Effective solutions


Advanced systematic Mold Inhibition Technology


Mold inhibitor technology containing propionic acid and/or ammonium di-propionate

Product Specification

EFFICACY AND USES As a mold inhibitor in animal feedstuffs, grain and feeds. Safe for all livestock.
COLOR Dark brown granulate.
STORAGE Dry and cool location. Avoid contact with direct sunlight.

One year in sealed original factory package


Add at the rate of 1/2 kilogram or more per metric ton of grain or feed.


Dinaprop Liquid

Dinaprop Dry­-Buffered

Dinaprop Dry-

Ammonium Propionate 96 48 N/A
Propionic Acid 2-4 1-2 50
Inert Carrier N/A ~50 50


What are mold inhibitors?
Mold inhibitors are products that contain compounds which inhibit or kill mold to protect the feeds against the harmful effects of mycotoxins.

DINAPROP is a brand of mold inhibitor that contains propionic acid and/or ammonium di-propionate. There are both dry and liquid presentations of the buffered version.

DINAPROP BUFFERED is another form of mold inhibitor like DINAPROP REGULAR which is formulated to improve quality and minimize the deleterious effects caused by pure propionic acid. DINAPROP BUFFERED comes in two forms liquid and dry.

Is the content of DINAPROP BUFFERED and DINAPROP REGULAR simi­lar?
No. DINAPROP REGULAR contains pure propionic acid which is absorbed in a dry mineral carrier. DINAPROP BUFFERED is made by the reaction of propionic acid and ammonium hydroxide resulting in ammonium di-propionate. Propionic acid is likewise included to make the product flow properly and to make it more effective than containing just ammonium di-propionate alone. Based on the studies conducted, ammonium di-propionate is the closest to propionic acid in effectiveness because of its ability to release free propionate ions.

What are the similarities and differences on how DINAPROP REGU­LAR and DINAPROP Buffered work?
Both preparations are intended to kill or inhibit mold growth by interfering with cellular respiration. DINAPROP REGULAR kills or inhibit mold by fumigation through the release of propionic acid.

DINAPROP BUFFERED intervenes with cellular respiration by penetrating the cell membrane in the undissociated form and then rapidly dispersing within the cell membrane causing rapid acidification of the cytoplasm.

How much DINAPROP regular, liquid or buffered will I use per ton of feed?
DINAPROP Buffered is included at a minimum level of 1/2 kilo­gram per metric ton of feed or grain. When feed grain has much higher moisture than normal then the application rate should be in­creased proportionately.

What are the compounds that are used as mold inhibitors?
Acetic acids, formic acids, potassium sorbate and propionic acid are some of the compounds that are used for mold inhibi­tion. However, it is widely proven by researchers that PROPIONIC ACID is the most potent compound to stop mold growth. Pure propionic acid is very corrosive and should not be used in conjunction to metallic silos due to high corrosion rate.

Why do we need to use a mold inhibitor like DINAPROP?
Mold inhibitors are products formulated to prevent the proliferation of toxins produced by molds called “mycotox­ins”. Molds are always present and they only need moisture, temperature, oxygen and an adequate food source to reproduce. Mold growth begins with the harvesting process, mechanical handling of grains, storage facilities, mixing and feeders in animal houses. Once molds grow, they start to produce mycotoxins which eventually create damage to feed nutrient and animals.

Advantages of using DINAPROP BUFFERED instead of using DINAPROP REGULAR DRY
It is widely documented that pure propionic acid is much more corrosive than the attenuated or buffered forms. The pH of DINAPROP BUFFERED is approximately 6.0 to 7.0 which is similar to the pH of feed stuffs. propionic acid in its pure form is highly volatile and using BUFFERED DINAPROP will reduce volatility. This means that the ingredient has a greater degree of residual value. This is important where feed transport time and usage is relatively lengthy. BUFFERED DINAPROP minimizes the risk of injury to workers.

Extended exposure of workers to propionic acid will cause irrita­tion and contamination to clothing. Also inhalation of the vapors for an extended period of time may be conducive to respi­ratory difficulties. Because of the reduced volatility of DINAPROP BUFFERED these problems are reduced to "0".

Is there an advantage in combining several organic acids in a mold inhibitor?
It has been reported and proven at the University of Geor­gia there are no synergisms in combining organic acids. Since other acids are less effective than propionic acids and ammonium di-propionate their addition to the formula will result in over‑all reduction of efficacy.

Aside from mold inhibition does DINAPROP exhibit bacte­ricidal effect?
Yes. Depending on the level, DINAPROP can reduce e. Coli and kill Salmonella in the digestive tract of the animals thereby improving the animal performance.