298-00-0 structure, C8H10NO5PS
parathion-methyl
CAS No.: 298-00-0 Formula: C8H10NO5PS Molecular Weight: 263.20700
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parathion-methyl

CAS No.:

298-00-0

Formula:

C8H10NO5PS

Molecular Weight: 263.20700
Suppliers: All (14) China Suppliers (14) Price Available (2) Contractor(0)

Description

Parathion methyl is an organophosphate pesticide and insecticide.

Numbering system

UNII 41BCL2O91D

Properties

Appearance & Physical State

white crystalline powder

Density

1.36

Boiling Point

143°C (1.0 mmHg)

Melting Point

36°C

Flash Point

46.1°C

Water Solubility

0.005 g/100 mL

Stability

Stable. Flammable.

Storage Condition

APPROX 4°C

Safety Info

RTECS

TG0175000

Hazard Class

6.1(a)

Safety Statements

S28; S36/37; S45

HS Code

2920110000

Packing Group

II

RIDADR

UN 2052/2783/2811

Risk Statements

R5; R24; R26/28; R48/22; R50/53

Hazard Codes

T+; N; Xn; F

SDS 1.0

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SDS 1.0

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SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name parathion-methyl

1.2 Other means of identification

Product number -
Other names METHYL PARATHION

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Organophosphates and carbamates
Uses advised against no data available

1.4 Supplier's details

Company MOLBASE (Shanghai) Biotechnology Co., Ltd.
Address Floor 4 & 5, Building 12, No. 1001 North Qinzhou Road,
Xuhui District, Shanghai, China
Telephone +86(21)64956998
Fax +86(21)54365166

1.5 Emergency phone number

Emergency phone number +86-400-6021-666
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Flammable liquids, Category 3

Acute toxicity - Oral, Category 2

Acute toxicity - Dermal, Category 3

Acute toxicity - Inhalation, Category 2

Specific target organ toxicity – repeated exposure, Category 2

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Danger

Hazard statement(s)

H226 Flammable liquid and vapour

H300 Fatal if swallowed

H311 Toxic in contact with skin

H330 Fatal if inhaled

H373 May cause damage to organs through prolonged or repeated exposure

H410 Very toxic to aquatic life with long lasting effects

Precautionary statement(s)
Prevention

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P233 Keep container tightly closed.

P240 Ground and bond container and receiving equipment.

P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.

P242 Use non-sparking tools.

P243 Take action to prevent static discharges.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P264 Wash ... thoroughly after handling.

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

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P271 Use only outdoors or in a well-ventilated area.

P284 [In case of inadequate ventilation] wear respiratory protection.

P273 Avoid release to the environment.

Response

P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

P370+P378 In case of fire: Use ... to extinguish.

P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/doctor/…

P321 Specific treatment (see ... on this label).

P330 Rinse mouth.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P312 Call a POISON CENTER/doctor/…if you feel unwell.

P361+P364 Take off immediately all contaminated clothing and wash it before reuse.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P310 Immediately call a POISON CENTER/doctor/…

P320 Specific treatment is urgent (see ... on this label).

P314 Get medical advice/attention if you feel unwell.

P391 Collect spillage.

Storage

P403+P235 Store in a well-ventilated place. Keep cool.

P405 Store locked up.

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
parathion-methyl parathion-methyl 298-00-0 none 100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.

In case of skin contact

Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .

In case of eye contact

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

If swallowed

Induce vomiting (ONLY IN CONSCIOUS PERSONS!). See Notes. Give a slurry of activated charcoal in water to drink. Refer immediately for medical attention.

4.2 Most important symptoms/effects, acute and delayed

This material is extremely toxic; the probable oral lethal dose is 5-50 mg/kg, or between 7 drops and 1 teaspoonful for a 150-lb. person. Chronic toxicity does not appear to be a major consideration. (EPA, 1998)

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Organophosphates and related compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Advice for firefighters: Wear self contained breathing apparatus for fire fighting if necessary.

5.2 Specific hazards arising from the chemical

Poisonous gases are produced in fire and when heated. Decomposition may lead to sufficient internal pressure to cause the container to rupture violently. Avoid oxidizing materials. Unstable. High temperatures (120F) cause decomposition. (EPA, 1998)

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Personal protection: chemical protection suit including self-contained breathing apparatus. 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.

6.3 Methods and materials for containment and cleaning up

Personal precautions, protective equipment and emergency procedures: Wear respiratory protection. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Store in an area without drain or sewer access. Keep in a well-ventilated room. Separated from food and feedstuffs.Keep container tightly closed in a dry and well-ventilated place.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

Recommended Exposure Limit: 10 Hour Time-Weighted Average: 0.2 mg/cu m, skin.

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state white crystalline powder
Colour Crystals
Odour Pungent, garlic-like odor
Melting point/ freezing point 36°C
Boiling point or initial boiling point and boiling range 143°C (1.0 mmHg)
Flammability Combustible SolidCombustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.
Lower and upper explosion limit / flammability limit no data available
Flash point 46.1°C
Auto-ignition temperature 120°C (248 deg F) /Methyl parathion 80% in xylene/
Decomposition temperature 120°C
pH no data available
Kinematic viscosity no data available
Solubility In water:0.005 g/100 mL
Partition coefficient n-octanol/water (log value) log Kow = 2.86
Vapour pressure 9.7e-06 mm Hg at 20°C (EPA, 1998)
Density and/or relative density 1.36
Relative vapour density 9.1 (Relative to Air)
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Hydrolyzes slowly in weak acid, rapidly in alkali

10.3 Possibility of hazardous reactions

METHYL PARATHION is half decomposed in 8 days at 40°C. When a sample was heated in a small test tube it decomposed in a few minutes and the residue exploded (Food Chem. 4(1):42. 1956).

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Strong oxidizers, water [Note: Explosive risk when heated above 122 degrees F].

10.6 Hazardous decomposition products

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

11.Toxicological information

Acute toxicity

  • Oral: LD50 Mouse oral 18 mg/kg
  • Inhalation: LC50 Mouse inhalation 120 mg/cu m/4 hr
  • Dermal: LD50 Rat percutaneous 67 mg/kg

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

Cancer Classification: Not Likely to be Carcinogenic to Humans

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

  • Toxicity to fish: LC50; Species: /Oncorhynchus mykiss/ (rainbow trout) weight 1.1 g; Conditions: static bioassay, 12°C; Concentration: 3,700 ug/L for 96 hr (95% confidence limit 3,130-4,380 ug/L) /Technical material, 80-99%
  • Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (daphnid) 1st instar; Conditions: static bioassay, 21°C; Concentration: 0.14 ug/L for 48 hr (95% confidence limit 0.09-0.20 ug/L); Effect: immobilization. /Technical material, 80-99%
  • Toxicity to algae: EC50; Species: Anabaena inaequalis (Blue-Green Algae) age 3 days, exponential growth phase (Log) 1 X 10+5 Hormogonia/mL; Conditions: freshwater, static, 25°C, pH 7.5; Concentration: 19200 ug/L for 96 hr; Effect: population abundance /100% purity
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

Methyl parathion is degraded in soil, water and sediment(1,2). Products include aminomethylparathion, p-nitrophenol and O-methyl-O'-p-nitrophenylthiophosphoric acid(1). Biodegradation may be fairly rapid especially when microorganisms are acclimated to methyl parathion(2). Comparison of degradation rates in sterile versus nonsterile estuarine systems indicated that biodegradation was the primary route of methyl parathion degradation(3). In a die-away test using water and sediment cores from three sites (Escambia River, FL), methyl parathion had half-lives of 77 to 154 hrs, while in a sterile control the half-life was 367 hrs(4). In strongly reducing anaerobic sediments, the degradation rate was found to be about two orders of magnitude faster than in the same sediments which had been heat-sterilized(5). Biodegradation is significantly faster in sediment containing water than in water alone(4,5). 14C-Methyl parathion was degraded rapidly to carbon dioxide in Cecil sandy loam and Webster silty clay loam maintained at 10 and 33 kPa soil-water tension; >40% mineralization was observed in 14 days, leveling off to approximately 50% by day 28(6). After 32 days incubation in static sediment/water microcosms, 24% of the (14)C-methyl parathion had been mineralized to (14)CO2; degradation products included aminomethyl parathion, 4-aminophenol, and 4-nitrophenol(7).

12.3 Bioaccumulative potential

A BCF of 8.3 was determined for (14)C-methyl parathion in Oreochromis niloticus (Nile talapia) fingerlings(1). A BCF (calculated on an extractable lipid weight basis) of 959 was determined for methyl parathion in guppies (Poecilia reticulata)(2). According to a classification scheme(3), these BCF values suggest bioconcentration in aquatic organisms is low to high. However, methyl parathion does not bioconcentrate but rather is rapidly metabolized(4). An elimination rate constant of 2.38/day was measured(2), corresponding to a half-life of 7.0 hours(SRC). Methyl parathion was hydrolyzed by several shrimp and crayfish species(5).

12.4 Mobility in soil

Koc values of 366 to 423 were reported for methyl parathion(1). Average Koc values of 1,374 and 1,516 were measured for methyl parathion on 19 soil and sediment materials after 2 and 24 hours equilibration, respectively, using a batch equilibration technique; organic matter was the most important factor affecting adsorption of methyl parathion(2). According to a classification scheme(3), these Koc values suggest that methyl parathion is expected to have moderate to low mobility in soil.

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods

Product

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.

Contaminated packaging

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.

14.Transport information

14.1 UN Number

ADR/RID: UN2052 IMDG: UN2052 IATA: UN2052

14.2 UN Proper Shipping Name

ADR/RID: DIPENTENE
IMDG: DIPENTENE
IATA: DIPENTENE

14.3 Transport hazard class(es)

ADR/RID: 6.1(a) IMDG: 6.1(a) IATA: 6.1(a)

14.4 Packing group, if applicable

ADR/RID: II IMDG: II IATA: II

14.5 Environmental hazards

ADR/RID: yes IMDG: yes IATA: yes

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
parathion-methyl parathion-methyl 298-00-0 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Not Listed.
China Catalog of Hazardous chemicals 2015 Listed.
New Zealand Inventory of Chemicals (NZIoC) Not Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Not Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 20, 2017
Revision Date Aug 20, 2017

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%

References

  • IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
  • HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
  • IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
  • CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
  • ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
  • Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
  • ECHA - European Chemicals Agency, website: https://echa.europa.eu/

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.
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