Why specify calcium lignosulfonate instead of sodium lignosulfonate?

The calcium and sodium salts are related lignosulfonates but can behave differently in a formulation. The target cement system, required set response, solids basis and compatibility with other admixtures should determine which salt is selected.

What properties should be included in a calcium lignosulfonate purchase specification?

Physical form, solids, pH, water-insoluble matter, reducing sugars, calcium content, moisture for powder grades and the intended application should be stated. A concrete trial is needed to confirm water reduction and set behaviour.

Calcium Lignosulfonate CAS 8061-52-7

Calcium lignosulfonate, also known as calcium lignin sulfonate, CAS 8061-52-7, is a lignin-based dispersant for conventional concrete water-reducer, set-retarder and industrial processing formulations. Powder and liquid grades are specified by solids and pH, with COA, TDS and SDS for the agreed product.

CAS: 8061-52-7
Synonyms: Calcium lignosulfonate; Calcium lignin sulfonate; Lignosulfonic acid calcium salt
Einecs: Not specified (lignosulfonate polymer)
Molecular Formula: Not specified (lignosulfonate polymer)
Grade: Construction and industrial dispersant grade; solid content and impurity controls to be agreed
Package: 25 kg bags for powder grades or drums/IBCs for liquid grades, depending on solids and formulation use
Appearance: Light-brown powder or liquid grade
Product family: Lignin-based calcium salt dispersant
Primary controls: Solids, pH, water-insoluble matter, reducing sugars and calcium content
Construction role: Conventional water reducer and set-retarder component
Evaluation: Confirm in the intended cement and admixture system

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Product Description

Calcium lignosulfonate (CAS 8061-52-7) is a lignin-based calcium salt used as a dispersant and conventional water-reducing component. It is relevant to ready-mix concrete, precast, masonry mortar and selected industrial processing systems, but its effect on setting, workability and strength development depends on cement type, admixture dosage, mix water and other formulation components.

1 Applications

2 Specification points

3 Concrete use

Applications

Concrete and mortar admixtures where a conventional water reducer or mild retarder is appropriate.
Precast, paver and masonry systems that require workability adjustment at controlled dosage.
Binder and dispersant applications for mineral, carbon, ceramic or fertiliser granulation processes.
Dust-control and bulk-material processing formulations where a lignin-based binder is suitable.

Specification points

Specify powder or liquid form, solids basis, pH, water-insoluble matter, reducing sugars, calcium level and the target cement system. Sodium lignosulfonate is a related material, but the counter-ion and final formulation can affect handling and performance.

Concrete use

Water reduction and set response should be evaluated in the actual cement, aggregate and admixture system. A general dosage statement is not a substitute for a mix trial.

FAQ - Technical & Supply Chain

Q:
Why specify calcium lignosulfonate instead of sodium lignosulfonate?

A: The calcium and sodium salts are related lignosulfonates but can behave differently in a formulation. The target cement system, required set response, solids basis and compatibility with other admixtures should determine which salt is selected.
Q:
What properties should be included in a calcium lignosulfonate purchase specification?

A: Physical form, solids, pH, water-insoluble matter, reducing sugars, calcium content, moisture for powder grades and the intended application should be stated. A concrete trial is needed to confirm water reduction and set behaviour.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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