Attapulgite clays
[CAS# 1337-76-4]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Silicide and silicate
• Name: Attapulgite clays
• Synonyms: dialuminum magnesium disilicate
• Molecular Formula: Al₂MgO₈Si₂
• Molecular Weight: 262.43
• CAS Registry Number: 1337-76-4 (12174-11-7)
• EC Number: 601-805-5
• SMILES: [O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[Mg+2].[Al+3].[Al+3]

Safety Data

• Hazard Symbols: GHS08 Warning
• Hazard Statements: H351
• Precautionary Statements: P203-P260-P263-P264-P270-P280-P318-P405-P501

Discovory and Applicatios

Attapulgite clays, also known as palygorskite, are naturally occurring magnesium aluminum phyllosilicate minerals with a unique fibrous structure. These clays were first identified in the southeastern United States, particularly in the region near the town of Attapulgus, Georgia, which gave the material its name. Attapulgite has since been discovered in other parts of the world, including China, Spain, and Senegal. The distinct crystalline structure of attapulgite, which consists of small elongated particles, provides the clay with several important properties that make it useful in a wide variety of industrial applications.

One of the key features of attapulgite is its high surface area and porosity, which allows it to absorb significant amounts of liquids. This property makes attapulgite highly effective as a thickening agent and suspension stabilizer in drilling fluids used in oil and gas extraction. In this application, attapulgite helps to control the viscosity of the drilling mud, ensuring efficient cutting removal and wellbore stability. The clay's absorbent capacity also finds use in the production of cat litter, agricultural chemicals, and industrial cleanup materials, where its ability to absorb oils, water, and other substances is beneficial.

Another notable application of attapulgite is in the pharmaceutical and personal care industries. Due to its excellent colloidal properties and ability to form stable gels, attapulgite is commonly used as an anti-diarrheal agent and in formulations for cosmetics and skincare products. It is considered non-toxic and biocompatible, making it safe for use in products that come into direct contact with humans. In addition, attapulgite is employed as a carrier for active ingredients in agrochemicals and pesticides, where it aids in the controlled release of substances.

In recent years, attapulgite has also attracted attention for its potential use in environmental remediation. Researchers have explored its use in treating wastewater and contaminated soils by utilizing its adsorptive properties to remove heavy metals and organic pollutants. This ability to act as an environmentally friendly adsorbent has positioned attapulgite as a promising material in efforts to address environmental pollution.