Sodium Polynaphthalenesulfonate
Time: 2012-09-29 16:51:15
Sodium Polynaphthalenesulfonate
Synonyms
Naphthalenesulfonic acid formaldehyde polymer sodium salt;
Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt;
Category
Anionic Surfactant
>> Sulfonate
>> Aryl Sulfonate
>> Naphthyl Sulfonate
>> Naphthalenesulfonic acid - Formaldehyde Polymer
Chemical Numbering System
CASRN9084-06-4
EINECSN/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Schematic formula:
Properties
Appearance    (1), brown or dark brown powder.
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.6) label:  
Animal Toxicity
Table 1 Animal toxicity values
rat oral LD50
3800mg/kg[1]
rat intraperitoneal LD50
460mg/kg[1]
rat intravenous LD50
435mg/kg[1]
mouse oral LD50
3400mg/kg[1]
mouse intraperitoneal LD50
315mg/kg[1]
mouse subcutaneous LD50
1275mg/kg[1]
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    to a certain extent, biodegradable.
Characteristics    excellent dispersing, emulsifying, wetting abilities. Certain resistance to inorganic electrolytes.
Synthesis
Naphthalenesulfonic acid and formaldehyde react through the polycondensation 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
Solid
Actives, %, ≥
85.0
pH (25°C, 1%)
7.0 - 9.5
Test Methods
(1), Actives
 
(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
Solid
Heavy metals (as Pb), mg/Kg, ≤
20
As, mg/Kg, ≤
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 2562 Dispersing agent N
4. Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances; or furtherly test for microorganisms.
Major Uses
1. Typical applications
Use as dispersing agent.
Use as emulsifying agent, emulsion stabilizer.
2. Textile, printing and dyeing
Use as dispersing agent, leveling agent.
Has a good ability to protect colloid, non-permeating, non-foaming.
Affinity for protein and polyamide fibers; no affinity for cotton fibers.
3. Dye
Dispersing agent, leveling agent in disperse dyes, reactive dyes, vat dyes widely. can be grinded with dyes.
4. Concrete
Water-reducing agent in concrete industry.
5. Agriculture
Dispersing agent in pesticide.
6. Personal care products
Emulsion stabilizer, hydrotrope, gel-forming agent in personal care products.
Manufacturers
 
References
[1]: ChemIDplus. 9084-06-4, Sodium polynaphthalenesulfonate
Update: 20131025(1); 20170409(2);