21, Aug 2022
Sodium Naphthalene Sulfonate Formaldehyde Condensate(SNF)
Sodium Naphthalene Sulfonate Formaldehyde (SNF) chemical name Sodium naphthalene sulfonate formaldehyde condensates,functions as an emulsion stabilizer, surfactant – dispersing
agent, and a surfactant – hydrotrope in cosmetic products. It is used as a raw material in the
production of admixtures for the construction industry and is one of the basic ingredients for
formulation of chemical admixtures for concrete and mortars. It is defined as the sodium salt of the
product obtained by the condensation polymerization of 2-naphthalene sulfonic acid and
CHEMICAL NAME AND IDENTIFICATION
Chemical Name (IUPAC): Naphthalenesulfonic acid, sodium salt, polymer with formaldehyde
CAS RN: 9008-63-3
Molecular formula: (C10H8O3S.CH2O.Na)x [This substance is a polymer.]
Molecular weight: Unknown
Synonyms: Sodium polynaphthalene sulfonate; naphthalenesulfonic acid, sodium salt, polymer with
formaldehyde; sodium naphthalenesulfonate-formaldehyde copolymer; naphthalenesulfonic acid
sodium salt/formaldehyde polymer; formaldehyde/naphthalenesulfonic acid.
According to Hampshire Chemical Corp. (1995), Sodium Naphthalene Sulfonate Formaldehyde (SNF) is made by reacting naphthalene with sulfuric
acid under conditions of heat and pressure. Formaldehyde and water are then added to produce the
acid polymer under the same conditions of heat and pressure. Caustic is added to the acid polymer
resulting in the final product (CIR, 2003).
Sodium Naphthalene Sulfonate Formaldehyde (SNF) is tan or amber in powdered form and brown in liquid form. It is completely soluble with a
density of 400 – 700 kg/m3. The substance has a percent (%) volatility of 3 % to 7 % water (CIR,
Dispersants for versatile uses. Base for spreader of agricultural chemicals. Dispersants for synthetic rubbers and resins in emulsion polymerization. Dyeing auxiliaries. Dispersing and wetting agents of paper processing aids.
Sodium Naphthalene Sulfonate Formaldehyde (SNF) can be utilized in water-based cleaners such as carpet shampoos, automatic dishwashing detergents, and industrial detergents, as well as in emulsion polymerization, photographic solutions, and agricultural formulations. One grade of naphthalene sulfonate can also be used as a dispersant in many areas, which include textile chemicals, pesticide formulations, cements, emulsion polymerization, pigments and dyestuffs, and leather tanning.