Salts & Minerals
REACH
Aluminium silicate
CAS Number
12141-46-7
EC Number
235-253-8
What is Aluminium silicate?
Aluminium silicate (CAS 12141-46-7), also designated E559 in food and pharmaceutical contexts, is a naturally derived inorganic mineral used industrially as a functional filler and rheology modifier.
Where is Aluminium silicate used?
- Rubber and tire manufacturing: reinforcing filler
- Paper: coating pigment improving printability and brightness, and enhancing ink receptivity in coated grades
- Plastics: adjusts melt viscosity and reduces shrinkage in filled polypropylene and polyethylene systems
- Building and construction: extender in paints, sealants, and cementitious coatings, contributing to opacity and reducing raw material costs
- It controls flow behavior, improves dimensional stability, and enhances surface properties in solid and coating applications.
Commercial specifications
- Particle size distribution is a key specification variable
- Calcined and surface-treated variants available to meet specific surface area requirements
Other Names (Synonyms)
aluminum silicate|Aluminum silicate, natural|Aluminum silicate, natural [JAN]|Adsorbin|Adsorbin (TN)|Natural aluminum silicate|RefChem:111693|Natural aluminum silicate (JP17)|E559
What are the physical properties of Aluminium silicate?
Density 3.247
Form fibers
How is Aluminium silicate classified and handled safely? Learn More
Danger
GHS08· Health Hazard
Hazard Statements
H372 Causes damage to organs through prolonged or repeated exposure
H373 May causes damage to organs through prolonged or repeated exposure
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P319 Get medical advice/attention if you feel unwell.
P501 Dispose of contents/container in accordance with local regulations.
Which trade and regulatory codes apply to Aluminium silicate?
WGK (Germany) 3