Benzophenone 6

  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone
  • 4,4'-Dimethoxy-2,2'-dihydroxybenzophenone
  • Methanone, bis(2-hydroxy-4-methoxyphenyl)-
  • Cyasorb UV
  • Uvinul 3049
  • Uvinul D 49
Formula
C15H14O5
Structure
Description
Yellow granular powder.
Uses
Used as a ultraviolet light absorber, esp in paints, plastics.

Registry Numbers and Inventories.
CAS
131-54-4
EC (EINECS/ELINCS)
205-027-3
R 36/37/38
RTECS
DJ0900000
RTECS class
Mutagen
UN (DOT)
1325
Merck
13,1100
Beilstein/Gmelin
1887087
Beilstein Reference
4-08-00-03505
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C15H14O5
Formula mass
274.27
Melting point, °C
139 - 140
Boiling point, °C
422
Critical temperature
622
Critical pressure
34.2
Solubility in water
Insoluble
pKa/pKb
6.80 (pKa)
Partition coefficient, pKow
2.21

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. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. 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. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acrid smoke and fumes.

Fire.
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.
Fire potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.
Hazards
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Combustion products
Fire may produce irritating and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
Causes respiratory tract irritation. Causes irritation of mucous membrane.
   Skin
Causes skin irritation.
   Eyes
Causes 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
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1325
Response guide
Hazard class
4.1
Packing Group
II; III