Hubercarb® Q325

Hubercarb® Q325 is a medium fine ground calcium carbonate produced at Huber’s Quincy, Illinois plant which is known for its natural uniformity producing consistent purity and brightness. Carefully controlled particle distribution allows Q325 to be used a wide range of applications including paints, coatings, adhesives, caulks, and concrete building products. Acid solubility above 95% makes Q325 ideal for use in oilfield drilling fluids.

Brand: Hubercarb (51 products)

Functions: Filler

Chemical Family: Calcium Salts, Carbonates, Kaolins

Compatible Polymers & Resins: Cement, Polyolefins, Silicones

Particle Size: 13.0 - 13.0 microns

Oil Absorption: 14.0 - 14.0 g/100 g

Technical Data Sheet Safety Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family: Calcium Salts,
Carbonates,
Kaolins
Chemical Name: Calcium Carbonate
CASE Ingredients Functions: Filler
CAS No.: 471-34-1
EC No.: 207-439-9
Technologies: CASE Ingredients
Product Families: CASE Ingredients — Additives
Fillers & Extenders

Applications & Uses

Markets: Adhesives & Sealants,
Building & Construction
Applications: Adhesives & Sealants — Building & Construction
Sealants & Caulks
Building & Construction — Building Materials
Sealants & Caulks
Compatible Polymers & Resins: Cement,
Polyolefins,
Silicones

Properties

Physical Form

Chemical Properties


	Value	Units	Test Method / Conditions
Calcium Carbonate	96.5	%	-
Magnesium Carbonate	2.0	%	-
Silica and Silicates	1.0	%	-
Other	0.5	%	-

Physical Properties


	Value	Units	Test Method / Conditions
Acid Solubility (in HCl)	98.5 - 99	%	-
Brightness (Hunter reflectance)	86.0	%	-
Compacted Bulk Density	80	lb/ft³	ASTM C110
Loose Bulk Density	50	lb/ft³	ASTM C110
Mesh size (-325) (45μm)	99.5	%	-
Median Particle Size (Cilas®)	13.0	μ	-
OIl Absorption	14.0	lbs oil / 100lbs	ASTM D281
Moisture	0.1	%	ASTM D280
Water Demand	40.0	mL/100 gms	-

Typical Properties


	Value	Units	Test Method / Conditions
Specific Gravity	2.7	-	ASTM D153
Color	White	-	-
pH (Saturated Solution)	9.4	-	ASTM D1208

Mineral Properties


	Value	Units	Test Method / Conditions
Hardness (Mohs)	3	-	-
Linear Expansion Coefficient	4.3 x 10^-6	°C	-
Solubility (H₂O, 100°C)	0.0035	g/100ml	-
Weight per Gallon (s.g. x 8.345)	22.6	lbs	-
Particle Shape (Microscope)	Irregular, uniaxial	-	-
Refractive Index (Hand. Of Chem. & Phy)	1.6	-	-
Alkalinity (as NaOH)	0.4	mg/gm	ASTM D1208