Acephate

Acute toxicity - Category 4, Oral

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P301+P317 IF SWALLOWED: Get medical help.

P330 Rinse mouth.

none

P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

no data available

Fresh air, rest. Half-upright position. Refer for medical attention.

Rinse skin with plenty of water or shower.

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

Rinse mouth. Rest. Refer for medical attention .

Excerpt from ERG Guide 152 [Substances - Toxic (Combustible)]: Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. (ERG, 2016)

FIRST AID MEASURES EYES: Hold eye open and rinse slowly and gently with water for 15 to 20 minutes. Remove contact lenses, if present, after the first 5 minutes, then continue rinsing eyes. Call a poison control center or doctor for treatment advice. SKIN: If on skin or clothing, take off contaminated clothing. Rinse skin immediately with plenty of water for 15 to 20 minutes. Call a poison control center or doctor for treatment advice. INGESTION: If swallowed, call a poison control center or doctor immediately for treatment advice. Have person sip glass of water if able to swallow. Do not induce vomiting unless told to by a poison control center or doctor. Never give anything by mouth to an unconscious person. INHALATION: Move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration ... Call a poison control center or doctor for further treatment advice. NOTES TO PHYSICIAN: This material contains a cholinesterase inhibitor. Measurement of blood cholinesterase activity may be useful in monitoring exposure. If signs and/or symptoms of cholinesterase inhibition appear, atropine sulfate is antidotal. ... PROTOPAM is also antidotal and may be used in conjunction with atropine but should not be used alone. Orthene Fire Ant Killer 1 (50% acephate)

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped or safely confined. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, carbon dioxide or dry chemical. Organophosphorus pesticides, liquid, NOS

Excerpt from ERG Guide 152 [Substances - Toxic (Combustible)]: Combustible material: may burn but does not ignite readily. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. (ERG, 2016)

In case of fire in the surroundings, use appropriate extinguishing media.

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.

Environmental considerations- land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Organophosphorus pesticides, liquid and solid, NOS

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Separated from food and feedstuffs.Rooms used for storage only should be soundly constructed & fitted with secure locks. Floors should be kept clear & pesticides clearly identified. If repacking is carried out in storage rooms, adequate light should be available; floors should be impervious & sound . Pesticides

no data available

Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.

Wear safety spectacles.

Protective gloves.

Use ventilation, local exhaust or breathing protection.

no data available

Decomposes on heating. This produces toxic fumes including nitrogen oxides, phosphorus oxides and sulfur oxides.

Relatively stable

A thiophosphate ester. Organothiophosphates 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.

no data available

no data available

When heated to decomposition it emits very toxic fumes of /nitrogen, phosphous, and sulfur oxides/.

no data available

no data available

no data available

no data available

CLASSIFICATION: C; possible human carcinogen. BASIS FOR CLASSIFICATION: The classification is based on increased incidence of hepatocellular carcinomas and adenomas in female mice. HUMAN CARCINOGENICITY DATA: None. ANIMAL CARCINOGENICITY DATA: Limited.

no data available

The substance may cause effects on the nervous system and blood. This may result in cholinesterase inhibition. Medical observation is indicated. The effects may be delayed.

no data available

A harmful concentration of airborne particles can be reached quickly on spraying or when dispersed, especially if powdered.

AEROBIC: River die-away studies determined that acephate degraded more rapidly in non-sterile creek water as compared to sterilized creek water(1); after 50 days of incubation, 54.8% of initial acephate was degraded in non-sterile water while only 23.6% had degraded in sterile water(1); in water plus sediment tests, 74.5% degraded in non-sterile media while only 45% degraded in sterile media(1). Acephate degraded in aerobic soils with half-lives of generally < 3 days(2). Acephate, applied at concentrations of 1 or 10 ppm was rapidly degraded from a wide variety of soils (eight soils - 3 clays, loam, loamy sand, sandy clay loam, silty clay loam, muck) when incubated at 24 deg C at field capacity open to the air (volatiles not trapped and degradates other than methamidophos were not identified). In all cases, half-lives in mineral soils were <3 days at 10 ppm and about 1.5 days at 1 ppm(2). Half-lives in an Ocoee muck soil (pH 5.3, 68% organic matter) were 6 days at 1 ppm and 13 days at 10 ppm(2). Average maximum concentrations of methamidophos were approximately 10% of the initially applied radioactivity. In sterile controls (Norwalk silty clay loam and Greenville clay), after 4 days, approximately 90-100% of the applied amount remained as acephate, compared to approximately 20 % in the non-sterile(2). The effect of varying moisture contents (5 and 15%) was tested with the Hanford loamy sand treated with 20 ppm acephate; volatiles were not trapped. Degradation was more rapid at 15% moisture content than at 5%(2). Acephate degraded with a first-order half-life of 6.6 days in anaerobic flooded clay sediment(2). The initial pH of the system was 7.0, increasing to pH 7.9 by the final sampling interval (day 20). Acephate, applied as a wettable powder at 0.75 lbs/A, dissipated with an observed half-life of 1-3 days in the upper 5 cm of a field plot of silt loam soil used for growing tobacco in Greenville, Mississippi, after six foliar applications (6- to 9-day intervals)(2).

Acephate residues did not bioaccumulate in the edible tissues or viscera of bluegill sunfish continuously exposed to 0.007 or 0.7 ppm acephate for 35 days(1). The average bioconcentration factor in edible tissues during the study was 10. In a model ecosystem study, acephate did not bioaccumulate in any of the organisms in the ecosystem that included algae, clam, crab, daphnia, elodea, fish, mosquito and snail(2). According to a classification scheme(3), this BCF value suggests bioconcentration in aquatic organisms is low(SRC).

In batch equilibrium studies using four soils, acephate was not sufficiently adsorbed in 3 of the soils to permit determination of the adsorption coefficient(1). The Koc of acephate in the fourth soil, a clay loam with pH 5.8 and 3.3% organic matter was reported as 4.7(1). Based on a classification scheme(2), this Koc value indicates that acephate is expected to have very high mobility in soil(SRC).

no data available

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

ADR/RID: Not dangerous goods. (For reference only, please check.)

IMDG: Not dangerous goods. (For reference only, please check.)

IATA: Not dangerous goods. (For reference only, please check.)

ADR/RID: Not dangerous goods. (For reference only, please check.)

IMDG: Not dangerous goods. (For reference only, please check.)

IATA: Not dangerous goods. (For reference only, please check.)

ADR/RID: Not dangerous goods. (For reference only, please check.)

IMDG: Not dangerous goods. (For reference only, please check.)

IATA: Not dangerous goods. (For reference only, please check.)

ADR/RID: Not dangerous goods. (For reference only, please check.)

IMDG: Not dangerous goods. (For reference only, please check.)

IATA: Not dangerous goods. (For reference only, please check.)

ADR/RID: No

IMDG: No

IATA: No

no data available

no data available

Depending on the degree of exposure, periodic medical examination is suggested.Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.If the substance is formulated with solvents also consult the ICSCs of these materials.Carrier solvents used in commercial formulations may change physical and toxicological properties.