How to detect magnesium oxide expired

How does magnesium oxide judge to have expired, how should go detecting? According to xiaobian from the understanding, magnesium oxide after the shelf life will generally affect its activity. Normally, magnesium oxide is a white powder, but as magnesium oxide expires, the color will change significantly. The whiteness of the color is reduced. In addition, the shape of the magnesium oxide changes, such as caking and so on. This is clearly expired magnesium oxide.

Then check the storage conditions of magnesium oxide, magnesium oxide is a very easy to absorb moisture, if there is no moisture-proof work in the process of storage or transportation, it is likely to cause the degeneration of magnesium oxide, lose its use value. In daily work, magnesium oxide can be protected in the following ways to avoid water absorption deterioration:

1, cover plastic film, plastic film on the ground, if you do not want to pour bags for packaging, can use this method moistureproof;

2, in the palletizing placed lime blocks moisture-proof, this is another way to prevent magnesium oxide moisture absorption and prevent the reduction of activity;

3, because calcium oxide has stronger moisture absorption, calcium oxide is placed in the warehouse, used as a moisture reducer, to reduce the humidity of the warehouse, very effective;

Take a look at how long the shelf life of magnesium oxide, beyond the shelf life can still be used? If magnesium oxide exceeds the shelf life, we need to see where magnesium oxide is used. In general, if there is no obvious change in the appearance of magnesium oxide, we suggest retesting the activity of magnesium oxide. Magnesium oxide detection through professional testing equipment can be quantitative and accurate determination of the activity of magnesium oxide. Ensure that the product quality will not be affected due to the loss of activity and misuse caused by too long time.

The above is how to detect magnesium oxide has expired several methods brought by xiaobian, I hope to help you.