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 pan-India from Rajasthan's limestone belt.
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.
Used for pH correction, water softening, and heavy metal removal in municipal and industrial water treatment plants. The largest-volume application of hydrated lime in India.
Hydrated lime raises the pH of water, causing dissolved metals such as lead, zinc, and arsenic to precipitate as insoluble hydroxides for filtration. In softening, it reacts with calcium and magnesium bicarbonates to reduce water hardness. Consistent Ca(OH)₂ content ensures uniform dosing and reliable performance across large treatment volumes.
Used in flue gas treatment systems to neutralise SO₂, HCl, and HF from power plant and industrial boiler emissions, helping plants meet CPCB emission norms.
In dry injection systems, fine hydrated lime is blown into the exhaust duct where it reacts with acid gases on contact. In semi-dry systems, a lime slurry is atomised into the gas stream. High surface area maximises reagent utilisation, reducing lime consumption per tonne of treated gas and lowering overall operating cost.
A key raw material for bleaching powder, calcium hypochlorite, calcium stearate, and PVC stabilisers. Consistent Ca(OH)₂ content and purity are critical across all these downstream applications.
It reacts with chlorine to produce calcium hypochlorite, widely used in water treatment and textiles. It reacts with fatty acids to form calcium stearate, a lubricant and stabiliser used in plastics processing. Minor variation in purity affects reaction yield and the quality of the downstream chemical product.
Used in cement mortars, lime plasters, and AAC block formulations. Also applied for permanent soil stabilisation on highway and runway subgrades to improve load-bearing capacity.
In soil stabilisation, hydrated lime reacts with clay minerals through cation exchange and pozzolanic reactions, permanently increasing the CBR value of subgrade soils. This reduces the required pavement thickness and eliminates costly excavation of weak foundation material on large highway and runway projects.
Added to raw sugarcane juice during clarification to remove non-sugar impurities and produce clear juice for crystallisation. A standard process step in every sugar mill.
Lime raises the juice pH to 10-11, causing proteins, waxes, and colloidal matter to coagulate and settle. CO₂ is then introduced to precipitate excess lime as calcium carbonate, which also functions as a filter aid. Lime purity determines the clarity of clarified juice and the colour and whiteness of the final sugar crystals.
Integral to the kraft pulp recovery cycle, where it causticises spent cooking liquor into active white liquor for reuse in pulp cooking.
Ca(OH)₂ reacts with sodium carbonate in the spent liquor to regenerate sodium hydroxide for use as cooking chemical. The calcium carbonate by-product is calcined back to quick lime, completing the recovery loop. Consistent Ca(OH)₂ content is important for maintaining causticising efficiency and minimising make-up lime per tonne of pulp.
Used for precise pH control during API synthesis and pharmaceutical intermediate manufacturing, supplied in tested batches for GMP-compliant production.
pH control during synthesis and crystallisation steps determines the yield, polymorphic form, and particle size of the active pharmaceutical ingredient. Hydrated lime offers controllable, moderate alkalinity well-suited to sensitive reactions. Our batches are tested for heavy metals, arsenic, and microbiological limits against pharmacopoeial standards.
Used for food-grade pH control and grain processing, and for correcting acidic agricultural soils to improve crop yield and nutrient availability.
In agriculture, lime corrects soil pH to the 6.0-7.0 range optimal for most crops, improving availability of phosphorus, calcium, and trace nutrients while suppressing soil-borne pathogens. In grain processing, lime solution treatment improves nutritional profile and digestibility. Food-grade batches are tested for safety and purity before supply.
Applied in the liming stage to remove hair and open the collagen structure of raw hides before tanning. Lime quality at this step directly determines the outcome of the finished leather.
Hides are immersed in lime solution at pH 12-13 for 12-24 hours. The high alkalinity dissolves hair and the outer epidermis while swelling and opening the collagen fibre network. How well this step is performed determines how evenly tanning agents penetrate and bind, which governs the softness and tensile strength of the finished leather.
Used in cotton fibre treatment to improve dye uptake and fabric strength, and to neutralise acidic dyeing effluent before discharge to meet CETP standards.
In mercerising, cotton is treated with alkali under tension to swell the fibres, increasing tensile strength, lustre, and dye affinity. In effluent treatment, hydrated lime neutralises highly acidic dye-bath wastewater to pH 6-9 before biological treatment, helping textile mills comply with Central Effluent Treatment Plant discharge standards.
Send us your requirements and we'll respond within 1 business day.
From 80% to 96% Ca(OH)₂, select the grade your process needs. Contact us for pricing and availability.