99% Magnesium Sulfate Heptahydrate Fertilizer Granules 2-4mm

Magnesium sulfate heptahydrate (molecular formula MgSO₄ 7H₂O), also known as sulfurous acid, bitter salt, cathartic salt, and cathartic salt, occurs as white or colorless needle-shaped or oblique columnar crystals. It is odorless and has a slightly bitter, cool taste. Its molecular weight is 246.47 and its specific gravity is 1.68. It is freely soluble in water, slightly soluble in ethanol and glycerin, and soluble in its own water of crystallization at 67°C (according to the Chemical Handbook). Upon heating, it contains no more than four molecules of water of crystallization at 70°C and 80°C. At 200°C, all water of crystallization is lost, rendering it anhydrous. It readily dries to a powder in air. Upon heating, it gradually loses its water of crystallization, becoming anhydrous magnesium sulfate. This product contains no toxic impurities.

Because magnesium sulfate heptahydrate is less soluble, it is easier to weigh than anhydrous magnesium sulfate, making it easier to control quantitative quantities in industry. It is primarily used in the manufacture of fertilizers, leather, printing and dyeing, catalysts, papermaking, plastic chemicals, books, porcelain, pigments, matches, explosives, and fireproofing materials. It can be used for printing and dyeing thin cotton and silk, as a weighting agent for cotton yarn, and as a filler for kapok products. It is also used medicinally as epsom salt.
 

Applications
1. Used as a raw material for the manufacture of magnesium salts.
2. Used as a chemical reagent and analytical reagent.
3. Used in the printing and dyeing industry. It is used as a color-developing salt for blue dyes and as an alkali absorbent in black solutions to ensure a pH between 6 and 7 for uniform dyeing.
4. Also used as a cement flame retardant, paper filler, and textile weighting agent.
5. As a feed additive, anhydrous magnesium sulfate is primarily used in feed additives as a supplement for the trace element magnesium.
6. As a desiccant.
7. Used as a fertilizer for potted plants or magnesium-deficient crops, such as tomatoes, potatoes, and roses.
8. Also used as a bath salt.
9. Also used in the leather, explosives, papermaking, and porcelain industries.

Storage
Store in a ventilated, dry warehouse. Packaging containers must be sealed to prevent moisture and separated from dehumidified items. During transportation, protect from rain and exposure. Handle gently to prevent damage to the packaging.

FAQ
1: How do we guarantee the quality?
Always pre-production samples before mass production;
Always final inspection before shipment;
2: What can you buy from us?
Magnesium sulfate, ferrous sulfate, ammonium sulfate, copper sulfate
3: Why should you buy from us instead of other suppliers?
We provide high quality products at affordable prices
4: What services can we provide?
Accept delivery terms: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express, DAF, DES;
Accept payment currencies: USD, EUR, JPY, CAD, AUD, HKD, GBP, CHF;
Accept payment methods: T/T, L/C, MoneyGram, PayPal, Western Union, Cash, Escrow;
Languages spoken: English, Chinese, Spanish, Portuguese, German, French, Italian