Benzophenone-5
Time: 2012-10-01 09:06:50
Benzophenone-5
Synonyms
2-Hydroxy-4-methoxybenzophenone-5-sodium sulfonate;
Benzenesulfonic acid, 5-benzoyl-4-hydroxy-2-methoxy-, monosodium salt;
Sulibenzone;
Category
Anionic Surfactant
>> Sulfonate
>> Aryl Sulfonate
>> Benzophenone Group Sulfonate
>> Hydroxybenzophenone Group Sulfonate
Chemical Numbering System
CASRN6628-37-1
EINECSN/A
Molecular Formula & Molecular Weight
Molecular Formula: C14H11NaO6S; C14H12O6S.Na
Molecular Weight: 330.29
Structure
Properties
Appearance    (1), powder.
Solubility    soluble in water.
Stability    stable.
Risk    Solid form: flammable material; irritation, 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:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent UV absorbing, anti-photoaging, dispersing abilities.
Note    (1), Avoid using in children products, such as makeup.
Synthesis
2-Hydroxy-4-methoxybenzophenone and chlorosulfonic acid react, then sodium hydroxide or sodium carbonate neutralizes, finally obtain product.
Refer to:
US patent 5,849,955 Process for the synthesis of 2-hydroxy-4-alkyloxy benzophenone, etc.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
95.0
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. 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. 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 UV absorbing agent.
Use as photosensitizer.
2. Personal care products
Use as UV absorbing agent, UV filter.
*  *  *  *  *  *
Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 2000/6/EC, benzophenone-4 is included in Annex VI/22.
Maximum concentration is 5% (as acid).
(2), In China, in accordance with Safety and Technical Standards for Cosmetics (2015 edition), maximum concentration is 5% (as acid).
3. Coatings, paint
Use as UV absorbing agent.
Can improve anti-photoaging effect of film.
4. Polymers, resins, plastics, leather, fiber
Use as UV absorbing agent.
Manufacturers
 
Update: 20131025(1); 20170418(2);