QUARTZ- ▸ Cement and mortar testing: Standardized graded aggregate for strength-test specimens.
- ▸ Laboratory media: Reference sand for permeability, filtration, and calibration work.
- ▸ Foundry and glass: Silica feedstock for casting molds and glass batch.
- ▸ Abrasives and proppant: Silica for blasting media and as a fracturing proppant.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Ottawa standard sand (CAS 14808-60-7), a natural rounded crystalline quartz (silicon dioxide) silica sand screened to a 20-30 mesh fraction. Graded silica sands of this type serve as standardized reference aggregate for cement and mortar testing and as laboratory media; silica sand more broadly is used in glassmaking, foundry casting, ceramics, abrasives, and as a proppant.
Frequently Asked Questions
What is Ottawa standard 20-30 mesh sand used for?
Ottawa standard sand (CAS 14808-60-7) is a natural rounded crystalline quartz silica screened to a 20-30 mesh fraction. It serves as standardized graded reference aggregate for cement and mortar strength-test specimens and as laboratory media for permeability, filtration, and calibration work.
What does the 20-30 mesh designation mean?
The 20-30 mesh designation specifies the particle-size band: the grains pass a No. 20 sieve and are retained on a No. 30 sieve, giving a narrow, well-graded fraction. This controlled gradation is what makes it suitable as a standardized reference sand. Confirm the exact sieve specification on the CoA.
What is Ottawa standard sand made of?
It is natural rounded crystalline quartz, i.e., silicon dioxide (SiO2), screened from high-purity silica sand deposits. The rounded grain shape and consistent gradation are characteristic of the Ottawa designation used in standardized testing.
What CAS and HS code apply to Ottawa silica sand?
CAS 14808-60-7 (crystalline silica, quartz); HS heading 2505.10 (silica sands and quartz sands). Use these for procurement and customs documentation, and request the SDS for handling data on respirable crystalline silica.
What is the cost of bulk Ottawa standard 20-30 mesh sand and how is it packaged?
Graded reference sand is typically supplied in standardized bag or pail units and quoted by quantity rather than at a single list price. Submit a bulk RFQ with your required quantity and packaging for a current quote, CoA confirming the gradation, and SDS.