Pentamethylphenol

  • Methyl 3-mercaptopropionate
  • 2,3,4,5,6-Pentamethylphenol
Formula
C11H16O
Structure

Registry Numbers and Inventories.
CAS
2819-86-5
EC (EINECS/ELINCS)
220-580-0
Beilstein/Gmelin
2044591
Beilstein Reference
4-06-00-03412
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C11H16O
Formula mass
164.25
Melting point, °C
127 - 129
Boiling point, °C
267
Vapor pressure, mmHg
0.005 (25 C)
Solubility in water
4 g/L
pKa/pKb
11.21 (pKa)
Heat of vaporization
52.5 kJ/mol

Hazards and Protection.

Fire.
Flash Point,°C
124

Health.
Exposure effects
   Ingestion
Exposed individuals should have a careful, thorough medical history and physical examination performed looking for any abnormalities. Exposure to chemicals with a strong odor often results in such nonspecific symptoms as headache, dizziness, weakness, and nausea.
   Inhalation
May cause irritation. See Ingestion.
   Skin
May cause irritation. See Ingestion.
   Eyes
May cause irritation. See Ingestion.

First aid
 
   Ingestion
Significant esophageal or gastrointestinal tract irritation or burns may occur following 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 Consider gastric lavage after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Protect airway by placement in Trendelenburg and left lateral decubitus position or by endotracheal intubation. Control any seizures first.
   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 inhaled beta2 agonist and oral or parenteral corticosteroids. Respiratory tract irritation, if severe, can progress to pulmonary edema which may be delayed in onset up to 24 to 72 hours after exposure in some cases.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician may need to examine the area if irritation or pain persists. Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.
   Eyes
Irrigate exposed eyes with copious amounts of room temperature 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.