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tert-Butyl diazoacetate

Also known as: tert-Butyl 2-diazoacetate, (tert-Butoxycarbonyl)diazomethane, 2-Diazoacetic acid tert-butyl ester, 1,1-Dimethylethyldiazoacetate, 2-diazonio-1-[(2-methylpropan-2-yl)oxy]ethenolate, Acetic acid, 2-diazo-, 1,1-dimethylethyl ester, Diazoacetic acid 1,1-dimethylethyl ester, t-BuO2CCHN2, tert-Butyl diazoacetate solution, MFCD01318409

tert-Butyl diazoacetate (CAS 35059-50-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H10N2O2 and a molecular weight of 142.15600 g/mol. Key properties include a boiling point of 51-53ºC12 mm Hg(lit.), a density of 1.026 g/mL at 25ºC(lit.) and a flash point of 43.3 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
35059-50-8
Jingsj CID
J-1055848-2
Molecular Formula
C6H10N2O2
Molecular Weight
142.15600 g/mol
Category
Organic Acids
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point51-53ºC12 mm Hg(lit.)
Density1.026 g/mL at 25ºC(lit.)
Flash Point43.3 °C
Exact Mass142.07400
PSA63.69000
LogP0.70976
Refractive Indexn20/D 1.453(lit.)
Storage Conditions2-8°C

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation
  • H350 — May cause cancer
  • H361 — Suspected of damaging fertility or the unborn child

Customs & Trade Information

HS Code2927000090
Summary2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of tert-Butyl diazoacetate?

The CAS number of tert-Butyl diazoacetate is 35059-50-8.

What are the molecular formula and molecular weight of tert-Butyl diazoacetate?

tert-Butyl diazoacetate has molecular formula C6H10N2O2 and molecular weight 142.15600 g/mol.

Is tert-Butyl diazoacetate hazardous?

tert-Butyl diazoacetate has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H315 — Causes skin irritation.

What are the upstream and downstream products of tert-Butyl diazoacetate?

For tert-Butyl diazoacetate, Upstream Products: tert-Butyl acetoacetate, Glycine tert-butyl ester hydrochloride, (E)-2-(2-Tosylhydrazono)acetyl chloride; Downstream Products: tert-Butyl 2-hydroxyacetate, 5,5-Dimethyldihydrofuran-2(3H)-one.

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

Last updated:

How to cite: Jingsj. "tert-Butyl diazoacetate (CAS 35059-50-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1055848-2 (accessed 2026-11-09).

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