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
CASRN：9084-06-4
EINECS：N/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
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3800mg/kg[1]
|
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rat intraperitoneal LD50
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460mg/kg[1]
|
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rat intravenous LD50
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435mg/kg[1]
|
|
mouse oral LD50
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3400mg/kg[1]
|
|
mouse intraperitoneal LD50
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315mg/kg[1]
|
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mouse subcutaneous LD50
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1275mg/kg[1]
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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
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Item
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Physical and chemical indexes
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Solid
|
|
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Actives, %, ≥
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85.0
|
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pH (25°C, 1%)
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7.0 - 9.5
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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
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Item
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Hazardous substances indexes
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Solid
|
|
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Heavy metals (as Pb), mg/Kg, ≤
|
20
|
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As, mg/Kg, ≤
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3
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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);