Naphthalene-1,3,5-trisulphonic acid

CAS NO.：6654-64-4
Empirical Formula: C10H8O9S3
Molecular Weight: 368.36
MDL number: MFCD03265508
EINECS: 229-679-3
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-24 14:58:13

What is Naphthalene-1,3,5-trisulphonic acid?

Chemical properties

Naphthalene-1,3,5-trisulfonic acid [6654- 64-4]. C10H8O9S3, Mr 368.34, is extremely soluble in water; the sodium salt crystallizes as the tetrahydrate.

The Uses of Naphthalene-1,3,5-trisulphonic acid

Naphthalene-1,3,5-trisulphonic Acid is a residue found in environmental samples that is a result of the degredation of domestic and industrial use surfactants. The total reaction mixture is nitrated and the resulting 8-nitro derivative is reduced to give a mixture of 1-aminonaphthalene-3,6,8- and 4,6,8-trisulfonic acids.

Definition

ChEBI: Naphthalene-1,3,5-trisulfonic acid is a naphthalenesulfonic acid.

Production Methods

Naphthalene and 65 % oleum are added simultaneously to sulfuric acid monohydrate over a period of 32 h at 30 – 35℃. The mixture is then heated at 50℃ for 1 h, 70℃ for 1 h, and finally 90℃ for 7 h. This procedure minimizes formation of the 1,3,6-isomer, but a purer product may be obtained by using isolated naphthalene-1,5-disulfonic acid as starting material.

Properties of Naphthalene-1,3,5-trisulphonic acid

Density	1.919±0.06 g/cm3(Predicted)
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
pka	-0.89±0.40(Predicted)
color	White
CAS DataBase Reference	6654-64-4(CAS DataBase Reference)
EPA Substance Registry System	1,3,5-Naphthalenetrisulfonic acid (6654-64-4)

Safety information for Naphthalene-1,3,5-trisulphonic acid

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician.