MilliporeSigma
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370959

Sigma-Aldrich

Lignin, alkali

Synonym(s):
Lignin, kraft
CAS Number:
MDL number:
NACRES:
NA.23

description

surface tension 43 mN/m (1% aqueous)

Quality Level

form

powder

impurities

5% moisture

loss

13.4 wt. % loss on heating, @ 316°C
3.3 wt. % loss on heating, @ 149°C
5.7 wt. % loss on heating, @ 204°C
8.5 wt. % loss on heating, @ 260°C

pH

6.5 (25 °C, 5%, aqueous solution)

transition temp

sintering point 188 °C

solubility

NaOH: 0.05% (warm 5% aquesous)
MEK: partially soluble
benzene: insoluble
dioxane: soluble
ethylene glycol: soluble
hexane: insoluble
methanol: partially soluble

density

1.3 g/mL at 25 °C

bulk density

23 lb/cu.ft (loose)
32 lb/cu.ft (packed)

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General description

Lignin, alkali is a complex, three dimensional polymer that is also known as kraft lignin that has undergone hydrolytic degradation. It is one of the major components of lignocellulosic materials. Lignin is a major product for second generation bioethanol production and is an impurity in the separation of cellulose from wood.

Application

Lignin, alkali can be used as a surface treatment agent for composites of natural fibers with petroleum based resins. It can be used as a biosorbent for potential applications in removing toxic metal ions from wastewater.

Packaging

100, 500 g in poly bottle

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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