GHS Classification Result
GENERAL INFORMATION
REFERENCE INFORMATION
PHYSICAL HAZARDS
HEALTH HAZARDS
ENVIRONMENTAL HAZARDS
NOTE:
GENERAL INFORMATION
| Item | Information |
|---|---|
| CAS RN | 298-04-4 |
| Chemical Name | O,O-Diethyl-S-(2-ethylthioethyl) dithiophosphate [Disulfoton] |
| Substance ID | H29-B-075 |
| Classification year (FY) | FY2017 |
| Ministry who conducted the classification | Ministry of Health, Labour and Welfare (MHLW)/Ministry of the Environment (MOE) |
| New/Revised | Revised |
| Classification result in other fiscal year | FY2006 |
| Download of Excel format | Excel file |
REFERENCE INFORMATION
| Item | Information |
|---|---|
| Guidance used for the classification (External link) | GHS Classification Guidance for the Japanese Government (FY2013 revised edition (Ver. 1.1)) |
| UN GHS document (External link) | UN GHS document |
| Definitions/Abbreviations (Excel file) | Definitions/Abbreviations |
| Model Label by MHLW (External link) | |
| Model SDS by MHLW (External link) | MHLW Website (in Japanese Only) |
| OECD/eChemPortal (External link) | eChemPortal |
| Hazard class | Classification |
Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
|---|---|---|---|---|---|---|
| 1 | Explosives | Not applicable |
- |
- | - | There are no chemical groups associated with explosive properties present in the molecule. |
| 2 | Flammable gases (including chemically unstable gases) | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 3 | Aerosols | Not applicable |
- |
- | - | Not aerosol products. |
| 4 | Oxidizing gases | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 5 | Gases under pressure | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 6 | Flammable liquids | Not classified |
- |
- | - | Although a flash point of 133 deg C (unknown method) (GESTIS (Access on July 2017)) is from unknown method, it is judged that it will be above 93 deg C also in the proscribed closed-cup method. Therefore, it was classified as "Not classified." |
| 7 | Flammable solids | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 8 | Self-reactive substances and mixtures | Not applicable |
- |
- | - | There are no chemical groups present in the molecule associated with explosive or self-reactive properties. |
| 9 | Pyrophoric liquids | Classification not possible |
- |
- | - | No data available. |
| 10 | Pyrophoric solids | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 11 | Self-heating substances and mixtures | Classification not possible |
- |
- | - | Test methods applicable to liquid substances are not available. |
| 12 | Substances and mixtures which, in contact with water, emit flammable gases | Not classified |
- |
- | - | It contains metalloids (P), but it is estimated that it does not react vigorously with water from the measurement data of water solubility of 16.3 mg/L (20 deg C) (HSDB (Access on July 2017)). |
| 13 | Oxidizing liquids | Classification not possible |
- |
- | - | It is an organic compound which does not contain fluorine or chlorine but contains oxygen, and the oxygen is chemically bonded to the element other than carbon or hydrogen (P). However, the classification is not possible due to no data. |
| 14 | Oxidizing solids | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 15 | Organic peroxides | Not applicable |
- |
- | - | Organic compounds containing no bivalent -O-O- structure in the molecule |
| 16 | Corrosive to metals | Classification not possible |
- |
- | - | No data available. |
| Hazard class | Classification |
Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
|---|---|---|---|---|---|---|
| 1 | Acute toxicity (Oral) | Category 1 |
 Danger |
H300 |
P301+P310
P264 P270 P321 P330 P405 P501 |
There are five reports of LD50 values of 2.0 mg/kg (female) (JMPR (1975)), 2.3 mg/kg (female) (ACGIH (7th, 2002)), 2.6 mg/kg (female) (JMPR (1973)), 6.8 mg/kg (male) (ACGIH (7th, 2002)), 12.5 mg/kg (male) (JMPR (1973)) for rats, 3 data correspond to Category 1, and 2 data correspond to Category 2. It was classified in Category 1 by adopting the category with the largest number of cases. |
| 1 | Acute toxicity (Dermal) | Category 1 |
Danger |
H310 |
P302+P352
P361+P364 P262 P264 P270 P280 P310 P321 P405 P501 |
Based on reports of LD50 values of 2.5-50 mg/kg (male) (JMPR (1973)), 15 mg/kg (male) (ACGIH (7th, 2002)) for rats, it was classified in Category 1. |
| 1 | Acute toxicity (Inhalation: Gases) | Not applicable |
- |
- | - | Liquid (GHS definition) |
| 1 | Acute toxicity (Inhalation: Vapours) | Classification not possible |
- |
- | - | Classification not possible due to lack of data. Besides, the saturated vapor pressure concentration of this substance of 0.20 ppm (0.0022 mg/L) is extremely low, therefore, it is considered that the possibility of exposure to vapor is low. It was classified as "Not applicable" in the previous classification, but, this substance is liquid in the GHS definition, therefore, the classification result was changed. |
| 1 | Acute toxicity (Inhalation: Dusts and mists) | Category 1 |
Danger |
H330 |
P304+P340
P403+P233 P260 P271 P284 P310 P320 P405 P501 |
There are reports of LC50 values for rats of 0.015 mg/L (1.34 ppm) (female) and 0.06 mg/L (5.34 ppm) (male) (ACGIH (7th, 2002)) in 4-hour inhalation exposure tests, and 0.063 mg/L (5.6 ppm) (converted 4-hour equivalent value: 0.016 mg/L) (female) and 0.29 mg/L (25.8 ppm) (converted 4-hour equivalent value: 0.073 mg/L) (male) (ACGIH (7th, 2002)) in 1-hour inhalation exposure tests, 2 data correspond to Category 1, and 2 data correspond to Category 2. The category with higher hazard was adopted, and it was classified in Category 1. Besides, since the exposure concentrations were higher than the saturated vapor pressure concentration (0.0022 mg/L (0.20 ppm)), the reference values in the unit of mg/L were applied as mist. |
| 2 | Skin corrosion/irritation | Category 2 |
 Warning |
H315 |
P302+P352
P332+P313 P362+P364 P264 P280 P321 |
Based on the descriptions that it is severely irritating to human skin (EPA Pesticide (2006), HSDB (Access on June 2017)), it was classified in Category 2. The category was revised based on the information obtained in this research. |
| 3 | Serious eye damage/eye irritation | Classification not possible |
- |
- | - | Classification not possible due to lack of data. Although there are descriptions that it severely irritating to the eyes (EPA Pesticide (2006), HSDB (Access on June 2017)), the original sources cannot be confirmed and the details of the test are unknown, therefore it was classified as "Classification not possible." The category was revised based on the information obtained in this research. |
| 4 | Respiratory sensitization | Classification not possible |
- |
- | - | Classification not possible due to lack of data. |
| 4 | Skin sensitization | Classification not possible |
- |
- | - | Classification not possible due to lack of data. Although there is a description that it is a severe sensitizer to the skin (EPA Pesticide (2006)), the original source cannot be confirmed, and the content of the test is unknown, therefore, it was classified as "Classification not possible." The category was revised based on the information obtained in this research. |
| 5 | Germ cell mutagenicity | Classification not possible |
- |
- | - | The substance was classified as "Classification not possible" because it was not possible to classify a substance as "Not classified" according to the revised GHS classification guidance for the Japanese Government. As for in vivo, the results were negative in a dominant lethal test with mice and a micronucleus test with mouse bone marrow cells (ATSDR (1995)). As for in vitro, the results were positive and negative in bacterial reverse mutation tests, negative in a mammalian cell gene mutation test, positive in a mouse lymphoma test, positive and negative in sister chromatid exchange tests (ATSDR (1995)). |
| 6 | Carcinogenicity | Classification not possible |
- |
- | - | It is described that histological evidence of carcinogenicity was not found in carcinogenicity tests in which rats were dosed by feeding for two years, and mice were dosed by feeding for 99 weeks at up to 16 ppm (ACGIH (7th, 2002)). As for the classification results by other organizations, it was classified as group E by EPA in 1997 (Chemicals Evaluated for Carcinogenic Potential, Annual Cancer Report (2016)), it was classified as A4 by ACGIH in 2002 (ACGIH (7th, 2002)). From the above, based on the latest classification result by ACGIH, it was classified as "Classification not possible." |
| 7 | Reproductive toxicity | Category 2 |
 Warning |
H361 |
P308+P313
P201 P202 P280 P405 P501 |
In a test out of two 2-generation studies with rats dosed by feeding, at a high dose (9 ppm), a decrease in weight gain and a decrease in fertility index in F0, F1 dams, a decrease in viability in F1 and F2 pups were observed (Environmental Risk Assessment for Chemical Substances Vol. 5 (Ministry of the Environment, 2006), ACGIH (7th, 2002)); in the other one, at a high dose (9 ppm), a decreased number of implantations and a decreased litter size together with death, a decrease in weight gain, and tremors in F0 and F1 dams were observed (ACGIH (7th, 2002)). On the other hand, in a developmental toxicity test with pregnant rats dosed by gavage during the organogenesis period (gestational day 6-15), depressions of plasma and red blood corpuscle cholinesterase activity were observed in maternal animals at or above 0.3 mg/kg/day, but only slight effect (delayed ossification) was observed in fetuses even at a high dose (1.0 mg/kg/day) (Environmental Risk Assessment for Chemical Substances vol. 5 (Ministry of the Environment, 2006), ACGIH (7th, 2002)). In addition, also in developmental toxicity tests with pregnant rabbits, neither fetal toxicity nor teratogenicity was observed at doses where maternal toxicity (death, tremor, etc.) was found (ACGIH (7th, 2002)). As described above, in the 2 cases of 2-generation studies with rats, reproductive and developmental effects (a decreased fertility index, a decreased litter size, a decrease in viability of pups) were observed at the dose where general toxicity in parental animals manifested, therefore, it was classified in Category 2 for this hazard class. |
| 8 | Specific target organ toxicity - Single exposure | Category 1 (nervous system) |
Danger |
H370 |
P308+P311
P260 P264 P270 P321 P405 P501 |
This substance is an organophosphorus insecticide, and it inhibits cholinesterase (ACGIH (7th, 2002)). As for humans, it reported that as acute toxic symptoms due to the exposure to this substance by oral, dermal and inhalation, blurred vision, headache, dizziness, pinpoint pupils, muscle spasms, and weakness were observed, and higher levels of exposure can produce vomiting, abdominal pain, diarrhea, tremors, and coma (ACGIH (7th, 2001)). It is reported that as symptoms of respiratory impairment, respiratory paralysis can occur in addition to shortness of breath and respiratory depression (ACGIH (7th, 2001)). As for experimental animals, it was reported that in single exposure tests with rats dosed by oral, dermal and inhalation, convulsive seizures, prostration, and respiratory failure were observed following excitability, salivation, lacrimation, urination, defecation, and muscular fasciculations (JMPR (1973), ACGIH (7th, 2002)). Although there is no detailed description of the dose at which the effect was observed in the animal tests, since the LD50 value and the LC50 value correspond to the range for Category 1, it is considered that the effect was observed at the dose near the LD50 value and the LC50 value within the range for Category 1. From the above, it was classified in Category 1 (nervous system). |
| 9 | Specific target organ toxicity - Repeated exposure | Category 1 (nervous system, respiratory organs) |
Danger |
H372 |
P260
P264 P270 P314 P501 |
No information on humans is available. As for experimental animals, in a 13-week inhalation toxicity test with rats (6 hours/day, 5 days/week), at 1.4 mg/m3 (converted guidance value: 0.001mg/L) within a guidance value range for Category 1, inhibition of plasma, erythrocyte, brain cholinesterase activities and inflammation in the nasal turbinate were observed (Environmental Risk Assessment for Chemical Substances vol. 5 (Ministry of the Environment, 1991), JMPR (1991)). In a 13-week toxicity test with rats dosed by feeding, at or above 4 ppm (male: 0.27 mg/kg/day, female: 0.32 mg/kg/day) within the guidance value range for Category 1, inhibition of brain, plasma, and erythrocyte cholinesterase activities (comparing with the control group, it inhibited 20% or more) was observed; and at 16 ppm (male: 1.1 mg/kg/day, female: 1.3 mg/kg/day), cholinergic signs (muscular fasciculations, tremors, decreased forelimb grip strength, perianal stains, defecation) were observed (ACGIH (7th, 2002)). In a 2-year toxicity test with rats dosed by feeding, at or above 1 ppm (0.04 mg/kg/day) within the guidance value range for Category 1, inhibition of erythrocyte and brain cholinesterase activity was observed; at or above 4 ppm (0.165 mg/kg/day), optic nerve degeneration and cystic degeneration of the Harderian gland were observed; at 16 ppm (0.65 mg/kg/day), an increase in mortality rate, cholinergic signs, increased relative brain weight, mucosal hyperplasia and chronic inflammation of the forestomach, and corneal neovascularization were observed (ACGIH (7th, 2002), JMPR (1991), Environmental Risk Assessment for Chemical Substances vol. 5 (Ministry of the Environment, 2006), IRIS (1987)). In a 3-week, dermal application test with rabbits, at 6.5 mg/kg/day (converted guidance value: 1.08 mg/kg/day) within a guidance value range for Category 1, cholinergic effects (muscle spasms, dyspnea, salivation), deaths, and inhibition of plasma and erythrocyte cholinesterase activities were observed (JMPR (1991)). As described above, optic nerve degeneration was regarded as the effect on the nervous system, and inflammation in the nasal turbinate was regarded as the effect on the respiratory organs. Thus, it was classified in Category 1 (nervous system, respiratory organs). By using new information sources, the classification result was different from the previous one. |
| 10 | Aspiration hazard | Classification not possible |
- |
- | - | Classification not possible due to lack of data. |
| Hazard class | Classification |
Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
|---|---|---|---|---|---|---|
| 11 | Hazardous to the aquatic environment (Acute) | Category 1 |
 Warning |
H400 |
P273
P391 P501 |
From 48-hour EC50 = 0.013 mg/L for crustacea (Daphnia magna) (EPA AQUIRE: 2017, Pesticide Ecotoxicity Database), it was classified in Category 1. |
| 11 | Hazardous to the aquatic environment (Long-term) | Category 1 |
Warning |
H410 |
P273
P391 P501 |
Due to being not rapidly degradable (BioWin), and 21-day NOEC (reproduction inhibition) = 0.000037 mg/L for crustacea (Daphnia magna) (EPA AQUIRE: 2017, EPA Pesticide Ecotoxicity Database), it was classified in Category 1. |
| 12 | Hazardous to the ozone layer | Classification not possible |
- |
- | - | No data available. |
NOTE:
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* A blank or "-" in a cell of classification denotes that the classification of the hazard class was not conducted. * Hazard_statement_and/or_Precautionary_statement will show when hovering the mouse over a code of Hazard_statement_and/or_Precautionary_statement. Hazard_statement_and/or_Precautionary_statement are also provided in the Excel file. * Classification was conducted by relevant Japanese Ministries in accordance with GHS Classification Guidance for the Japanese Government, and is intended to provide a reference for preparing GHS labelling and SDS for users. * This is a provisional English translation of classification results and is subject to revision without notice. * The responsibility for any resulting GHS labelling and SDS referenced from this site is with users. * Codes assigned to each of the hazard statements and codes for each of the precautionary statement are based on the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) in United Nations. |