2,3,3-trimethylpentane

Also known as: 2,2-THIODIACETIC ACID, 2,3,3-Trimethyl-pentan, 2,3,3-trimethyl-pentane, 4-01-00-00445, C2H5C(CH3)2CH(CH3)2, EINECS 209-207-2, Pentane, 2,3,3-trimethyl-, Pentane,2,3,3-trimethyl, Pentane,3,3-trimethyl, UNII-J62AAG7FN0

2,3,3-trimethylpentane (CAS 560-21-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H18 and a molecular weight of 114.229 g/mol. Key properties include a melting point of -100.93°C, a boiling point of 114.9±7.0 °C at 760 mmHg, a density of 0.7±0.1 g/cm3 and a flash point of 11.4±11.7 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 560-21-4
Jingsj CID: J-21198-3
Molecular Formula: C₈H₁₈
Molecular Weight: 114.229 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-100.93°C
Boiling Point	114.9±7.0 °C at 760 mmHg
Density	0.7±0.1 g/cm3
Flash Point	11.4±11.7 °C
Exact Mass	114.140854
LogP	4.46
Vapor Pressure	23.1±0.1 mmHg at 25°C
Refractive Index	1.400
Storage Conditions	room temp

GHS Safety & Compliance

Flammable / Irritant / Health Hazard / Environmental HazardSignal word: Danger

H225 — Highly flammable liquid and vapour
H304
H315 — Causes skin irritation
H336 — May cause drowsiness or dizziness
H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of 2,3,3-trimethylpentane?

The CAS number of 2,3,3-trimethylpentane is 560-21-4.

What are the molecular formula and molecular weight of 2,3,3-trimethylpentane?

2,3,3-trimethylpentane has molecular formula C8H18 and molecular weight 114.229 g/mol.

Is 2,3,3-trimethylpentane hazardous?

2,3,3-trimethylpentane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H304; H315 — Causes skin irritation.

What are the upstream and downstream products of 2,3,3-trimethylpentane?

For 2,3,3-trimethylpentane, Upstream Products: 1-Butene, Isobutylene, 2-butene; Downstream Products: 2,3-Dimethylpentane, 2,2,3-trimethylbutane, m-Xylene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2,3,3-trimethylpentane (CAS 560-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21198-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.