Dinoseb

  • 2-sec-Butyl-4,6-dinitrophenol
  • 2,4-Dinitro-6-sec-butylphenol
  • 2,4-Dinitro-6-(1-methylpropyl)phenol
  • 2-(1-Methylpropyl)-4,6-dinitrophenol
Formula
C10H12N2O5
Structure
Description
Orange-brown viscous liquid or orange-brown solid. Orange crystals when pure. Has a pungent odor.
Uses
Miticide - former use, herbicide.

Registry Numbers and Inventories.
CAS
88-85-7
EC (EINECS/ELINCS)
201-861-7
EC Index Number
609-025-00-7
EC Class
Risk of explosion if heated under confinement; Toxic; Toxic for reproduction Category 2; Toxic for reproduction Category 3; Irritant; Dangerous for the Environment
RTECS
SJ9800000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
2779
Merck
12,3341
Beilstein/Gmelin
3211812
Beilstein Reference
4-06-00-03279
RCRA
P020
EPA OPP
37505
Swiss Giftliste 1
G-1580
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H12N2O5
Formula mass
240.22
Melting point, °C
42
Boiling point, °C
318
Vapor pressure, mmHg
0.0002 (25 C)
Vapor density (air=1)
8.3
Density
1.2647 g/cm3 (20 C)
Solubility in water
1 g/L
pKa/pKb
4.08 (pKa)
Partition coefficient, pKow
3.61
Heat of vaporization
58.2 kJ/mol

Hazards and Protection.
Storage
Keep in well ventilated area.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Protective gloves and clothing. Safety goggles, face shield or eye protection in combination with breathing protection.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
This is a dinitrophenol herbicide. (Non-Specific -- Dinitrophenol, Flammable Solid) Do not handle broken packages without protective equipment. Wash away any material which may have contacted the body with copious amounts of water. Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Keep spilled material wet. Do not attempt to sweep up dry material.
Stability
2-year shelf life minimum; dow general weed killer: 2-year shelf life minimum.

Fire.
Flash Point,°C
132
Fire fighting
This is a dinitrophenol herbicide. (Non-Specific -- Dinitrophenol, Flammable Solid) Wear self-contained breathing apparatus and full protective clothing. If fire becomes uncontrollable, evacuate for a radius of 5000 feet.This material is a dinitrophenol herbicide. (Non-Specific -- Dinitrophenol, Flammable Solid) Extinguish by flooding with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Quite flammable.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
An elevated respiratory rate and blood pressure, and fever with diaphoresis are commonly seen. Rapid heart rate frequently occurs in acute poisoning. Personality changes, toxic psychosis, night sweats, and lethargy have been described after acute dermal and inhalational dinoseb exposure.
   Ingestion
Intermittent abdominal pain, nausea, vomiting, and excessive thirst have been described. The stools may be a bright yellow color.
   Inhalation
Intermittent chest pain has been described in a patient with dermal and inhalational dinoseb exposure. Shortness of breath and hemoptysis have been described following acute dermal and inhalational dinoseb exposure.
   Skin
Yellow staining of the skin, hair, and nails may be seen if direct contact occurs. Profuse sweating or shivering may be noted. Systemic dinoseb poisoning may be manifested by facial flushing.
   Eyes
Dinoseb caused severe irritation and permanent corneal damage when instilled into rabbit eyes. The sclera may be stained yellow.

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 jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing. Cutaneous exposure is usually accompanied by a yellowish discoloration which does not have to be removed entirely to prevent absorption.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2779
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
DSC