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Help CenterIndustrial Grade Bone Ash Grey White Ash
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Product Description
Bone ash is made from selected bones properly leached, ground, chemically treated, calcined by a special procedure and milled to a small particle size. Our bone ash is obtained by roasting degelatinized bone up to a temperature of approximately 1100° C. Afterwards, the bone ash is cooled and ground to a fine particle size so that a minimum of 95% will pass through a 325-mesh (U.S. Standard) sieve or through a 20-mesh sieve for 20 mesh bone ash. The excellent properties of bone ash is attributed to the internal structure of the small, individual particles. The original cellular structure of the bone is preserved, thus giving the material a high resistance to heat transfer (natural thermal insulator). Bone ash is primarily tri-calcium phosphate or a form of calcium hydroxyapatite.
| Source | Cattle,sheep |
| Poruduct modality | Powder or granule |
| Usage | Mold release,Component of ceramic,animal feed |
| Place of origin | China(Mainland) |
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Product usage
Product Properties
Bone ash has the following intrinsic properties:
• Has excellent non-wetting properties
• Is chemically inert and free of organic matter
• Has high resistance to heat transfer (natural thermal insulator)
In painting grounds, it makes a durable surface while adding some tooth especially for egg and casein tempera, distemper, encaustic and oil painting. Use in chalk and gesso grounds to increase absorbency and add texture. Bone ash is used in Cennino's recipe for silverpoint grounds.
Add to oil colors and mediums to create textural and bodying qualities to oil paint without affecting the color. Bone ash has little color in drying oil, so it can be added to oil paint without affecting the color temperature.
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