Gilsonite 4 oz vol
A transparent brown to black-brown mineral pigment used in tempera, oil and watercolor mediums, obtained from natural asphaltum deposits in Utah. Gilsonite, also known as uintahite or asphaltum, is a bitumen-impregnated rock (asphaltite) mainly found in the Uintah Basin of Utah and Colorado, United States. It is a naturally occurring solid hydrocarbon bitumen. Although it occurs also in other locations, its large-scale production occurs only in the Uintah Basin.
Our gilsonite, or North American Asphaltum is a natural, resinous hydrocarbon found in the Uintah Basin in northeastern Utah. This natural asphalt is similar to a hard petroleum asphalt and is often called a natural asphalt, asphaltite, uintaite, or asphaltum. Gilsonite in mass is a shiny, black substance similar in appearance to the mineral obsidian. It is brittle and can be easily crushed into a dark brown powder.
Pigment Names | |
Alternate Names: | English: asphalt, asphaltite, asphaltum, bitumen, Antwerp brown |
Origin and History
The mineral now know as Gilsonite or North American Asphaltum was discovered in the early 1860s, but it was not until the mid-1880s that Samuel H. Gilson began to promote it as a waterproof coating for various products and as a unique varnish. Gilson's promotion of the ore was so successful that, in 1888, he and a partner formed the first company to mine and market gilsonite on a commercial scale.
GIlsonite is a type of asphalt or asphaltum, also known as bitumen, which is a sticky, black and highly viscous liquid or semi-solid form of petroleum. The terms asphalt and bitumen are often used interchangeably to mean both natural and manufactured forms of the substance. In American English, asphalt is the refined residue from the distillation process of selected crude oils. Outside the United States, the product is often called bitumen. Geological terminology often prefers the term bitumen.
Source
Gilsonite is found below the earth's surface in vertical veins or seams that are generally between two and six feet in width, but can be as wide as 28 feet. The veins are nearly parallel to each other and are oriented in a northwest to southeast direction. They extend many miles in length and as deep as 1500 feet. The vein will show up on the surface as a thin outcropping and gradually widen as it goes deeper. Due to the narrow mining face, Gilsonite is mined today, much like it was 50 or 100 years ago. The primary difference is that modern miners use pneumatic chipping hammers and mechanical hoists.
Tinting Strength
Gilsonite is a transparent color; its transparency depending upon how it is made into paint. It is typically used in glazes and was prized by artists in past centuries for its ability to add warmth and depth in shadows.
Pigment Characteristics
Processing of Gilsonite now removes most of the inert contaminants and newer, more powerful, solvents make the higher softening point grades more interesting to the user. Today, Gilsonite is graded by softening point (a rough measure of solubility) and particle size. All grades carry a degree of quality far superior to those first small amounts of crude Gilsonite marketed in the 1880s. Our grade of Gilsonite is finely powdered and has a high softening point, 130–204 °C (265–400 °F).
Permanence and Compatibility
Gilsonite is compatible with vegetable oils (linseed, soya, etc.), microcrystalline and paraffin waxes, aromatic and aliphatic solvents and rosins.
Gilsonite is soluble in aliphatic, aromatic and chlorinated hydrocarbon solvents. It has limited solubility in most ketones, but is soluble in mixed aromatic solvents that contain a ketone component. Gilsonite is not soluble in water, alcohols, or acetone.
Toxicity
Gilsonite in its unaltered state is non-carcinogenic, non- mutagenic, and non-toxic by recognized test procedures, which include the modified Ames assay test, chronic feeding studies for the National Toxicology Program (NTP), and NIOSH protocols.
Pigment: Rublev Colours Gilsonite
Pigment Information | |
Color: | Brown Black |
Colour Index: | Natural Black 6 (NBk 6) |
Chemical Name: | Bitumen |
Chemical Formula: | C28H16Cl8O8 |
CAS Number: | 12002-43-6 |
ASTM Lightfastness Rating | |
Acrylic: | Not tested |
Oil: | Not tested |
Watercolor: | Not tested |
Properties | |
Specific Gravity (@25° C): | 1.03–1.10 |
Bulk Density: | 40 lbs./ft3 |
Hardness (Moh): | 2 |
Refractive Index: | 1.59–1.64 |
Fusing (Softening) Point (°C): | 161–230 |
Health and Safety
WARNING! Fire Hazard: Gilsonite is combustible.
A skin, eye, and mucous membrane irritant. An allergen. Has been known to cause photosensitization of skin. Flammable when exposed to heat or open flame. To fight fire, use water, foam, dry chemical, and CO2. When heated to decomposition it emits acrid smoke and irritating fumes.
SKU | 462-1010 |
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Brand | Rublev Colours |
Vendor | Rublev Colours |
Processing Time | Usually ships the next business day. |
Size | 4 oz vol jar |
Color | Black, Brown |
Order Processing
If the Processing Time for items in your order is "Usually ships within 24-48 hours", your order will usually be processed within 48 hours of receipt Monday through Friday. Orders received during weekends and holidays will be processed on the next business (working) day. Orders with longer processing times will be shipped when all items become available.
Shipping Rates
Please add your desired items and the delivery address to your basket to determine the exact shipping costs and options. The table below provides shipping rates for different weights to the countries we ship to.
Carriers
We use the following carriers to deliver orders:
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Below is an approximate guide to shipping costs for locations in Europe. Rates may change without notice.
COUNTRY | ALPHA-2 | RATES PER PARCELS | CARRIER | |
0–10 kg | >10 kg–30 kg | |||
Austria | AT | 11,50 € | 11,50 € | DPD |
Belgium | BE | 10,95 € | 10,95 € | DPD |
Bulgaria | BG | 20,25 € | 30,25 € | FedEx |
Bosnia and Herzegovina | BA | 49,25 € | 49,25 € | DPD |
Cyprus | CY | 21,80 € | 29,30 € | FedEx |
Switzerland | CH | 25,85 € | 42,98 € | FedEx |
Czech Republic | CZ | 12,00 € | 12,00 € | DPD |
Germany | DE | 5,50 € | 5,50 € | DPD |
Denmark | DK | 12,00 € | 12,00 € | DPD |
Spain | ES | 17,48 € | 28,50 € | FedEx |
Estonia | EE | 21,70 € | 21,70 € | DPD |
Finland | FI | 17,48 € | 28,50 € | FedEx |
France | FR | 14,60 € | 14,60 € | DPD |
United Kingdom | GB | – € | – € | – |
Greece | GR | 17,48 € | 28,50 € | FedEx |
Croatia | HR | 29,25 € | 29,25 € | DPD |
Hungary | HU | 15,90 € | 15,90 € | DPD |
Ireland | IE | 17,48 € | 28,50 € | FedEx |
Iceland | IS | 30,70 € | 62,40 € | DHL |
Italy | IT | 15,90 € | 15,90 € | DPD |
Liechtenstein | LI | 25,85 € | 43,00 € | FedEx |
Lithuania | LT | 21,70 € | 21,70 € | DPD |
Luxembourg | LU | 10,95 € | 10,95 € | DPD |
Latvia | LV | 21,70 € | 21,70 € | DPD |
Malta | MT | 21,80 € | 30,25 € | FedEx |
Monaco | MC | 15,95 € | 24,30 € | FedEx |
Netherlands | NL | 10,95 € | 10,95 € | DPD |
Norway | NO | 25,85 € | 43,00 € | FedEx |
Poland | PL | 14,90 € | 14,90 € | DPD |
Portugal | PT | 15,50 € | 15,50 € | DPD |
Romania | RO | 21,80 € | 30,25 € | FedEx |
Serbia | RS | 49,25 € | 49,25 € | DPD |
Slovakia | SK | 15,90 € | 15,90 € | DPD |
Slovenia | SI | 15,90 € | 15,90 € | DPD |
Sweden | SE | 15,90 € | 15,90 € | DPD |
Turkey | TR | 27,30 € | 46,20 € | FedEx |
Note: Countries in RED type are not members of the European Union.
Postal Service
Shipping (EU and non-EU countries):
Up to 500 grams Tracked: 6,85 €
Up to 1000 grams Tracked: 10,45 €
Up to 2000 grams Tracked: 20,50 €
Tracking
For tracking details, please log in to your Natural Pigments account.
We track all orders where a tracked delivery service has been selected.
We will update your order with the tracking information if the shipping carrier provides a tracking number. You can locate the tracking number for your order in the shipping confirmation email you receive when your order is shipped. (Look for the email with the subject line "Natural Pigments: Shipment # xxxxxxxxx for Order # xxxxxxxxx.") You can also find the tracking number by signing into your account and visiting My Account Dashboard under Recent Orders.
VAT for Orders within the European Union
VAT is not included in prices unless specified on the website as VAT INCLUSIVE. VAT is calculated for Germany at 19% on both order subtotal and shipping cost and is added to the order grand total.
VAT, Duties, and Tariffs for Orders Outside of the European Union
VAT is not included in prices and totals unless specified on the website as VAT INCLUSIVE. Duties, tariffs, and customs broker fees are not included in the prices and totals on the website. These charges are in addition to what you will pay when ordering. These charges originate in the delivery country, so please contact your local customs for more information.
Shipping Rates
The rate charged for the shipping of your order is based on the weight of your products and your location. Before the final checkout page, you will be shown what the shipping cost will be, and you will have a chance to abandon your order if you decide not to place it.
Shipping Damage
For shipping damage, customers should file a claim with the carrier immediately. Any discrepancy, including wrong or missing items, should be reported to Natural Pigments within twenty-four (24) hours of receipt.
Back Orders
We do not accept backorders for out-of-stock items. If you order an out-of-stock item, we will email you when we expect that product to be available. You will be among the first to receive the item when it becomes available. Natural Pigments will not charge your credit card for out-of-stock items.