Antioxidant 2246

  • Antioxidant bkf
  • Advastab 405
  • Antage w 400
  • Antioxidant 1
  • bis(2-Hydroxy-3-tert-butyl-5-methylphenyl)methane
Formula
(2-(OH)-3-(CH3)3C-5-(CH3)C6H2)2CH2
Structure
Description
Pale cream to white, free flowing powder. Phenolic odor.
Uses
Stabilizer used in styrenic and olefin polymers and polyoxymethylene homo and copolymers.

Registry Numbers and Inventories.
CAS
119-47-1
EC (EINECS/ELINCS)
204-327-1
EC Class
dangerous for the environment
S 22 24 61
RTECS
PA3500000
RTECS class
Primary Irritant
Beilstein/Gmelin
2062676
Beilstein Reference
4-06-00-06801
Swiss Giftliste 1
G-7456
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C23H32O2
Formula mass
340.51
Melting point, °C
125 - 128
Vapor density (air=1)
7.6
Density
1.08 g/cm3
Solubility in water
0.02 mg/L
Partition coefficient, pKow
6.25

Hazards and Protection.
Storage
Keep in a cool, dry location in a sealed container.
Handling
Dust suspended in air may ignite with static discharge. Cound equipment, provide adequate and keep away from ignition sources.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Sweep up spills and place in a waste disposal container. Flush area with water.
Disposal code
3
Stability
Stable at normal tempertures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
195
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. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
-
Exposure effects
Repeated contact with this material may cause minimal eye and skin irritation.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Pesticides - remove contaminated clothing and jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing. Irritation - treat dermal irritation or burns with standard topical therapy
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
HS Code
2907 29 00