Description

Calcium Naphthalene-2,7-Disulphonate is an organosulfonate salt derived from naphthalene disulfonic acid. This compound is valued for its role as a high-performance dispersant and crystal habit modifier in various industrial processes. It is primarily utilized in sectors requiring precise control over particle formation and suspension stability, such as construction materials and specialty chemical manufacturing.

Application

• Concrete Admixtures: Acts as a highly effective superplasticizer and water reducer to improve the workability and strength of concrete.
• Dye and Pigment Industry: Serves as a dispersing agent to stabilize dye and pigment suspensions, preventing agglomeration.
• Agricultural Formulations: Used as a wetting and dispersing agent in pesticide and herbicide concentrates.
• Oilfield Chemicals: Functions as a fluid loss additive and dispersant in drilling mud formulations.
• Textile Processing: Employed as a leveling agent and dispersant in dyeing processes to ensure uniform color.
• Ceramic Production: Aids in the dispersion of ceramic powders for slip casting and other forming processes.

Basic Information

Product Name	Calcium Naphthalene-2,7-Disulphonate
CAS No.	94166-69-5
Molecular Formula	C20H10CaO6S2 (for the disulfonate salt)
Molecular Weight	Contact for details
Synonyms	Calcium 2,7-Naphthalenedisulfonate; Calcium Naphthalene-2,7-Disulfonate; 2,7-Naphthalenedisulfonic Acid Calcium Salt; Naphthalene-2,7-disulphonic Acid Calcium Salt; Calcium Dinaphthalenesulfonate; Dispersant S; Concrete Superplasticizer; Calcium Salt of Naphthalenesulfonic Acid Formaldehyde Condensate
EINECS	Contact for details

Quality Control

Our Calcium Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance as a dispersant. Key parameters such as purity, sulfonate content, and pH are verified. A Certificate of Analysis (COA) documenting these results is available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms
Assay (as Calcium Salt)	Min. 90%
pH (1% Solution)	7.0 - 9.0
Moisture Content	Max. 5.0%
Sulfate Ash	Contact for details
Chloride Content	Max. 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.