Natural Umber France Pigment

Natural Umber – Iron Oxide Earth Pigment

Mineral pigment blend | Dark khaki earth tone | Construction and decorative applications

TerraChrom Natural Umber is an earthy mineral pigment blend composed of iron oxide and calcium carbonate. Supplied as a fine, odourless powder with a dark khaki colour, it is intended for colouring compatible building materials, decorative finishes, and creative projects.

Its muted, natural-looking colour makes it suitable for developing earthy tones in compatible formulations. Final colour and performance depend on the binder, pigment concentration, substrate, and application method.

Key Features

• Mineral pigment blend – Composed of iron oxide and calcium carbonate.

• Dark khaki earth tone – A muted, earthy colour for decorative finishes.

• Fine powder – Suitable for incorporation into compatible formulations.

• Odourless – No characteristic odour.

• Non-flammable – Stable under normal storage and use conditions.

• Versatile applications – Intended for construction materials and creative projects.

Recommended Uses

• Decorative plasters, renders, and mortars

• Cement-based colouring formulations

• Lime-based finishes, subject to compatibility testing

• Compatible paints and coatings

• Decorative and creative projects

• Custom earth-tone pigment blends

Compatibility with individual binders and application systems should be confirmed through small-scale testing before full use.

Technical Information

Product name: Natural Umber (Ombre naturelle)

Colour Index: C.I. R102–Bk11

Pigment type: Iron oxide and calcium carbonate mixture

Composition: Iron oxide and calcium carbonate

CAS number: 1317-61-9 (one component; not the complete mixture)

Colour: Dark khaki

Physical form: Dry powder

Odour: Odourless

pH: 7

Apparent bulk density: 900 g/L (0.900 g/cm³)

Solubility: Insoluble (solvent not specified)

Flammability: Non-flammable

UV resistance: Not specified

Tinting strength: Not specified

Mixing & Application

Incorporate Natural Umber gradually into the selected binder, mixing thoroughly to achieve an even colour distribution.

For dry construction-material mixes, distribute the pigment evenly throughout the dry ingredients before adding liquids, where appropriate for the formulation. For liquid binders, verify compatibility and use a suitable dispersion method.

Recommended dosage: No universal dosage is specified. Determine the appropriate concentration through trial batches based on the desired colour and performance.

For exterior applications, test the complete finished system for weathering, colour stability, and durability.

Handling & Storage

Store in a closed container in a dry location. Avoid generating airborne dust during handling and mixing.

Use appropriate eye protection and particulate respiratory protection where needed. Wash hands after handling and avoid uncontrolled releases into drains and waterways.

Natural Umber is not classified as hazardous under the Canadian Hazardous Products Regulations (HPR). Refer to the TerraChrom Safety Data Sheet for complete handling and safety information.

Technical Documents

Safety Data Sheet: English | Français

Tech Sheet: English | Français