Clear liquid. This material is used as an intermediate in organic synthesis. (EPA, 1998)

none

No rapid reaction with air. No rapid reaction with water.

Emits very toxic fumes of chloride and phosphorus oxides when heated to decomposition. (EPA, 1998)

This material is a cholinesterase inhibitor. It has high oral and very high dermal toxicity. It is a skin irritant. It is also toxic by inhalation. (EPA, 1998)

Organophosphates, such as DIETHYL CHLOROPHOSPHATE, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.

• Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters
• Acyl Halides, Sulfonyl Halides, and Chloroformates

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below. More info about absorbents, including situations to watch out for...

• Cellulose-Based Absorbents
• Mineral-Based & Clay-Based Absorbents
• Dirt/Earth

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 3278 datasheet.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Use the following procedures for combustible liquids. Move container from fire area if you can do it without risk. Cool containers that are exposed to flames with water from the side until well after fire is out. For massive fire in cargo area, use unmanned hose holder or monitor nozzles; if this is impossible, withdraw from area and let fire burn. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire. Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing. Isolate for 1/2 mile in all directions if tank car or truck is involved in fire.

This material is combustible. Methods for combustible liquids are as follows. Small fires: dry chemical, carbon dioxide, water spray, or foam. Large fires: water spray, fog, or foam. (EPA, 1998)

Caution : Avoid sources of extreme heat including fire. Diethyl chlorophosphate will liberate toxic phosphorus oxide fumes and hydrogen chloride gas when heated to decomposition.

Do not touch spilled material. Do not breathe vapors. This material is a combustible liquid. For a spill or leak of a combustible liquid, shut off ignition sources; no flares, smoking or flames in hazard area. Stop leak if you can do so without risk. Use water spray to reduce vapors.

Small spills: absorb with sand or other noncombustible absorbent material and place into containers for later disposal.

Large spills: dike far ahead of spill for later disposal. Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. (EPA, 1998)

For emergency situations, wear a positive pressure, pressure-demand, full facepiece self-contained breathing apparatus (SCBA) or pressure- demand supplied air respirator with escape SCBA and a fully-encapsulating, chemical resistant suit. (EPA, 1998)

No information available.

Note: Diethyl chlorophosphate is a cholinesterase inhibitor.

Signs and Symptoms of Acute Diethyl Chlorophosphate Exposure: Acute exposure to diethyl chlorophosphate may produce the following signs and symptoms: pinpoint pupils, blurred vision, headache, dizziness, muscle spasms, and profound weakness. Vomiting, diarrhea, abdominal pain, seizures, and coma may also occur. The heart rate may either decrease following oral exposure or increase following dermal exposure. Chest pain may be noted. Hypotension (low blood pressure) may be observed, although hypertension (high blood pressure) is not uncommon. Respiratory symptoms include dyspnea (shortness of breath), respiratory depression, and respiratory paralysis. Diethyl chlorophosphate may severely irritate or burn the skin, eyes, or mucous membranes.

Emergency Life-Support Procedures: Acute exposure to diethyl chlorophosphate may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.

Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to diethyl chlorophosphate.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
4. Transport to a health care facility.

Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self- exposure to diethyl chlorophosphate.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Remove contaminated clothing as soon as possible.
4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas three times with soap and water.
6. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
7. Transport to a health care facility.

Ingestion Exposure:
1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
2. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
3. Give the victims water or milk: children up to 1 year old, 125 mL (4 oz or 1/2 cup); children 1 to 12 years old, 200 mL (6 oz or 3/4 cup); adults, 250 mL (8 oz or 1 cup). Water or milk should be given only if victims are conscious and alert.
4. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g (1/2 to 1 oz) for children, 50 to 100 g (1-3/4 to 3-1/2 oz) for adults, with 125 to 250 mL (1/2 to 1 cup) of water.
5. Promote excretion by administering a saline cathartic or sorbitol to conscious and alert victims. Children require 15 to 30 g (1/2 to 1 oz) of cathartic; 50 to 100 g (1-3/4 to 3-1/2 oz) is recommended for adults.
6. Transport to a health care facility. (EPA, 1998)

• CHLORODIETHOXYPHOSPHINE OXIDE
• CHLORODIETHYLPHOSPHATE
• CHLOROPHOSPHORIC ACID, DIETHYL ESTER
• DIETHOXYPHOSPHOROUS OXYCHLORIDE
• DIETHOXYPHOSPHORUS OXYCHLORIDE
• DIETHOXYPHOSPHORYL CHLORIDE
• DIETHYL CHLOROPHOSPHATE
• DIETHYL CHLOROPHOSPHONATE
• DIETHYL PHOSPHOCHLORIDATE
• DIETHYL PHOSPHOROCHLORIDATE
• DIETHYL PHOSPHOROCHLORIDE
• DIETHYLPHOSPHORIC ACID CHLORIDE
• ETHYL PHOSPHOROCHLORIDATE
• ETHYL PHOSPHOROCHLORIDATE (CL(ETO)2PO)
• ETHYL PHOSPHOROCHLORIDATE (ETO)2CLPO
• O,O-DIETHYL CHLORIDOPHOSPHATE
• O,O-DIETHYL CHLOROPHOSPHATE
• O,O-DIETHYL CHLOROPHOSPHONATE
• O,O-DIETHYL PHOSPHOROCHLORIDATE
• O,O-DIETHYLPHOSPHORYL CHLORIDE
• PHOSPHORIC ACID CHLORIDE DIETHYL ESTER
• PHOSPHORO- CHLORIDIC ACID, DIETHYL ESTER