Tetraethyl pyrophosphate and compressed gas mixtures

  • Tetraethyl pyrophosphate and compressed gas mixtures (LC50 more than 200 ppm but not more than 5000 ppm)
  • Tetraethyl pyrophosphate and compressed gas mixtures (LC50 not more than 200 ppm)
Formula
C8H20O7P2
Structure
Uses
Insecticide-acaricide, used on three vegetable crops and three fruit crops, one of first organic phosphate insecticides in U.S., largely replaced by other products.

Registry Numbers and Inventories.
CAS
107-49-3
EC (EINECS/ELINCS)
203-495-3
EC Index Number
015-025-00-2
EC Class
Very toxic; Dangerous for the Environment
RTECS
UX6825000
RTECS class
Agricultural Chemical and Pesticide; Drug; Human Data
UN (DOT)
1705
Merck
12,9345
Beilstein/Gmelin
1714017
Beilstein Reference
4-01-00-01342
RCRA
P111
EPA OPP
79601
Swiss Giftliste 1
G-4274

Properties.
Formula
C8H20O7P2
Formula mass
290.19
Boiling point, °C
135
Density
1.18 g/cm3 (25 C) (liquid)
Viscosity
5.1 cp (25 C)
Refractive index
1.4193 (20 C)

Hazards and Protection.
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Quickly hydrolyzed by water, half-life at 25 C about 7 hr in a 50% volvol mixt.

Fire.
Fire fighting
SMALL FIRES: Dry chemical, carbon dioxide or water spray. LARGE FIRES: Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Use water spray or fog; do not use straight streams. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
Highly toxic gases and vapors of unburned material and phosphoric acid are formed in fires.

Health.
Exposure limit(s)
TLV: 0.004 ppm; 0.047 mg/m3 (skin) (ACGIH 1991-1992). OSHA PEL: TWA 0.05 mg/m3 skin NIOSH REL: TWA 0.05 mg/m3 skin NIOSH IDLH: 5 mg/m3
Poison_Class
1
Exposure effects
Fever, low heart rate and abnormally low blood pressure, or rapid heart rate and elevated blood pressure may occur. Headache, dizziness, muscle spasms and profound weakness are common. Alterations of level of consciousness, anxiety, paralysis, seizures and coma may occur. Seizures may be more common in children.
   Ingestion
Vomiting, hypersalivation, diarrhea, fecal incontinence and abdominal pain may occur.
   Inhalation
Dyspnea, rales, bronchorrhea, bronchospasm, or tachypnea may be noted. Noncardiogenic pulmonary edema may occur in severe cases. Chemical pneumonitis may be seen.
   Skin
Sweating is a consistent but not universal sign.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
1705
Response guide
Hazard class
6.1
PRTC
T
USCG CHRIS Code
TEP
 
Std. Transport #
4921488