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Natural Kaolin (China Clay)

Natural Kaolin (China Clay)

CAS Number: 1332-58-7

Molecular Formula: Al2H4O9Si2

Purity: 85–99% Kaolinite (grade dependent)

H2Al2Si2O8 H2O

About Natural Kaolin (China Clay)

Natural Kaolin (China Clay), CAS 1332-58-7, serves as a critical functional filler and opacifier in the American architectural coatings and paperboard industries, where domestic manufacturers increasingly rely on a certified bulk chemical supplier to navigate domestic supply chain constraints and rising raw material co...

Variants

Alumino Silicate

CAS: 1332-58-7

Natural Kaolin (China Clay) Specifications

CAS Number
1332-58-7
Molecular Formula
Al2H4O9Si2
Molecular Weight
258.16 g/mol (Kaolinite)
IUPAC Name
dialuminum;trioxido(trioxidosilyloxy)silane;dihydrate
Canonical SMILES
O.O.[O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-].[Al+3].[Al+3]
InChI Key
KGOIAFZMMLWXLM-UHFFFAOYSA-N
InChI
InChI=1S/2Al.O7Si2.2H2O/c;;1-8(2,3)7-9(4,5)6;;/h;;;2*1H2/q2*+3;-6;;
Molecular Weight
258.16 g/mol (Kaolinite)
Appearance
White to off-white fine powder; may appear cream, light gray, or buff depending on mineral impurities
Odor
Odorless
Physical State
Solid (Powder)
Purity (Commercial Grades)
85–99% Kaolinite (grade dependent)
Density (Specific Gravity)
2.58–2.63 g/cm³
Bulk Density
0.3–0.8 g/cm³ (depending on processing)
Melting Point
>1,700°C (decomposes before melting)
GHS Classification
Not classified as hazardous under GHS for normal industrial use. Airborne respirable dust generated during handling may present an occupational hazard.
Transport Classification
Not classified as dangerous goods for transport (ADR/RID, IMDG, IATA)

Ceramic Manufacturing

An essential raw material used in the production of porcelain, whiteware, sanitary ware, and tiles to improve plasticity and whiteness

Paper Coating and Filling

A functional additive used to enhance the gloss, smoothness, brightness, and opacity of paper products

Paint and Coating Extender

A natural opacifier and partial replacement for titanium dioxide used as a filler and flattening agent in decorative and industrial paints

Rubber and Plastic Reinforcement

A reinforcing filler used to improve mechanical strength, durability, and resistance to abrasion in automotive parts, tires, and polymer composites

Natural Kaolin (China Clay) FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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