English Safety Data Sheet Database 中文版 MSDS

O,O-diethyl phosphorochloridothioate

CAS No. 2524-04-1 | PubChem CID 17305
Section 1. Identification
Chemical NameO,O-diethyl phosphorochloridothioate CAS No.2524-04-1
Synonymsdi-ethylchlorothiophosphate; O,O'-diethylthiophosphorylchloride Chinese Name0,0'-二乙基硫代磷酰氯
Molecular FormulaC_1H_10Cl()_2 Molecular Weight188.613
UN No.2751 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS05 · Corrosive GHS06 · Acute Toxic GHS07 · Irritant GHS08 · Health Hazard
Hazard Statements H301H302H311H314H318H330H331H412H227H371H373
Precautionary Statements P260P261P262P264P264+P265P270P271P273P280P284P301+P316P301+P317P301+P330+P331P302+P352P302+P361+P354P304+P340P305+P354+P338P316P317P320P321P330P361+P364P363P403+P233P405P501P210P308+P316P319P370+P378P403

Section 2. Hazards Identification

H301 (51.3%): Toxic if swallowed [Danger Acute toxicity, oral]

H302 (48.7%): Harmful if swallowed [Warning Acute toxicity, oral]

H311 (89.5%): Toxic in contact with skin [Danger Acute toxicity, dermal]

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318 (39.5%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H330 (47.4%): Fatal if inhaled [Danger Acute toxicity, inhalation]

H331 (52.6%): Toxic if inhaled [Danger Acute toxicity, inhalation]

H412 (36.8%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

P260, P261, P262, P264, P264+P265, P270, P271, P273, P280, P284, P301+P316, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P320, P321, P330, P361+P364, P363, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 76 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

H227: Combustible liquid [Warning Flammable liquids]

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H311: Toxic in contact with skin [Danger Acute toxicity, dermal]

H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]

H330: Fatal if inhaled [Danger Acute toxicity, inhalation]

H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]

H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

P210, P260, P262, P264, P264+P265, P270, P271, P280, P284, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P320, P321, P330, P361+P364, P363, P370+P378, P403, P403+P233, P405, and P501 (click each P-code to see the statement)

Section 4. First-Aid Measures

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Do NOT induce vomiting. Rest. Refer for medical attention .

Section 5. Fire-Fighting Measures

Use water spray, powder, foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.

Section 6. Accidental Release Measures

Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

IF SOLN OF.../ACIDS/ ARE SPILLED...1. COLLECT OR CONFINE SPILLED MATERIAL IN THE MOST CONVENIENT & SAFE MANNER. 2. IF POSSIBLE, RECLAIM THE SPILLED MATERIAL. IF THIS IS NOT POSSIBLE; 3. DILUTE &/OR NEUTRALIZE & DISPOSE OF IN A SECURED SANITARY LANDFILL. /HYDROCHLORIC ACID/

NEUTRALIZING AGENTS...: FLUSH WITH WATER; APPLY POWDERED LIMESTONE, SLAKED LIME, SODA ASH, OR SODIUM BICARBONATE. /HYDROCHLORIC ACID/

Section 7. Handling and Storage

Separated from food and feedstuffs. Dry.

Section 8. Exposure Controls / Personal Protection

No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20 °C.

The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of the vapour may cause lung oedema. The effects may be delayed. Medical observation is indicated.

Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

NO open flames. NO contact with hot surfaces.

PREVENT GENERATION OF MISTS! IN ALL CASES CONSULT A DOCTOR!

Use ventilation, local exhaust or breathing protection.

Protective gloves. Protective clothing.

Wear safety goggles, face shield or eye protection in combination with breathing protection.

Do not eat, drink, or smoke during work.

Section 9. Physical and Chemical Properties

COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

COLORLESS TO LIGHT AMBER LIQUID

49 °C BELOW 1 MM HG; FP: BELOW -75 °C

92 °C c.c.

INSOL IN WATER; SOL IN MOST ORG SOLVENTS

Solubility in water: reaction

1.196 AT 25 °C/25 °C

Relative density (water = 1): 1.19

Vapor pressure, Pa at 50 °C: 190

STABLE AT ROOM TEMP; SLOWLY ISOMERIZES AT 100 °C

INDEX OF REFRACTION: 1.4705 AT 25 °C/D

Nuclear quadrupole resonance spectroscopy

Quadrupole coupling

Section 11. Toxicological Information

The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Burning sensation. Cough. Shortness of breath. Sore throat. Symptoms may be delayed.

MAY BE ABSORBED! Redness. Burning sensation. Pain. Blisters. Further see Inhalation.

MAY BE ABSORBED! Redness. Pain. Blurred vision. Loss of vision. Severe deep burns.

Abdominal cramps. Burning sensation. Diarrhoea. Vomiting. Further see Inhalation.

...IRRITANT TO EYES & LUNGS.

This substance may be hazardous to the environment. Special attention should be given to water quality.

Section 12. Ecological Information

This substance may be hazardous to the environment. Special attention should be given to water quality.

Section 14. Transport Information

Do not transport with food and feedstuffs.

UN Hazard Class: 8; UN Pack Group: II

Source: PubChem CID 17305 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:40:39.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.