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UV absorber UV-9

CAS No.: 131-57-7
Formula: C14H12O3
Molecular Weight: 228.24
Suppliers: All(0) China Suppliers(1) Products(3)
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What is UV absorber UV-9

**Introduction to 2-Hydroxy-4-methoxybenzophenone** 2-Hydroxy-4-methoxybenzophenone (also known as Oxybenzone or Benzophenone-3) is a synthetic organic compound widely used as a UV filter in sunscreens, cosmetics, and plastics. Its ability to absorb and dissipate ultraviolet (UV) radiation, particularly UV-A and UV-B rays, makes it effective in protecting skin and materials from sun damage. Due to its photostability and solubility in organic solvents, it is a popular ingredient in personal care formulations. However, its environmental impact, particularly on marine ecosystems, has raised concerns, leading to regulatory restrictions in some regions. Despite this, it remains a key component in UV protection applications, valued for its efficacy and versatility.

Preparation Process: To prepare **2-Hydroxy-4-methoxybenzophenone**, dissolve **2,4-dihydroxybenzophenone** (10 g) in **acetone** (50 mL). Add **dimethyl sulfate** (5.5 mL) and **anhydrous potassium carbonate** (15 g). Reflux the mixture at **60°C** for **6 hours** with stirring. Cool, filter, and evaporate the solvent. Dissolve the residue in **ethyl acetate**, wash with **5% NaOH** to remove unreacted phenol, then with water. Dry over **anhydrous Na₂SO₄**, filter, and concentrate. Recrystallize from **ethanol** to obtain pure product (yield ~85%). Confirm by **melting point (62-64°C)** and **HPLC**. Ensure proper ventilation due to toxic reagents.

Usage Scenarios: 2-Hydroxy-4-methoxybenzophenone is primarily used as a UV absorber in cosmetics, sunscreens, and personal care products to protect skin from harmful ultraviolet (UV) radiation. It absorbs UV-B and some UV-A rays, preventing sunburn and premature aging. The compound is also employed in plastics, coatings, and adhesives to enhance their UV resistance, preventing degradation and discoloration. Additionally, it serves as a stabilizer in polymers and synthetic materials exposed to sunlight. Its photostability and compatibility with various formulations make it a popular choice in industrial and consumer applications requiring prolonged UV protection. Safety assessments confirm its suitability for topical use at regulated concentrations.

UV absorber UV-9 Basic Info
Chemical Name UV absorber UV-9
Synonyms BENZOPHENONE-3;HMB;BP-3;2-HYDROXY-4-METHOXYBENZOPHENONE;Uv 9;HMBP;component of Presun 29;MOD;uf3;Oxybenzon
CAS No. 131-57-7
Molecular Formula C14H12O3
Molecular Weight 228.24
PSA 46.53000
LogP 2.63180
Safely Info
RTECS DJ1575000
Hazard Class 9
Safety Statements 26-36-37
HS Code 29145000
WGK Germany 2
Packing Group III
RIDADR UN 3077 9/PG III
Risk Statements 36/37/38
Hazard Codes Xi
Caution Statement P273-P391-P501
Hazard Declaration H410
Symbol GHS09
Signal Word Warning
UV absorber UV-9 Price
United States: $50-100
China: $30-60
Russia: $40-80
Germany: $60-120
India: $20-40
Japan: $50-100
Brazil: $40-80
South Korea: $50-100
Philippines: $30-60
United Kingdom: $60-120
France: $60-120
Mexico: $40-80
Canada: $50-100
South Africa: $30-60
Egypt: $30-60
Turkey: $40-80
Thailand: $30-60
Indonesia: $20-40
MSDS
MSDS
Name: 2-Hydroxy-4-Methoxybenzophenone 98% Material Safety Data Sheet
Synonym: Oxybenzone; HM
CAS: 131-57-7
Section 1 - Chemical Product   MSDS Name:2-Hydroxy-4-Methoxybenzophenone 98% Material Safety Data Sheet
Synonym:Oxybenzone; HM

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
131-57-7 2-Hydroxy-4-Methoxybenzophenone 98 205-031-5
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Not available.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
Ingestion of large amounts may cause gastrointestinal irritation.
May cause nausea and vomiting.
Inhalation:
May cause respiratory tract irritation.
Chronic:
Not available.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well-ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Storage:
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 131-57-7: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Powder
Color: pale yellow
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 150.0 - 160.0 deg C @ 5.00mmH
Freezing/Melting Point: 63.00 - 65.00 deg C
Autoignition Temperature: Not available.
Flash Point: > 100 deg C (> 212.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density:
Molecular Formula: C14H12O3
Molecular Weight: 228.25

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents, bases, acid chlorides, acid anhydrides.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 131-57-7: DJ1575000 LD50/LC50:
CAS# 131-57-7: Oral, mouse: LD50 = 3200 mg/kg; Oral, rat: LD50 = 7400 mg/kg; Oral, rat: LD50 = 7400 mg/kg.
Carcinogenicity:
2-Hydroxy-4-Methoxybenzophenone - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 131-57-7: 1
Canada
CAS# 131-57-7 is listed on Canada's DSL List.
CAS# 131-57-7 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 131-57-7 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
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