Sodium Carboxymethyl starch

Property and Use: The product is white or yellow powder and made by etherification of starch.
Industrial standard adopted:SY/T5353-91
Property and Use: The product is white or yellow powder and made by etherification of starch.It is maily used in drilling fluid loss control agent during drilling operation.It has been proven from laboratory and field test that it is salt resistant and can be properly used in saturaed brine.It has been widely used for its effectof fluid loss control and the competitive price

Item
Index
Carboxymethyl starch
First Class Product
Second Class Product
4%Brine
Saturatedbrine
4%Brine
Saturatedbrine
Base fluid
Filration rate,ml
90±10
100±10
90±10
100±10
Surface viscosity,Mpa·s
6.0
10.0
6.0
10.0
PH
8.0±1.0
8.0±1.0
8.0±1.0
8.0±1.0
Charge of modified starch(g/L) ,in case of filtration rate of ICM
9.0
10.0
15.0
15.0
15.0
Surface viscosity after being processed wit modined starch(MPa·s
9.0
10.0
15.0
15.0
15.0

Item
Index
Pre-colloidization Starch
First Class Product
Second Class Product
Moistrure content,%
10.0
12.0
15.0
Nacl,%
6.0
7.0
12.0
Substituting degree(D.S)

.0.20
0.15
PH

8.0±1.0
9.0±1.0
Fineness(residue on sieve)
0.25mesh,%

20

0.42mesh,%
10

20
Purity,%
85