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Bleaching Earth

Pearl H90

specification

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SPECIFICATION

Pearl ®  H90 - Activated Bleaching Earth (CS - 1060) / Fullers Earth

Product description

Pearl ®  H90 is manufacturered by acid activation of ca-bentonite according to CS-1060 (HG/T 2569: 2007) standard, which is a fine, greyish-white powder showing a highly porous inner structure and a multitude of acid sites upon its surface.

Pearl ® H90 is a highly active bleaching earth used in wide scope of applications, which is well suitable for refining vegetable and animal oils and fats, moreover for finishing and/or reproCessing numerous types of mineral oils, praffins and waxes.

Physical/chemical characteristics (typical product data)

Item

Specification

Typical data

Decoloring power

180.00 min.

181.20

Bleachablity

70.00% min.

72.10%

Activity degree

220.00 H+ m.mol/kg min.

243.20 H+ m.mol/kg

Free acid (as H2SO4)

0.50% max.

0.45%

Moisture (2h-110oC)

8.00% max.

7.90%

Particle size (75μm sieve)

90.00% min.

92.10%

Filtration rate

5.00 ml/minute min.

5.70 ml/minute

Bulk density

0.70 - 1.10 g/ml

0.90 g/ml

Loss on Ignition (2h-1000oC)

7.00% max.

6.20%

PH (10% suspension-filtered)

3.00 - 5.00

3.10

Surface area

210.00 m2/g min.

231 m2/g

Oil retention

25.00% max.

19.10%


Particle size distribution

Besides other methods, the particle size distribution of Pearl ® H90 is determined by a sieve analysis of the dry powder. The following average values have been found for the various sieve fractions:

> 150um

%

3

> 100um

%

5

> 63um

%

15

> 45um

%

29

> 25um

%

40


Chemical analysis

Pearl ®  H90 (dried at 110oC for 2 hours) has the following composition (average values)

Item

Percent

Average value

SiO2

%

74.10

Al2O3 

%

12.90

Fe2O3  

%

3.50

CaO   

%

0.30

MgO

%

1.90

Na2O  

%

0.10

K2O

%

0.30

TiO2 

%

0.20

Chloride content

%

0.01

Heavy metals (as Pb)  

%

0.001

Arsenic (As)  

%

0.0001

Loss in ignition 

%

6.20

Total      

%

99.51


Further information and technical advice

All data mentioned in this leaflet are typical for this product and based on average values. Certain deviations can appear due to the proCessing of natural clays as a raw material. In no case are these values to be regarded as specifications. On request, certificates of analysis according to CS-1060 (HG/T 2569: 2007) standard for specified values of single properties can be agreed upon.

All information in this publication is in accordance with our present experience and knowledge. However, since we have no influence on the way in which our products are treated and used, we cannot take any responsibility in this respect. The user must assume responsibility himself for checking whether the products are suitable for the purpose and use proposed by him. All existing proprietary rights, laws and regulations shall be observed.