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4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt

Also known as: Lucifer Yellow anhydride dipotassium salt, 4-Amino-3,6-disulfonaphthalic anhydride dipotassium salt, 6-Amino-1,3-dioxo-1H,3H-benzo[de]isochromene-5,8-disulfonic acid dipotassium salt, Dipotassium 4-amino-3,6-disulfonaphthalic anhydride, MFCD00012400

4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt (CAS 79539-35-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H5K2NO9S2 and a molecular weight of 449.49600 g/mol. Key property: a melting point of >300ºC(lit.). It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
79539-35-8
Jingsj CID
J-16380-4
Molecular Formula
C12H5K2NO9S2
Molecular Weight
449.49600 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point>300ºC(lit.)
Exact Mass448.86800
PSA200.55000
LogP2.28360

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. Stewart W W, et al. Lucifer dyes as biological tracers: a review. Cellular and molecular control of direct cell interactions, 1985: 297-312.

Frequently Asked Questions

What is the CAS number of 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt?

The CAS number of 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt is 79539-35-8.

What are the molecular formula and molecular weight of 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt?

4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt has molecular formula C12H5K2NO9S2 and molecular weight 449.49600 g/mol.

Is 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt hazardous?

4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt?

For 4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt, Upstream Products: Brilliant sulfaflavine; Downstream Products: Lucifer Yellow CH dipotassium salt, Lucifer Yellow VS dilithium salt.

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

Last updated:

How to cite: Jingsj. "4-Amino-3,6-disulfo-1,8-naphthalic anhydride dipotassium salt (CAS 79539-35-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16380-4 (accessed 2026-11-09).

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