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Portafill® H 5 F12.0

CASE Ingredients Features
Good Brightness
Chemical Name
Huntite

Portafill® H 5 F12.0 is produced from a carefully selected, naturally occurring, platy, sedimentary mineral consisting predominantly of partially hydrated magnesium-calcium carbonate. The standardized quality of Portafill® H 5 is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of raw material and product is closely monitored, and particle size is kept within a narrow variation. Particle shape, fineness, and high brightness make Portafill® H 5 a very efficient extender for TiO2 in paint, paper, and board applications. Its platy particle shape and very fine particle size make Portafill® H 5 an effective rheology modifier in aqueous suspensions and other fluids. It is therefore valued for applications in a/o adhesives, sealants, and plastisols.

Properties

Physical Form
Powder

Identification

CASE Ingredients Functions
ExtenderRheology Modifier

Product families

Applications

Industrial — Paper & Pulp
  • Coated Paper & Paperboard

Product Families

CASE Ingredients — Additives
  • Fillers & Extenders
  • Rheology Modifiers & Stabilizers
Industrial Additives & Materials — Paper & Pulp Chemicals
  • Finishing Additives & Treatments

Other characteristics

Brand
Dar-Tech Portafill
Functions
Extender, Rheology Modifier
Particle Size
0.56 microns, 3.0 microns
Markets
Industrial
Technology
  • CASE Ingredients
  • Industrial Additives & Materials
Chemical Inventories
  • DSL (Canada)
  • TSCA (USA)
Country Availability
  • Canada
  • USA
Certifications and Compliance

Clean Water Act (CWA) Certified; Comprehensive Environmental Response Compensations & Liability Act (CERCLA); ISO 9001

Industrial Additives End Use
Paperboard
Adhesives And Sealants
  • Plastisol Adhesive
  • Plastisol Sealant

Technical data

Table 1 of 3

11 rows
CharacteristicValueUnitMethod
Specific Surface Area18.0m²/gBET
Oil Absorption57.0g/100gISO 787/5
Brightness (L*)97.4—ISO 2470
Color (a)0.04—ISO 2470
Color (b)1.0—ISO 2470
Moisture Content0.6%ISO 787/2
pH10.0—ISO 787/9
Density2.7g/cm³—
Loose Apparent Density0.3g/cm³AP method
Hardness2 - 3—Mohs’ scale
Refractive Index1.61 – 1.64——

Table 2 of 3

6 rows
CharacteristicValueUnitMethod
Percentage Passing on Individual Sieve (45 μm)0.01%Alpine sieve Sedigraph
Particle Size (D10)0.41μmSedigraph D 5000
Particle Size (D50)0.56μmSedigraph D 5000
Particle Size (D50)3.0μmLaser diffraction
Particle Size (D90)0.76μmSedigraph D 5000
Particle Size (D97)0.9μmSedigraph D 5000

Table 3 of 3

6 rows
CharacteristicValueUnitMethod
Magnesium Oxide (MgO)32.9wt%XRF
Calcium Oxide (CaO)14.7wt%XRF
Silicon Dioxide0.7wt%XRF
Ferric Oxide (Fe₂O₃)0.03wt%XRF
Fatty acid2.0wt%Titrimetric
Loss on Ignition (1000°C, 1 hour)51.0wt%XRF

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