Hydrated Lime
Calcium hydroxide · Ca(OH)₂ · slaked lime
High-purity slaked lime in six purity grades from 80% to 96% Ca(OH)₂. Fine mesh from 250 to 400. Consistent quality for water treatment, FGD, chemicals, food, construction, and agriculture, supplied across India and overseas from Rajasthan's limestone belt.
What is Hydrated Lime?
Hydrated Lime (Calcium Hydroxide, Ca(OH)₂) is produced by adding controlled amounts of water to Quick Lime (CaO). The result is a fine, dry white powder with high alkalinity, large surface area, and excellent reactivity.
Shreenath Metchem produces Hydrated Lime using high-purity Rajasthan limestone as the base raw material. We offer six purity grades from 80% to 96% Ca(OH)₂ with corresponding mesh sizes from 250 to 400, enabling you to select exactly the right grade for your process and budget. All grades maintain moisture below 0.5% for excellent shelf life and free-flowing properties.
Packing & Dispatch
How every grade is bagged and dispatched from the Jodhpur works.
| Bag sizes | 25 kg · 40 kg HDPE bags · 1000 kg jumbo bags (FIBC) |
|---|---|
| Bulk supply | Available on request |
| Dispatch | Road and rail, from Jodhpur across India, with supply to buyers overseas |
| Chemical name | Calcium Hydroxide · Ca(OH)₂ · Slaked Lime |
Industries We Serve
Where our Hydrated Lime is used, and what it does in each process.
Used for pH correction, softening, and heavy metal removal in water treatment plants, the largest-volume application of hydrated lime in India. It raises the pH of water until lead, zinc, and arsenic precipitate as insoluble hydroxides for filtration. Consistent Ca(OH)₂ content keeps dosing uniform at plant scale.
Used in flue gas treatment systems to neutralise SO₂, HCl, and HF from power plant and industrial boiler emissions, helping plants meet CPCB norms. Fine hydrated lime is blown into the exhaust duct, where high surface area maximises reagent utilisation and reduces consumption per tonne of treated gas.
A key raw material for bleaching powder, calcium hypochlorite, calcium stearate, and PVC stabilisers. It reacts with chlorine to produce calcium hypochlorite for water treatment and textiles, and with fatty acids to form calcium stearate for plastics. Purity decides reaction yield and the quality of the downstream product.
Used in cement mortars, lime plasters, and AAC block formulations, and for permanent soil stabilisation on highway and runway subgrades. There it reacts with clay minerals through cation exchange and pozzolanic reactions, permanently raising CBR. That cuts pavement thickness and avoids excavating weak foundation material.
Added to raw sugarcane juice during clarification, a standard step in every sugar mill. Lime raises the juice pH to 10-11, so proteins, waxes, and colloidal matter coagulate and settle, and CO₂ then precipitates the excess as calcium carbonate. Lime purity decides the colour and whiteness of the final crystals.
Integral to the kraft recovery cycle, where it causticises spent cooking liquor into white liquor. Ca(OH)₂ reacts with sodium carbonate to regenerate sodium hydroxide, and the calcium carbonate by-product is recalcined to quick lime. Consistent content holds causticising efficiency and cuts make-up lime per tonne.
Used for precise pH control during API synthesis and pharmaceutical intermediate manufacturing. Its controllable, moderate alkalinity suits sensitive reactions, and pH through synthesis and crystallisation decides the yield, polymorphic form, and particle size of the active ingredient.
Used for food-grade pH control, grain processing, and correcting acidic agricultural soils. Lime brings soil to the 6.0-7.0 range optimal for most crops, improving the availability of phosphorus, calcium, and trace nutrients while suppressing soil-borne pathogens.
Applied in the liming stage before tanning, where hides sit in lime solution at pH 12-13 for 12-24 hours. The alkalinity dissolves hair and swells the collagen network open, and how evenly tanning agents then penetrate governs the leather's softness and tensile strength.
In mercerising, cotton is treated with alkali under tension to swell the fibres, raising tensile strength, lustre, and dye affinity. In effluent treatment, hydrated lime lifts acidic dye-bath wastewater to pH 6-9, helping mills comply with CETP discharge standards.
Hydrated Lime FAQ
What is the difference between Hydrated Lime and Quick Lime?
Quick Lime (Calcium Oxide, CaO) is produced by calcining limestone at high temperature. Hydrated Lime (Calcium Hydroxide, Ca(OH)₂) is made by adding a controlled amount of water to Quick Lime, a process called slaking.
The result is a fine, dry white powder with high alkalinity and a large surface area. Hydrated Lime is safer and easier to handle than Quick Lime because it has already reacted with water, so it does not generate heat on contact with moisture.
Which purity grade should I order?
We manufacture six grades, from 80% to 96% Ca(OH)₂, so you can match purity to your process rather than paying for more than you need. Every grade holds MgO at or below 0.5%, Fe₂O₃ at or below 0.10%, and moisture at or below 0.5%.
Tell us your application, required reactivity, and mesh preference when you enquire, and our team will recommend the appropriate grade.
What packing sizes do you supply?
Hydrated Lime is supplied in 25 kg and 40 kg HDPE bags, and in 1000 kg jumbo bags (FIBC). Bulk supply is available on request.
Do you deliver outside Rajasthan?
Yes. We dispatch by road and rail from Jodhpur to industrial destinations across India, including Gujarat, Maharashtra, Madhya Pradesh, Uttar Pradesh and Haryana. We also supply buyers overseas. Share your delivery location with your enquiry and we will confirm logistics and lead time.
Can you provide a technical data sheet or batch analysis?
Yes. Send us an enquiry specifying the grade you are evaluating and we will provide the relevant documentation along with pricing and availability.
Need pricing for Hydrated Lime?
Leave your name and number. We will call back with grades, packing options and rates.