3-Aminopropyltriethoxysilane

Also known as: APTES, γ-Aminopropyltriethoxysilane, KH-550, A-1100, AMEO, Z-6011, KBM-903, 3-Triethoxysilylpropylamine, 1-Propanamine, 3-(triethoxysilyl)-

3-Aminopropyltriethoxysilane (CAS 919-30-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H23NO3Si and a molecular weight of 221.369 g/mol. Key properties include a melting point of -70 °C, a boiling point of 222.1±13.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 104.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 919-30-2
Jingsj CID: J-1102283-7
Molecular Formula: C₉H₂₃NO₃Si
Molecular Weight: 221.369 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	-70 °C
Boiling Point	222.1±13.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	104.4±0.0 °C
Exact Mass	221.144714
PSA	53.71000
LogP	1.37
Vapor Pressure	0.1±0.4 mmHg at 25°C
Refractive Index	1.433
Additional Property	REACTS

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H302 — Harmful if swallowed
H314 — Causes severe skin burns and eye damage
H317 — May cause an allergic skin reaction

Activity & Biological Data

Additional Information	[1]. Saengdee P, et al. Optimization of 3-aminopropyltriethoxysilane functionalization on silicon nitride surface for biomolecule immobilization. Talanta. 2020;207:120305.

Customs & Trade Information

HS Code	29310095

Frequently Asked Questions

What is the CAS number of 3-Aminopropyltriethoxysilane?

The CAS number of 3-Aminopropyltriethoxysilane is 919-30-2.

What are the molecular formula and molecular weight of 3-Aminopropyltriethoxysilane?

3-Aminopropyltriethoxysilane has molecular formula C9H23NO3Si and molecular weight 221.369 g/mol.

Is 3-Aminopropyltriethoxysilane hazardous?

3-Aminopropyltriethoxysilane has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.

What are the upstream and downstream products of 3-Aminopropyltriethoxysilane?

For 3-Aminopropyltriethoxysilane, Upstream Products: (3-Chloropropyl)triethoxysilane, Triethoxysilane, 1,5-cyclooctadiene; Downstream Products: 3-(4-Semicarbazido)propyltriethoxysilane, N-Octadecyl-N'-[3-(triethoxysilyl)propyl]urea, p-Anisidine.

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. "3-Aminopropyltriethoxysilane (CAS 919-30-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1102283-7 (accessed 2026-11-06).

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