Proxan sodium

  • Sodium isopropyl xanthate
Formula
(CH3)2CHOCSSNa
Structure
Description
White to yellowish powder or lumps
Uses
Chemical weed killer of seeded crops, fortifying agent for certain oils, flotation reagent for base & precious metal ores.

Registry Numbers and Inventories.
CAS
140-93-2
EC (EINECS/ELINCS)
205-443-5
EC Index Number
006-024-00-8
EC Class
Harmful; Irritant; Dangerous for the Environment
RTECS
FG1581500
RTECS class
Other
UN (DOT)
3342
Merck
12,8780
Beilstein/Gmelin
3570298
Beilstein Reference
4-03-00-00404
EPA OPP
76301
Swiss Giftliste 1
G-2595
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4H7OS2*Na
Formula mass
158.22
Melting point, °C
124
Density
1.263 g/cm3 (20 C)
Solubility in water
450 g/L

Hazards and Protection.
Storage
Storage should be in a restricted area. Store in a cool, dry, well-ventilated area away from any ignition sources. Containers may be earthed to reduce the possibility of sparks from static electricity.
Handling
During handling of sodium isopropyl xanthate avoid generation of dust.
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
A combination respirator fitted with a particulate filter and a gas filter which can absorb carbon disulphide, such as type A or AX should be worn during the mixing process. The respiratory protective equipment should be in accordance with AS 1716.
Small spills/leaks
Care should be taken not to puncture containers when moving with forklift. In the event of a spill DO NOT wash material into drain or sewer. Personal protective equipment hould be worn. Vacuuming of solid spills is recommended. Collect in properly labelled containers for disposal.
Stability
No data.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon and sulfur.

Fire.
Upper exp. limit, %
50
Lower exp. limit, %
1.3
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
3
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.
   Eyes
Mild irritation.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.
UN number
3342
Response guide
Hazard class
4.2
Packing Group
II; III