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2-Chloro-2-methylpropane-d9

Also known as: TERT-BUTYL-D9 CHLORIDE, TERT-BUTYL CHLORIDE (D9), 2-CHLORO-2-METHYLPROPANE-D9, 99 ATOM % D, 2-Chloro-2-(2H3)methyl(1,1,1,3,3,3-2H6)propane, 2-chloro-1,1,1,3,3,3-hexadeuterio-2-(trideuteriomethyl)propane, (2H9)-tert-Butyl chloride, perdeutero-tert-butyl chloride, t-Butyl chloride-d9, tert-butyl-d9 chloride, Propane-1,1,1,3,3,3-d6, 2-chloro-2-(methyl-d3)-, EINECS 213-041-6, MFCD00055681

2-Chloro-2-methylpropane-d9 (CAS 918-20-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4ClD9 and a molecular weight of 101.62300 g/mol. Key properties include a melting point of -25ºC(lit.), a boiling point of 51-52ºC(lit.), a density of 0.933 g/mL at 25ºC and a flash point of 18.3 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
918-20-7
Jingsj CID
J-34893-6
Molecular Formula
C4ClD9
Molecular Weight
101.62300 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/2/2026
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Physicochemical Properties

Melting Point-25ºC(lit.)
Boiling Point51-52ºC(lit.)
Density0.933 g/mL at 25ºC
Flash Point18.3 °C
Exact Mass101.09600
LogP2.02370
Refractive Indexn20/D 1.3819(lit.)

GHS Safety & Compliance

FlammableSignal word: Danger
  • H225 — Highly flammable liquid and vapour

Activity & Biological Data

Additional Information[1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.

Frequently Asked Questions

What is the CAS number of 2-Chloro-2-methylpropane-d9?

The CAS number of 2-Chloro-2-methylpropane-d9 is 918-20-7.

What are the molecular formula and molecular weight of 2-Chloro-2-methylpropane-d9?

2-Chloro-2-methylpropane-d9 has molecular formula C4ClD9 and molecular weight 101.62300 g/mol.

Is 2-Chloro-2-methylpropane-d9 hazardous?

2-Chloro-2-methylpropane-d9 has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.

What are the upstream and downstream products of 2-Chloro-2-methylpropane-d9?

For 2-Chloro-2-methylpropane-d9, Upstream Products: tert-Butyl-d9 alcohol, tert-Butanol-d10; Downstream Products: 2-methylpropane, [2-(2H3)Methyl(2H6)-2-propanyl](2H5)benzene, Pivalic acid-d9.

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

Last updated:

How to cite: Jingsj. "2-Chloro-2-methylpropane-d9 (CAS 918-20-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34893-6 (accessed 2026-11-09).

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