Micron
Diameter

U.S.
Series
No.

Percent
Finer
Than*

Fineness of Dispersion

44µ
30µ
20µ
15µ
10µ

325
475
625
950
1250

99-100
99
94
92
69

Hegman Fineness 3-4

Average particle Size (Range) 7-14µ

* These values are averages

Platelets

Cluster 70X

General Information
1250 Novacite® is a premium 325 mesh product. Normally, it is 100% finer than 44µ. This outstanding product has been preferred for over 25 years in thermoset molding compounds. We would not hesitate to recommend 1250 Novacite® for almost any application in the polymer field in its range of fineness.

Properties (Typical)

Specific Gravity

2.65

Index of Refraction

1.550

Color (Dry)

White

Color (Wet)

Grey-Tan

Oil Adsorption
(Spatula)

17-20%

Particle Shape

1-7 microns

Platey

Particle Shape

over 7 microns

Clusters

pH

6.0 -7.8

Acid Number

0-(-0-18)

Thermal Stability
(in its phase)

Absolute Zero
to 573°C.

Specific Heat
(Mean between 0-200°C)

.192 Cal/g/C°

Surface Modification

Very Receptive

Hardness

7 Mohs Scale

Moisture (Finished Product)
110°C 3 Hours

0.0%

Loss on ignition
(Typical) 1000°C 30 Minutes

0.20%

Loose Packed

50 Lbs/Ft ³

Dense Packed

80 Lbs/Ft ³

Chemical Analysis (Typical)

SiO₂

99.490%

Fe₂O₃

.039

Al₂O₃

.102

TiO₂

.015

CaO

.014

MgO

.021

Information contained herein is intended only for evaluation by technically skilled persons, and is to be used by such persons at their own discretion and risk. Such information is believed to be reliable, but Malvern Minerals Company assumes no responsibility for results obtained or damages resulting from such use. Typical properties and chemical analyses are intended as examples and are not to be considered as substitutes for actual analyses in those situations where properties and chemical compositions are critical factors. Sales of Malvern Minerals Company products shall be independent and subject exclusively to the terms and conditions set forth in Malvern's order acknowledgement.