2,3-Dichloro-1,4-Naphthoquinone

  • Dichlone
Formula
C10H4Cl2O2
Structure
Description
A yellow crystalline solid. It is a wettable powder.
Uses
Seed disinfectant, fungicide for foliage and textiles, insecticide, organic catalyst.

Registry Numbers and Inventories.
CAS
117-80-6
EC (EINECS/ELINCS)
204-210-5
EC Index Number
606-018-00-0
EC Class
Harmful; Irritant; Dangerous for the Environment
R 22 36/38 50/53
S 26 60 61
RTECS
QL7525000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug
UN (DOT)
2811
Merck
13,3071
Beilstein/Gmelin
1073511
Beilstein Reference
4-07-00-02426
EPA OPP
29601
Swiss Giftliste 1
G-1533
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H4Cl2O2
Formula mass
227.05
Boiling point, °C
304
Vapor pressure, mmHg
0.0009 (25 C)
Vapor density (air=1)
7.8
Density
1.44 g/cm3 (16 C)
Solubility in water
Insoluble
Partition coefficient, pKow
2.35
Heat of vaporization
54.4 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, calcium arsenate, sprays containing lime, calcium arsenate, and mercury.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
127
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential
Material itself does not burn or burns with difficulty.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Highly toxic fumes are imminent.

Health.
Poison_Class
4
Exposure effects
CNS depression and coma may develop following large doses.
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. May cause respiratory tract irritation.
   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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing 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
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
DCL
 
HS Code
2914 70 90
 
Std. Transport #
4960616