Siliconates & Specialty Auxiliaries
Silicone-Based pH Adjuster for Paints | Manta WS168
Manta WS168 is a concentrated, water-based, solvent-free methylsiliconate solution used as a silicone-based pH adjuster in waterborne emulsion paints, plasters and primers. Unlike volatile amines such as AMP or ammonia, it both neutralizes and stabilizes system pH and contributes to the water repellency and scrub resistance of the dried coating film.
- Grade
- WS168
- Chemical Name
- Aqueous solution of methylsiliconates
- Form
- Clear to slightly hazy, colorless liquid
Overview
Manta WS168 is a concentrated, water-based and solvent-free methylsiliconate solution, formulated as a silicone-based pH adjuster for waterborne emulsion paints. Unlike conventional organic amines, it neutralizes and stabilizes the pH of the system and also contributes to the performance of the dried coating film.
The silicone backbone integrates into the coating matrix and raises the water repellency of the final paint film, an advantage over standard volatile amines. It also contributes to the mechanical resistance and scrubability of dried architectural coatings, and it is suited to waterborne paints, plasters and primers where strict VOC regulations, low odor requirements and enhanced film properties are important.
Other siliconates in the range are used differently. Manta MSEP, a potassium methyl siliconate, serves mainly as a penetrating water repellent and as a performance additive in coatings and alkali silicate paints, while WS168 is formulated as a pH adjuster, with an active content of approx. 50%.
Key Features
- Buffers and maintains the target pH of emulsion paints
- Contributes to good storage stability
- Silicone backbone integrates into the coating matrix for higher water repellency
- Improves mechanical resistance and scrubability of dried coatings
- Solvent-free and VOC-compliant
- Suited to ultra-low-VOC, low-odor interior and exterior paints
Cross-Reference
Manta WS168 can be considered as an alternative to Wacker SILRES BS 168.
Trademarks are the property of their respective owners; no affiliation is implied.
Specifications
| Property | Typical Value |
|---|---|
| Appearance | Clear to slightly hazy, colorless liquid |
| Active Content (%) | approx. 50 |
| Density (25°C, g/cm³) | approx. 1.4 |
| pH Value | 13.0 - 14.0 |
Typical values from the current Technical Data Sheet.
Applications
- Waterborne architectural paints: pH adjuster that replaces conventional volatile amines such as 2-amino-2-methyl-1-propanol (AMP) or ammonia, or harsh inorganic bases
- Plasters and primers: systems where strict VOC regulations, low odor requirements and enhanced film properties are important
- Low-odor interior and exterior paints: solvent-free pH neutralizer for formulating ultra-low-VOC paints
Formulation Guidelines
To ensure safe handling and optimal performance within the coating matrix, please adhere to the following guidelines:
- Pre-Dilution: For ease of application and to prevent localized pH shocks (alkaline burns) to the polymer emulsion, it is strictly recommended to pre-dilute Manta WS168 with water at a ratio of 1:3 (1 part WS168 to 3 parts water) prior to addition.
- Addition Method: Always incorporate the diluted solution slowly under continuous and adequate stirring to avoid local high pH spikes.
- Dosage: The exact dosage depends heavily on the specific paint formulation and the initial pH of the binder system. Add the diluted Manta WS168 incrementally until the target pH is achieved (e.g., pH 9.5 is typical for standard architectural emulsion paints).
Related applications: Paints & Coatings
Packaging & Storage
Supplied in 25 kg plastic drum, 200 kg plastic drum, or 1000 kg IBC tote.
Safety and Storage
Handling Precautions: Due to its high pH (13-14), Manta WS168 is strongly alkaline and corrosive in its liquid state. Appropriate personal protective equipment (PPE), including chemical safety goggles and alkali-resistant gloves, must be worn during handling.
Storage Conditions: Store indoors in tightly sealed, original plastic containers in a cool, dry, and well-ventilated area.
Shelf Life: Protect from frost and extreme heat. When stored correctly, the shelf life is typically 12 months from the date of manufacture. Quality verification is recommended before use if stored beyond this period.
Documents
- Technical Data Sheet · PDF Download TDS
- SDS and COA · on request Request Documents
Frequently Asked Questions
How do I add Manta WS168 to an emulsion paint without causing pH shock?
Pre-dilute WS168 with water at 1:3 (1 part WS168 to 3 parts water), then add the diluted solution slowly under continuous, adequate stirring to avoid local high pH spikes. Dose incrementally until the target pH is reached, for example pH 9.5 for standard architectural emulsion paints, because the exact dosage depends on the paint formulation and the initial pH of the binder system.
What conventional neutralizers can WS168 replace?
WS168 is recommended to replace conventional volatile amines such as AMP or ammonia, or harsh inorganic bases. Being solvent-free and VOC-compliant, it suits ultra-low-VOC, low-odor paints, and its silicone backbone also raises the water repellency and scrubability of the dried film.
Can I test Manta WS168 before placing an order?
Yes. Samples are charged. The sample fee includes courier delivery and is deducted from your first formal order. Use Request a Sample and tell us the quantity and your paint system. The TDS is on this page; SDS and COA are available on request.
Related Products
WS168 is one step in the building protection formulation chain. One inquiry can cover the other raw materials in your formulation, with samples, technical documents, quotation and shipment handled together.
- Alkyl Silane Actives
- Emulsions & Pastes
- Siliconate Liquids & Powders
- Waterproof Coatings
Looking for a different purity, functional group, or a structure not listed here? Contact our technical team.
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