Sodium dibutylnaphthalenesulphonate
Time: 2012-09-29 16:36:36

Sodium dibutylnaphthalenesulphonate

Synonyms

Sodium dibutylnaphthalene sulfonate;

Sodium dibutylnaphthylsulfonate;

Sodium dibutylnapthalenesulfonate;

Dibutyl-naphthalene sulfonate, sodium salt;

Dibutylnaphthalenesulfonic acid sodium salt;

Naphthalenesulfonic Acid, Dibutyl-, Sodium Salt;

Category

Anionic Surfactant

> Sulfonate

>> Aryl Sulfonate

>>> Naphthyl Sulfonate

>>>> Linear Alkylnaphthyl Sulfonate

Chemical Numbering System

CASRN25417-20-3

EINECS246-960-6

Molecular Formula & Molecular Weight

Molecular Formula: C18H23NaO3S; C18H24O3S.Na

Molecular Weight: 342.43

Structure

Properties

Appearance    (1), light yellow transparent liquid; (2), beige solid.

Solubility    soluble in water.

Stability    stable.

Risk    Solid form: flammable material; irritation, moderate irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.

GHS (Rev.7) label:  

Liquid form: irritation, moderate irritation to skin, eye.

GHS (Rev.7) label: 

Animal Toxicity

Table 1 Animal toxicity values

guinea pig oral LD50

1500mg/kg[1]

guinea pig subcutaneous LDLo

800mg/kg[1]

mouse oral LD50

1134mg/kg[1]

rat oral LD50

1250mg/kg[1]

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent permeating, wetting, dispersing, emulsifying abilities. When system contains a small amount of sodium chloride, can be significantly enhanced permeating abilities. Certain resistance to inorganic electrolytes.

Synthesis

Naphthalene, butanol and concentrated sulfuric acid react through the sulfonation condensation reaction, then sodium hydroxide or sodium carbonate neutralizes, finally obtain product.

Quality Standards & Test Methods

1, Physical and chemical indexes

Item

Physical and chemical indexes

Liquid

Solid

Actives, %, ≥

25.0 - 50.0

60.0 - 65.0

pH (25°C, 1%)

7.0 - 8.5

7.0 - 8.5

Test Methods

(1), Actives

GB/T 5173 Surface active agents and detergents-Determination of anionic-active matter by direct two-phase titration procedure

ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure

(2), pH

GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method

ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method

2, Hazardous substances indexes

Item

Hazardous substances indexes

Liquid

Solid

Heavy metals (as Pb), mg/Kg, ≤

20

20

As, mg/Kg, ≤

3

3

Test Methods

(1), Heavy metals (as Pb)

Safety and Technical Standards for Cosmetics (2015 Edition)

GB/T 30799 The test method of food detergents - Determination of heavy metals

(2), As

Safety and Technical Standards for Cosmetics (2015 Edition)

GB/T 30797 The test method of food detergents - Determination of total arsenic

3, Product standards

(1), Chinese standards

(1a), HG/T 3513 Penetrating Agent BX

4, Further explanation

(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.

Major Uses

1, Typical applications

Use as penetrating agent, wetting agent.

Use as emulsifying agent, dispersing agent.

2, Textile

Use as penetrating agent, wetting agent.

Widely used, but there are shortcomings that make textiles feel hard and dye bright decreases. Have been gradually replaced by other penetrating agent.

3, Rubber

Use as emulsifying agent, softening agent.

4, Paper

Use as wetting agent.

5, Agriculture

Synergist in pesticides, fertilizer.

Manufacturers

 

References

[1]: ChemIDplus. 25417-20-3, Sodium dibutylnapthalenesulfonate

Update: 20131025(1); 20170330(2);