LIGNOSULFONIC ACID, CALCIUM SALT Chemical Properties

Density 

0.5 g/cm3

solubility 

H₂O: soluble

Appearance

Yellow-brown and orange-brown powder

Odor

at 100.00?%. odorless

PH

~4 (3wt. %)

Water Solubility 

H2O: soluble

Stability:

Stable. Incompatible with strong oxidizing agents.

Major Application

pharmaceutical (small molecule)

Cosmetics Ingredients Functions

SURFACTANT - EMULSIFYING

InChIKey

RYAGRZNBULDMBW-UHFFFAOYSA-L

LogP

-0.804 (est)

EPA Substance Registry System

Calcium lignosulfonate (8061-52-7)

Safety Information

WGK Germany 

1

TSCA 

TSCA listed

HS Code 

3913908000

Storage Class

11 - Combustible Solids

MSDS

• Language:English Provider:SigmaAldrich

LIGNOSULFONIC ACID, CALCIUM SALT Usage And Synthesis

Chemical Properties

yellow powder

Uses

Granulating agent for limestone and ores, compaction aid for coal and metal wastes, and dispersing agent for gypsum and clay slurries.

Definition

Calcium lignosulfonate, also known as calcium lignin sulfonate, is a compound derived from lignin, a natural polymer found in wood.

Synthesis

Lignin is insoluble in neutral liquids and organic solvents. To make lignin, there are two most common methods for separating cellulose, hemicellulose, and lignin; then calcium lignosulfonate is made from the (lignin-containing) pulp waste stream.

1. Sulphite pulp method This is a familiar hot acid solution of acidic calcium sulphite is used to treat the wood chips, in this cooking process part of the lignin is sulfonated, but also hydrolysis of the bonds occurs at the same time. The hydrolysis enables the lignosulfonate molecules to be solubilized in the slurry, and is also accompanied by the obtaining of other soluble (e.g., glycoconjugates) products, the solubility of which is essentially fixed.

2. Kraft pulp (i.e., sulfate) method

Another method is to treat the wood chips with a hot strong alkali solution, pH controlled in the range of 13~14, resulting in a mother liquor in which all the lignin is dissolved in, while hemicellulose is only partially dissolved in. The dissolved product can be modified to obtain different properties and a variety of specifications, thus making it a broad application prospects.

LIGNOSULFONIC ACID, CALCIUM SALT(8061-52-7)Related Product Information

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