Calcium chloride, dihydrate (CAS 10035-04-08) — Citrus None Note Fragrance Ingredient

ByThe Good Scents
Citrus · Floral

Calcium chloride, dihydrate

CAS 10035-04-08

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

What Is Calcium chloride, dihydrate?

Calcium chloride dihydrate is a salt commonly used in food preservation, de-icing roads, and as a drying agent in laboratories. It’s found in packaged foods, sports drinks, and industrial applications. While not a fragrance ingredient, it plays a role in some cosmetic formulations for its moisture-absorbing properties.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ GRAS (Generally Recognized As Safe) by FDA
⚠ May cause irritation in concentrated forms
CAS
10035-04-08
Formula
Mixture
MW
Variable
Odor Family
Citrus · Floral
Layer 1 · Enthusiast

What Does Calcium chloride, dihydrate Smell Like?

Calcium chloride dihydrate is odorless in its pure form. As an inorganic salt, it lacks the volatile organic compounds that create fragrance. In cosmetic applications, it serves functional purposes like moisture control rather than olfactory contribution.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

Calcium chloride dihydrate (CaCl2·2H2O) is an inorganic salt that forms colorless, hygroscopic crystals. It’s produced industrially through the reaction of limestone with hydrochloric acid or as a byproduct of the Solvay process. The dihydrate form is particularly stable at room temperature and readily absorbs moisture from the air, making it valuable as a desiccant.

Physical & Chemical Properties

Melting Point176 °C (dehydrates)
Solubility74.5 g/100 mL water (20°C)
AppearanceWhite crystalline solid

Perfumer Guide

Note Position
None
Volatility
Non-volatile
Blending
Not applicable
ApplicationTypical %RangeNotes
Cosmetics0.5-2%Up to 5%Moisture control agent
Food0.1-0.3%Up to 1%Firming agent

Classic Accords

Tip: Use as a desiccant in fragrance-free moisture-sensitive formulations.

Alternatives & Comparisons

1
Magnesium chloride CAS 7786-30-3

Similar hygroscopic properties with lower heat of dissolution. Used in food and cosmetic applications where less exothermic reaction is preferred.

2
Silica gel CAS 63231-67-4

Non-reactive desiccant suitable for packaging applications where salt contamination must be avoided.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

Not regulated by IFRA as it’s not a fragrance material.

GHS Classification

H319 Eye irritation

RIFM Assessment

Not evaluated by RIFM as it’s not a fragrance material.

Sustainability

Calcium chloride dihydrate is synthetically produced from abundant minerals. Industrial production is energy-intensive but creates no significant environmental hazards. As a byproduct of other chemical processes, its use contributes to industrial symbiosis by utilizing waste streams.

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References

  1. PubChem. Calcium chloride dihydrate. PubChem
  2. FDA. (2021). Code of Federal Regulations Title 21. FDA CFR

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

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