  • Iron Oxide Pigment (black)
  • For colouring concrete, ceramic, paint, coating, leather, plastic


Black oxide pigment is used as dye or colourant in various applications, including ceramic, paint, concrete, coating, ink, leather, plastic and rubber. This dry pigment powder with an iron oxide base can be mixed with a binder to tint glaze and varnish or make paint.

Iron oxide is used to coat the particles in cement and mortar/plaster. You can achieve a good colour using 4% by weight of oxide to the weight of cement. At 8-10% saturation occurs and no additional benefit is achieved.

Iron-oxide mixing ratio for concrete/plaster/mortar, follow these steps:

  1. Determain the weight of the cement and use the table below to calculate the amount of oxide to use (based on 4%).
  2. Mix thotoughly with aggregate/sand and 1/2 the water. Mix thoroughly prior to adding cement and remaining water. Adequate mixing must occur to ensure full dispersion of colour.
  3. To achieve consistant colour ensure all batches are identical. Ideally a sample should be approved before undertaking the job.
READY MIX 1cm3 250kg 10kg
SITE MIX 40kg 7kg 280g
BAG CONCRETE MIX 25kg 3kg 120g
PATCH KIT 1kg 300mg 12g
MORTAR 1kg 300mg 12g

The above ratio is an indicative guide. Therefore, you need to determine your own mixing ratio by doing a few tests before proceeding with your job.

Pastel shades can be obtained with the light brown, reds, green and yellow by using white cement instead of grey in the mix.

Tinting strength of pigments

One brand of pigment is not the same as another.  Two pigments identical in appearance may have a completely different yield.  The decisive property in the use of a pigment for colouring concrete is tinting strength, which determines the depth of colour for various brands of pigment.  A sample mix prepared under practical conditions can provide reliable information on this.

Natural colour of the cement and colour effect

In colouring concrete it is not the aggregate that is pigmented, rather the cement paste is coloured, which then forms a layer on the individual aggregate particles. Therefore the more the coloured cement paste is diluted with aggregate, the less intense will be the colour of the concrete.

Grey has a subduing effect on all colours, no matter where they are.  Therefore, it is not possible to colour concrete made with normal grey cement as brightly as concrete containing white cement.

The gain in colour purity obtained by using white cement depends, however, on which pigment is added. In the case of black there is virtually no difference between concrete made of white cement and one made of grey cement.  With dark brown, red and burnt umber the difference is small while it is considerable with yellow, marigold, green and blue.

Pigment loading and colour effect

With increasing pigment loading, the colour intensity moves towards saturation point.  Adding more pigment at this point does not significantly deepen the shade and may affect the structural strength of the concrete.

The saturation point lies between approximately 5% – 8% calculated on the weight of the cement in the mix.  However a good depth of colour can be achieved at 4% loading with our Oxides.

The normal ready mix concrete strength is 6 x 40kg bags of cement per cubic metre of concrete. 4% of this equates to approximately 9kg of oxide. Mortar on the other hand with its higher cement content requires more pigment.  It is important to remember that pigment addition relates to the amount of cement in the mix and nothing else. A rough guide is to use approximately 1.5kg of oxide per 40kg bag of cement.

Blending of Oxides for Different Colour Shades

Oxides, like paints, can be mixed to provide a variety of colours. When mixing coloured concrete onsite, ingredients must be placed into the mixer in sequence to ensure the pigments disperse fully. With powdered colours, put pigments into the mixer along with aggregates and approximately half the required water and mix well to ensure a uniform blend: follow this by adding cement and sufficient water to obtain the desired consistency.

Download Material Data Sheets: SDS Oxicolour Black 330

[contact-form-7 id=”8324″ title=”ask about this product”]

  • Do you deliver same day?
    Yes, Waikato & Auckland regions only, choose this at checkout.
  • Can I pick up my order from your store?
    No, we only sell online.
  • Are you GST registered?
    Yes, all prices are in NZ$ and inclusive of gst.
  • Can I get an invoice before I place my order?
    Our invoices are automatically generated in pdf and sent to your email as soon as you checkout. However, you can email or call us on 021 0505 449 to get the invoice beforehand.
  • What method of payment do you accept?
    Pay by credit/debit card via PayPal, Bank transfer, Afterpay, and Western Union.

Shipping within New Zealand:

Urban from $5.95  |  Rural from $9.99  |  Overnight from $11.95  | Saturday delivery from $14.95  | Freight $75  | Same day Auckland region $90

  • All orders are processed daily and shipped via Track and Trace.
  • Overnight delivery, usually 1-2 business days.
  • Urban and Rural deliveries about five business days.
  • All orders are packaged securely.
  • Special shipping requirement is acceptable by prior arraignment.
  • Freight shipping is a flat rate regardless of size and weight. Use this option if you see your shipping exceeded $75.

Worldwide Shipping

  • Add to Cart all the products you want to buy and then go to checkout. Enter your address, and choose shipping by weight.
  • All orders are packaged nicely and securely.


Wholesale prices, up to 70% off the RRP:

  • Save Money Every time you buy from us.
  • Get up to 70% discount every time.
  • Use your Gold Coupon every time you purchase on our website.
  • No minimum and no maximum spent.
  • Your Gold Coupon is always active, with no expiration. Simply enter your coupon at checkout to get the discount.
  • Valid on all products, storewide.
  • Your discount percentage will be based on your total spending on Gold Leaf NZ and not on one single order.
  • Coupons do not apply to on-sale products.
  • You will get your Gold Coupon on your first order.

High-Quality Customer Service:

  1. We guarantee the quality of every product you buy from us.
  2. We package all orders securely and nicely.
  3. We inspect every product before we ship it to you so that you do not get disappointed.
  4. All orders are processed daily and delivered to you within 20 days via NZ Post, UPS, FedEx or DHL.
  5. You can pay by direct credit, Visa/Paypal or Western Union.
  6. We have no objection to how you use our products, resell them, or use them for yourself or your customers.
  7. Superfast communication, email us, call us or text us at any time.
  8. We look forward to you joining us for a long and prosperous business relationship.

If you have any questions, then please email us.