What is Silica Matting Agent CAS 7631-86-9 used for?

It is a micronized synthetic amorphous silica that controls gloss in coatings, printing inks, and leather finishes. When cured, the particles create controlled micro-roughness on the film surface and scatter light to produce a uniform matte, eggshell, or satin finish.

What is the difference between untreated and wax-treated silica matting agent?

Untreated grades generally disperse quickly and give high optical clarity, making them well suited to many solvent-borne systems. Wax-treated grades improve anti-settling, suspension stability, and compatibility in waterborne or UV-curable systems, and may also improve slip and scratch resistance.

Which coating systems are compatible with this matting agent?

Grade selection is the key factor: suitable grades can be used in waterborne, solvent-borne, and 100% solid UV-curable systems. Surface-treated grades are usually preferred for aqueous systems to avoid viscosity rise, poor gloss control, or a rough feel.

How should Silica Matting Agent be incorporated during coating production?

It is normally added during the let-down stage using standard high-speed dispersion equipment. Grinding is usually unnecessary and can over-shear the particles, so the powder should be dispersed until uniform without excessive shear.

Which specifications matter most when selecting a matting agent grade?

Particle size distribution, pore volume, silica purity, surface treatment, and pH are the main factors. Finer, narrowly distributed particles tend to give a smoother finish and better transparency, while higher pore volume typically improves matting efficiency.

Silica Matting Agent CAS 7631-86-9

Silica Matting Agent, CAS 7631-86-9, a micronized synthetic amorphous silica supplied as a powder, is positioned for gloss control in coatings, printing inks, and leather finishes. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 7631-86-9
Synonyms: Silicon Dioxide Matting Agent, Flatting Agent, Gloss Reducing Agent, Silica Gel Powder
Einecs: 231-545-4
Molecular Formula: SiO2
Grade: Industrial / coating grade
Package: Standard export packaging

Request a quote

Share:

Product Description

Silica Matting Agent CAS 7631-86-9 is a micronized synthetic amorphous silica with EC 231-545-4 and molecular formula SiO2.

Synonyms: Silicon dioxide; Silica gel powder; Flatting agent; Gloss reducing agent.

CAS: 7631-86-9.

Molecular formula: SiO2.

It is supplied as a white powder for use as a matting or flatting agent.

It controls gloss in coatings, printing inks, and leather finishes.

The particles create controlled micro-roughness on the film surface and scatter light.

It produces a uniform matte, eggshell, or satin finish.

Both untreated and wax-treated grades are available for different coating systems.

It is used in waterborne, solvent-borne, and 100% solid UV-curable systems.

Confirm particle size distribution, pore volume, silica purity, surface treatment, and pH.

Select the grade based on the coating system, dispersibility, and gloss target.

Store in tightly closed containers in a cool, dry, well-ventilated area away from moisture.

Use appropriate PPE and prevent dust, spills, or contamination.

Confirm packaging suitable for the powder form and order quantity, and follow the current SDS.

Every batch is checked for particle size, pore volume, purity, surface treatment, and pH, with COA/TDS/SDS supplied per grade.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Silica Matting Agent CAS 7631-86-9 used for?

A: It is a micronized synthetic amorphous silica that controls gloss in coatings, printing inks, and leather finishes. When cured, the particles create controlled micro-roughness on the film surface and scatter light to produce a uniform matte, eggshell, or satin finish.
Q:
What is the difference between untreated and wax-treated silica matting agent?

A: Untreated grades generally disperse quickly and give high optical clarity, making them well suited to many solvent-borne systems. Wax-treated grades improve anti-settling, suspension stability, and compatibility in waterborne or UV-curable systems, and may also improve slip and scratch resistance.
Q:
Which coating systems are compatible with this matting agent?

A: Grade selection is the key factor: suitable grades can be used in waterborne, solvent-borne, and 100% solid UV-curable systems. Surface-treated grades are usually preferred for aqueous systems to avoid viscosity rise, poor gloss control, or a rough feel.
Q:
How should Silica Matting Agent be incorporated during coating production?

A: It is normally added during the let-down stage using standard high-speed dispersion equipment. Grinding is usually unnecessary and can over-shear the particles, so the powder should be dispersed until uniform without excessive shear.
Q:
Which specifications matter most when selecting a matting agent grade?

A: Particle size distribution, pore volume, silica purity, surface treatment, and pH are the main factors. Finer, narrowly distributed particles tend to give a smoother finish and better transparency, while higher pore volume typically improves matting efficiency.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language