Magnesium Sulphate Heptahydrate 2-4mm White Crystal

1. Appearance characteristics: It is usually a colorless and transparent columnar or needle-shaped crystal with a glassy luster on the surface. It may weather and appear slightly white powdery on the surface after being left in the air for a long time.

2. Good solubility: It is easily soluble in water, and its aqueous solution is colorless and transparent. The solubility varies at different temperatures, and the solubility increases with increasing temperature.

3. Stable chemical properties: It is chemically stable at room temperature and pressure and under general storage conditions. However, under heating conditions, it will gradually lose crystal water, forming magnesium sulfate crystals or anhydrous magnesium sulfate with different amounts of crystal water at different temperature stages.

4. Weakly acidic: Its aqueous solution is weakly acidic, because magnesium ions undergo a weak hydrolysis reaction in water, making the hydrogen ion concentration in the solution slightly higher than the hydroxide ion concentration.

5. It has a certain degree of hygroscopicity: It can absorb moisture in the air and may deliquesce in a humid environment.

6. Wide range of uses: It has important uses in agriculture, industry, medicine, food and other fields. It can be used as fertilizer, chemical raw material, medicine, food additive, etc. It is a chemical product with high economic value.

The storage method of magnesium sulfate crystals needs to consider its hygroscopicity, chemical stability and other characteristics. The following are specific storage requirements:

1. Dry environment: Since magnesium sulfate crystals are hygroscopic and easily damp and agglomerated, they should be stored in a dry warehouse, and the indoor relative humidity should be kept below 70%. 

2. Sealed storage: In order to prevent contact with air to absorb moisture and carbon dioxide, etc., which affects product quality, sealed packaging should be used. If the packaging is found to be damaged, it should be replaced in time.

3. Avoid mixed storage: Magnesium sulfate crystals should be stored separately from acids, alkalis, oxidants, etc. to avoid chemical reactions. 

4. Cool and ventilated: The storage temperature should not be too high, generally it should be controlled below 30°C, and the warehouse should be well ventilated and avoid direct sunlight to prevent the magnesium sulfate crystals from losing their crystal water or undergoing other chemical changes due to heat.

Q1: What is the payment terms?

T/T with deposit in advance or L/C at sight.

Q2: Can the color of product be changed?

Yes, it can be different colors, the popular colors are blue, green, white. We can also change the color as per customers’ requirement. 

Q3: Is it possible for customers to use customized bags?

Yes, customized bags is acceptable. Customers can provide the artwork of customized bags. Or we can design the bags according to customers’ requirement.

Q4: Is it possible for getting the samples?

Yes, samples are provided freely. 

Q5: How do you control the quality of your products? 

We will do a test by our own lab during the production for every shipment. And we can send our samples to a third party laboratory.