2-Hydroxy-4-methoxybenzophenone

  • Oxybenzone
Formula
C14H12O3
Structure
Description
White to off-white or light yellow powder.
Uses
Sunscreen agent.

Registry Numbers and Inventories.
CAS
131-57-7
EC (EINECS/ELINCS)
205-031-5
R 36/37/38
RTECS
DJ1575000
RTECS class
Tumorigen; Mutagen; Reproductive Effector
UN (DOT)
1325
Merck
12,7088
Beilstein/Gmelin
1913145
Beilstein Reference
4-08-00-02442
EPA OPP
691
Swiss Giftliste 1
G-7745
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C14H12O3
Formula mass
228.25
Melting point, °C
65
Boiling point, °C
370
Vapor pressure, mmHg
5E-6 (25 C)
Density
1.3397 g/cm3 (25 C)
Solubility in water
Insoluble
pKa/pKb
7.56 (pKa)
Partition coefficient, pKow
3.82
Heat of vaporization
64.1 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
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.
Protection
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, bases, acid chlorides, acid anhydrides.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
140
Fire fighting
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. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This material is probably combustible.
Combustion products
Fire may produce irritating and/or toxic gases.

Health.
Poison_Class
-
Exposure effects
   Ingestion
Ingestion of large amounts may cause gastrointestinal irritation. May cause nausea and vomiting.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   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 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.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   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.

Transport.
UN number
1325
Response guide
Hazard class
4.1
Packing Group
II; III
 
HS Code
2914 50 00