Lead Bisilicate

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pdf COSHH Sheet

Note: Currently not available for delivery to Europe, World Zone A, World Zone 2 and World Zone 1.

Description
Chemical Analysis
Health & Safety & Disposal

Description

Lead Bisilicate is a 'true' Lead Bisilicate in that it contains 65-66% Lead Oxide, 32% Silica and 2% Alumina which acts as a stabiliser. This formulation allows for two molecules of silica to bond with 1 molecule of lead forming a Lead Bisilicate.

Lead bisilicate is the frit generally used in low solubility glazes and standard borax frit for leadless glazes.

Low Sol.

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Chemical Analysis

% ANALYSIS

PbO = 65.04

Al2O3 = 2.55

SiO2 = 32.40

Health & Safety & Disposal

When handling powdered ceramic materials, you must wear an FFP3/P2 face mask and nitrile gloves to prevent inhalation and skin contact.
Wear a wipeable apron, polyester overalls, or similar. Clean or wash frequently.
Always clean your studio with a wet sponge rather than sweeping to stop dust from becoming airborne.
When preparing glazes, add the dry material to water, not vice-versa, to minimise dust formation.
Do not allow eating and drinking in the studio and thoroughly wash hands when leaving.
Never eat, drink, or apply cosmetics in areas where clay or glazes are handled.
Ensure emergency eye-washing facilities are available in the room.
Review official guidelines regarding studio ventilation and chemical management routinely.

Lead bisilicate is a ceramic glaze flux. While chemically treated to lower lead solubility, it remains a hazardous substance. Exposure to airborne dust or fumes can lead to lead poisoning, causing kidney, brain, and reproductive damage. The UK HSE strictly regulates its use.

This material and its container must be disposed of as hazardous waste. Dispose of contents/container in accordance with local/regional/national/international regulations.