MTDA® B Grinding Aids

A Family of Grinding Aids from a Renewable Source¹

Product Description

MTDA® B is a patented combination of traditional glycol and glycol from a renewable source. It is supplied as a non-toxic opaque liquid miscible with water. The renewable component in the formulation may vary from 20% to 80% depending upon the particular product selected. The various MTDA® B renewable formulas have specifications that fall within the following ranges:

  • Specific Gravity: 1.11 - 1.19
  • pH: 6.0 - 10.0
  • Total Solids: 69.0 – 81.0

Product Advantages 

  • Lower grinding aid price/lb resulting from a low cost renewable ingredient
  • Lower grinding aid cost per ton of cement produced
  • ➡ Dosage may be equivalent to or slightly higher than traditional glycol grinding aids
  • Grinding aid cost that is more stable over time because of price stability of renewable source
  • Consistent additive quality due to GCP strict quality control specifications


In general, pumpability of MTDA® B will be similar to that of traditional grinding aids at comparable temperatures.

68°F (20° C) 32 – 52 cP
41°F (5° C) 52 – 120 cP
-4°F (-20° C) 300 – 400 cP


    MTDA® B may be sprayed as received into the mill’s first compartment or added onto the clinker conveyor belt. Dilution with up to 8 parts water is recommended to ensure greater proportioning accuracy and better distribution of MTDA® B. Suitable proportioning pumps with adjustable flow rates should be used for consistent performance of the additive.

    Addition Rates

    The dosage rate of MTDA® B will depend on the fineness and the reagglomeration characteristics of each cement. Typical dosage rates will vary from 0.02% - 0.06% by weight of cement for Types I & II cements and from 0.04% - 0.08% by weight of cement for Type III cements. Dosage rates may be similar to, or somewhat higher than, conventional glycol grinding aids. The optimum dosage rate must be determined during full scale cement mill testing.

    Dosing Equipment

    GCP grinding aids should be accurately dispensed through a calibrated dosing system, suitable for the cement mill and output required.

    Specification Compliance

    MTDA® B is approved for use under ASTM C-465 specification as a non-harmful processing addition for cements.


    MTDA® B is supplied in bulk by tanker truck. It contains no flammable materials.


    Protect from freezing. Once frozen, the product should be thawed out slowly and re-mixed thoroughly prior to use.

    Technical Services

    Field Engineers from GCP are available to assist in laboratory and mill test evaluations of MTDA® B. Complete testing equipment and methods for analyzing mill performance and pack set index are also available during plant trials.

    ¹Use of formulations for cement grinding is covered under U.S. Patent Number 7922811. | North America customer service: 1-877-4AD-MIX (1-877-423-6491)

    We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

    MTDA is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

    © Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

    GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 475, Alpharetta, GA 30009, USA
    GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
    This document is only current as of the last updated date stated below and is valid only for use in the Canada. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

    Last Updated: 2024-06-21