Calcium silicate (CAS 1344-95-2) — Citrus None Note Fragrance Ingredient

ByThe Good Scents
Citrus · Floral

Calcium silicate

CAS 1344-95-2

Origin
synthetic
Note
None
IFRA
Generally safe
Data as of: Apr 2026

What Is Calcium silicate?

Calcium silicate is a synthetic compound primarily used as an anti-caking agent in powdered foods and pharmaceuticals. It prevents clumping by absorbing moisture. In fragrances, it serves as a carrier or stabilizer rather than an aromatic ingredient. While odorless itself, calcium silicate plays a supporting role in product formulations where texture and flow properties matter.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ FDA-approved food additive
✓ Non-reactive and inert
CAS
1344-95-2
Formula
Mixture
MW
Variable
Odor Family
Citrus · Floral
Layer 1 · Enthusiast

What Does Calcium silicate Smell Like?

Calcium silicate is completely odorless and does not contribute any aromatic characteristics to fragrances. As an inorganic compound, it lacks the volatile organic molecules that create scent. Its role in perfumery is purely functional – acting as a carrier for other aromatic materials or helping to control the physical properties of powdered fragrance formulations without altering their olfactory profile.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

Calcium silicate is an inorganic compound with the chemical formula Ca2SiO4. It is synthesized through high-temperature reactions between calcium oxide and silicon dioxide. The material exists in several crystalline forms (α, β, and γ) with different thermodynamic stabilities. Industrial production typically yields a porous, amorphous powder with high surface area, making it effective for moisture absorption and as a flow agent in powdered products.

Physical & Chemical Properties

AppearanceWhite powder
Melting Point1540 °C

Perfumer Guide

Note Position
None
Volatility
Non-volatile
Blending
N/A
ApplicationTypical %RangeNotes
Powdered Fragrances1-3%Up to 5%Anti-caking agent
Solid Perfumes0.5-2%Up to 3%Texture modifier

Classic Accords

Tip: Use as a free-flow agent in powdered fragrance blends at 1-3% concentration.

Alternatives & Comparisons

1
Magnesium silicate CAS 1343-88-0

Similar anti-caking properties with slightly higher oil absorption capacity.

2
Silicon dioxide CAS 7631-86-9

Alternative flow agent with lower moisture absorption capability.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. Consult current IFRA Standards Library before formulating.

IFRA Status

No IFRA restrictions – not an aromatic material.

RIFM Assessment

Not evaluated by RIFM as it is not a fragrance material.

Sustainability

Calcium silicate is synthesized from abundant mineral sources (limestone and silica) through energy-intensive processes. While not biodegradable, it is chemically inert and poses minimal environmental risk. Synthetic production allows for consistent quality control compared to mined alternatives. Some manufacturers offer food-grade material from sustainable calcium sources.

Explore Calcium silicate

Browse essential oils and aroma compounds.

Browse on iHerb →

Affiliate disclosure: we may earn a small commission at no extra cost to you.

References

  1. FDA. (2023). Code of Federal Regulations Title 21. 21CFR172.410
  2. European Food Safety Authority. (2011). Scientific Opinion on calcium silicate. EFSA Journal. EFSA Journal 2011

Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.

Report a data error

Similar Posts