Isopropylamine (CAS 75-31-0) — Top Note Fragrance Ingredient

ByThe Good Scents



terpenic

Isopropylamine

CAS 75-31-0

Note
top
Volatility
high
MW
59.11
Data as of: Jun 2026

What Is Isopropylamine?

Isopropylamine (CAS 75-31-0) is an aroma chemical used as a fragrance and flavour ingredient. Its odour is described as bakery, sweet and fruit, placing it within the terpenic family as a top note with high volatility. With a molecular weight of 59.11 (formula C3H9N), it is handled by perfumers as a building block for compositions where a bakery character is desired. The data below is compiled from public chemical and regulatory sources.

Safety Profile

USE WITH AWARENESS

Generally safeUse with awarenessProfessional use
CAS
75-31-0
Formula
C3H9N
MW
59.11
InChIKey
JJWLVOIRVHMVIS-UHFFFAOYSA-N
Isopropylamine 2D structure

Isopropylamine
C3H9N
Layer 1 · Enthusiast

What Does Isopropylamine Smell Like?

The odour profile of Isopropylamine is reported as bakery, sweet, fruit, fish, garlic, spices, cold, sour, burnt, acid, warm, musky, sweaty, ammonia/urinous, decayed, wood, grass, flower, chemical, edible. The dominant facet is its bakery character, with the remaining notes adding nuance and complexity. As a top note it contributes to the opening of a fragrance. Perceived intensity and exact character depend on concentration, the carrier and the surrounding accord.

Scent Profile

Profile derived from public odour-descriptor data; relative, not absolute.

Layer 2

Chemistry & Properties

The Chemistry

Isopropylamine has the molecular formula C3H9N and a molecular weight of 59.11 g/mol. Its canonical SMILES representation is CC(C)N. Its reported log P (XLogP) of 0.26 indicates a moderately polar molecule, which informs how it partitions in a formula. Physical constants below are drawn from PubChem and EPA CompTox public datasets.

Physical & Chemical Properties

Molecular Weight 59.11 g/mol
Boiling Point 32.00 °C
Melting Point -97.04 °C
Flash Point -13.60 °C
Density 0.69 g/cm³
Vapor Pressure 575.4 mmHg
Water Solubility 16.94 g/L
XLogP 0.26

Perfumer Guide

Note Position
Top
Volatility
High
Primary Odour
Bakery

Alternatives & Comparisons

Ingredients occupying a similar odour space — useful as substitutes or companions when Isopropylamine is unavailable or restricted.

1
2-Acetylthiophene CAS 88-15-3

Shares bakery, sweet, fruit character — a candidate substitute or companion in the same odour space.

2
1,6-Hexanedithiol CAS 1191-43-1

Shares bakery, sweet, fruit character — a candidate substitute or companion in the same odour space.

3
(1E)-2-[6-[[amino-[(E)-[amino-(4-chloroanilino)methylidene]amino]methylidene]amino]hexyl]-1-[amino-(4-chloroanilino)methylidene]guanidine;bis((2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanoic acid) CAS 18472-51-0

Shares acid, ammonia/urinous, bakery character — a candidate substitute or companion in the same odour space.

Layer 3

Safety & Regulatory

⚠ Regulatory Disclaimer

General reference only. IFRA, REACH and EU Cosmetics Regulation standards update periodically. Consult the current IFRA Standards Library before formulating. Not legal or regulatory advice.

IFRA Status

No IFRA restriction recorded in the data set. This is not a guarantee of unrestricted status — always confirm against the current IFRA Standards Library.

GHS Classification

Signal word: Danger

H224H315H319H335
Formulating with Isopropylamine?

Open Isopropylamine in Fragrance Studio (Pro) for the calibrated vapour-pressure curve, the modelled odour-threshold estimate, and the substitute-matching engine across 2,900+ aromachemicals.

Open in Fragrance Studio →

Free · Web-based · No install required

References & Sources

  1. PubChem Compound Summary (NIH) — search by InChIKey
  2. EPA CompTox Chemicals Dashboard — physicochemical & fate data
  3. IFRA Standards Library (49th / 51st Amendment)
Sources: PubChem (NIH) · EPA CompTox · IFRA Standards Library · public GHS classification. Odour descriptors are original editorial summaries of public profiles, not reproduced from any single proprietary source.

Data: PubChem (NIH), EPA CompTox, IFRA. Last reviewed: Jun 2026.

Report a data error

Similar Posts