Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate

Also known as: BOP, BOP reagent, Castro's reagent, (1H-Benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate, 1H-Benzotriazol-1-yloxytris(dimethylamino)phosphonium Hexafluorophosphate, Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate, tri(dimethylamino)benzotriazol-1-yloxyphosphonium hexafluorophosphate

Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (CAS 56602-33-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H22F6N6OP2 and a molecular weight of 442.28 g/mol. Key properties include a melting point of >130 °C (dec.)(lit.) and a flash point of 138°C. It is classified under GHS with signal word Danger and hazard statements H228, H315 — Causes skin irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 56602-33-6
Jingsj CID: J-1112248-8
Molecular Formula: C₁₂H₂₂F₆N₆OP₂
Molecular Weight: 442.28 g/mol
Category: Organic Compounds
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>130 °C (dec.)(lit.)
Flash Point	138°C
Exact Mass	442.12300
PSA	76.84000
LogP	4.60470
Additional Property	methanol: 25 mg/mL, clear

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger

H228
H315 — Causes skin irritation
H335 — May cause respiratory irritation

Customs & Trade Information

HS Code	29339980

Frequently Asked Questions

What is the CAS number of Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate?

The CAS number of Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate is 56602-33-6.

What are the molecular formula and molecular weight of Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate?

Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate has molecular formula C12H22F6N6OP2 and molecular weight 442.28 g/mol.

Is Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate hazardous?

Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate has GHS signal word Danger and hazard statements H228; H315 — Causes skin irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate?

For Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate, Upstream Products: Hexamethylphosphoramide; Downstream Products: Hexamethylphosphoramide, 1-(Benzoyloxy)-1H-1,2,3-benzotriazole.

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

Last updated: 11/3/2026

How to cite: Jingsj. "Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (CAS 56602-33-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1112248-8 (accessed 2026-11-09).

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