What desiccant should be used for moisture-proof container transport?

Release Time：

2022-06-14

I learned from Hengyuan desiccant that moisture-proof agents are used in container shipping, and most choose container desiccants with calcium chloride as the raw material. Why not use desiccants with silica gel as the raw material for moisture-proof? As we all know, silica gel desiccants on the market are relatively cheaper than calcium chloride desiccants. So why don't we use silica gel desiccants for moisture and mildew prevention in containers?

Container What desiccant should be used for moisture-proof transportation? In Hengyuan Desiccant I understand that desiccants are used in container shipping, and most choose those with calcium chloride as the raw material. Container desiccant So why not use silica gel desiccants for moisture-proofing? It is well known that silica gel desiccants are relatively cheaper than calcium chloride desiccants on the market. So why aren't silica gel desiccants used for moisture and mildew prevention of goods in containers?

The reason is simple. Whether a desiccant can be used for moisture-proofing in container transportation depends primarily on its moisture absorption effect. As we all know, the moisture absorption rate of silica gel desiccant is much lower than that of calcium chloride, only about 20%. Furthermore, the continuous moisture absorption time of silica gel desiccant is short, only about a week. At the same time, the re-vaporization rate after moisture absorption is very high. Therefore, it can be said that silica gel desiccant not only cannot solve the problem of drying goods in containers, but also may cause secondary pollution and moisture damage to the goods.

　　Calcium chloride desiccant is different. Calcium chloride desiccant has a strong moisture absorption capacity. Container desiccants using calcium chloride as a raw material can have a moisture absorption capacity as high as 200%, with continuous moisture absorption lasting up to 90 days. Only this kind of desiccant can solve the problem of mildew and dampness of goods during container transportation.

　　 The above is why silica gel desiccant is not used for moisture-proofing in container transportation? For more information on Desiccant please follow Hengyuan desiccant.

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