GHS Classification Result
GENERAL INFORMATION
REFERENCE INFORMATION
PHYSICAL HAZARDS
HEALTH HAZARDS
ENVIRONMENTAL HAZARDS
NOTE:
GENERAL INFORMATION
| Item | Information |
|---|---|
| CAS RN | 420-04-2 |
| Chemical Name | Cyanamide |
| Substance ID | H29-B-048 |
| 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 |
- |
- | - | Solid (GHS definition). |
| 3 | Aerosols | Not applicable |
- |
- | - | Not aerosol products. |
| 4 | Oxidizing gases | Not applicable |
- |
- | - | Solid (GHS definition). |
| 5 | Gases under pressure | Not applicable |
- |
- | - | Solid (GHS definition). |
| 6 | Flammable liquids | Not applicable |
- |
- | - | Solid (GHS definition). |
| 7 | Flammable solids | Classification not possible |
- |
- | - | There is the information that it is combustible at increased temperature (ICSC (J) (2007)), but the classification is not possible due to no data. |
| 8 | Self-reactive substances and mixtures | Classification not possible |
- |
- | - | There is a chemical group associated with self-reactive properties (aminonitriles) in the molecule, but the classification is not possible due to no data. |
| 9 | Pyrophoric liquids | Not applicable |
- |
- | - | Solid (GHS definition). |
| 10 | Pyrophoric solids | Classification not possible |
- |
- | - | No data available. |
| 11 | Self-heating substances and mixtures | Classification not possible |
- |
- | - | Test methods applicable to solid (melting point <= 140 deg C) substances are not available. |
| 12 | Substances and mixtures which, in contact with water, emit flammable gases | Not applicable |
- |
- | - | The chemical structure of the substance does not contain metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At). |
| 13 | Oxidizing liquids | Not applicable |
- |
- | - |
Solid (GHS definition). |
| 14 | Oxidizing solids | Not applicable |
- |
- | - | Organic compounds containing no oxygen, fluorine or chlorine |
| 15 | Organic peroxides | Not applicable |
- |
- | - | Organic compounds containing no bivalent -O-O- structure in the molecule |
| 16 | Corrosive to metals | Classification not possible |
- |
- | - | There is the information that it is a substance with melting point of <= 55 deg C and is corrosive to metals (steel, copper, aluminum, etc.) (ICSC (J) (2007)), but the classification is not possible due to no data. |
| Hazard class | Classification |
Pictogram Signal word |
Hazard statement (code) |
Precautionary statement (code) |
Rationale for the classification | |
|---|---|---|---|---|---|---|
| 1 | Acute toxicity (Oral) | Category 3 |
 Danger |
H301 |
P301+P310
P264 P270 P321 P330 P405 P501 |
Based on reports of LD50 values for rats of 100-125 mg/kg (male) (DFGOT vol. 24 (2007)), 125 mg/kg (ACGIH (7th, 2001), PATTY (6th, 2012), HSDB (Access on June 2017)), 223 mg/kg (DFGOT vol. 24 (2007)), and 280 mg/kg (HSDB (Access on June 2017)), it was classified in Category 3. |
| 1 | Acute toxicity (Dermal) | Category 3 |
Danger |
H311 |
P302+P352
P361+P364 P280 P312 P321 P405 P501 |
Based on reports of LD50 values for rabbits of 590 mg/kg (HSDB (Access on June 2017)), 742 mg/kg (female), and 901 mg/kg (male) (both DFGOT vol. 24 (2007)), it was classified in Category 3. The category was changed from the previous classification by using new information sources. |
| 1 | Acute toxicity (Inhalation: Gases) | Not applicable |
- |
- | - | Solid (GHS definition) |
| 1 | Acute toxicity (Inhalation: Vapours) | Not applicable |
- |
- | - | Solid (GHS definition) |
| 1 | Acute toxicity (Inhalation: Dusts and mists) | Classification not possible |
- |
- | - | Classification not possible due to lack of data. There is a report of an LC50 value of > 1.0 mg/L in a 4-hour inhalation exposure test with rats (DFGOT vol. 24 (2007)). However, since it was not possible to identify a category from this value alone, it was classified as "Classification not possible." |
| 2 | Skin corrosion/irritation | Category 2 |
 Warning |
H315 |
P302+P352
P332+P313 P362+P364 P264 P280 P321 |
Based on a description of strong irritation of the skin in humans (Environmental Risk Assessment for Chemical Substances Vol.9, Tentative Hazard Assessment Sheet (Ministry of the Environment, 2011)) and on a report that in a skin irritation test with rabbits, slight to moderate erythema and slight to severe oedema were produced on the intact skin (DFGOT vol. 24 (2007)), it was classified in Category 2. Besides, this substance was classified as Skin Irrit. 2 in EU CLP classification (ECHA CL Inventory (Access on June 2017)). Based on the information obtained in this survey, the category was revised. |
| 3 | Serious eye damage/eye irritation | Category 2A |
Warning |
H319 |
P305+P351+P338
P337+P313 P264 P280 |
Based on a description of irritation of the eyes in humans, and on a report that in an eye irritation test with rabbits, moderate to severe irritation (redness, swelling of the conjunctiva, corneal opacity) was observed and this did not resolve within one week in some cases, it was classified in Category 2A. Besides, this substance was classified as Eye Irrit. 2 in EU CLP classification (ECHA CL Inventory (Access on June 2017)). Based on the information obtained in this survey, the category was revised. |
| 4 | Respiratory sensitization | Classification not possible |
- |
- | - | Classification not possible due to lack of data. |
| 4 | Skin sensitization | Category 1 |
Warning |
H317 |
P302+P352
P333+P313 P362+P364 P261 P272 P280 P321 P501 |
In a maximization test with guinea pigs, intradermal injection and induction with a 10% aqueous solution of this substance and petrolatum containing 5% of this substance were performed, and a challenge with petrolatum containing 2.5% of this substance on Day 21 was performed. As a result, the positive rate was 100% 24 and 48 hours after the application (DFGOT vol. 24 (2007)). In addition, there is a description that repeated or prolonged contacts may cause skin sensitization in humans (HSDB (Access on June 2017)). From the above, it was classified in Category 1. Besides, there is a description that in grapevine producers handling this substance without wearing protective equipment, among four persons in whom strong skin effects were observed, skin damage like erythema multiforme in two persons and skin damage like Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) in the other two occurred (HSDB (Access on June 2017)). This substance was classified as Skin Sens. 1 in EU CLP classification (ECHA CL Inventory (Access on June 2017)). |
| 5 | Germ cell mutagenicity | Classification not possible |
- |
- | - | As for in vivo, micronucleus tests with mouse bone marrow cells were negative (DFGOT vol. 24 (2007)). As for in vitro, bacterial reverse mutation tests were negative (DFGOT vol. 24 (2007)). From the above, it was classified as "Classification not possible" according to the GHS classification guidance for the Japanese government. The category was changed because the information source in the previous classification (A pesticide abstract and evaluation report (Food and Agricultural Materials Inspection Center, 2002)) was not able to be confirmed. |
| 6 | Carcinogenicity | Classification not possible |
- |
- | - | In a 2-year carcinogenicity study with mice dosed by drinking water, an increasing tendency of tumors of the granulosa and theca cells in the ovary was observed, but similar findings were also observed in 3/60 of the control group. However, when one of these cases was excluded because of a suspicious finding, a statistically significant increase (8/58 cases) at the highest dose (600 mg/L) was shown. The original authors did not describe the increase in tumors in the high dose group as effects of administration, based on the fact that the finding in one case of a control group was questionable with regard to an increase in tumors of the granulosa and theca cells in the ovary, and it was stated that further investigation was required (DFGOT vol. 24 (2007)). From the above, it is difficult to say that ovary tumors in mice constitute clear evidence for carcinogenicity due to the administration of this substance, and there is no other information on carcinogenicity of this substance. Therefore, it was classified as "Classification not possible." |
| 7 | Reproductive toxicity | Category 2 |
 Warning |
H361 |
P308+P313
P201 P202 P280 P405 P501 |
In a two-generation study with rats dosed by gavage, decreased body weight gain, a decrease in the number of corpora lutea, implantations, and offspring, and decreased fertility rate were observed in F0 females at 25 mg/kg/day (DFGOT vol. 24 (2007), Environmental Risk Assessment for Chemical Substances Vol.9, Tentative Hazard Assessment Sheet (Ministry of the Environment, 2011), PATTY (6th, 2012)). In F0 males, a decrease in the relative weight of the epididymis, testicular atrophy, and absence of sperm in the epididymal tubules were observed at 25 mg/kg/day (DFGOT vol. 24 (2007)). In F1, effects on developmental indexes including opening failure of the auricle and descent failure of the testes were observed at 25 mg/kg/day. Besides, in order to examine whether a cause of decreased fertility rate was in females or males, females and males which were dosed at 25 mg/kg/day were mated with untreated females and males. As a result, decreased fertility rate was indicated when treated males were mated with untreated females, but no effect on a fertility rate was observed when treated females were mated with untreated males (DFGOT vol. 24 (2007)). From the above, effects on the male genetic organs and on development in pups, in addition to decreased fertility rate, were observed at the dose where decreased body weight gain in F0 females was observed. Therefore, it was classified in Category 2. Besides, in this review, since the information available for classification was obtained from the information source in List 1, the classification became possible. |
| 8 | Specific target organ toxicity - Single exposure | Category 1 (central nervous system), Category 3 (respiratory tract irritation) |
Danger Warning |
H370
H335 |
P308+P311
P260 P264 P270 P321 P405 P501 P304+P340 P403+P233 P261 P271 P312 |
There is a report that in a single oral administration test with rats, at 150 mg/kg/day corresponding to Category 1, lethargy, tremor, crouching position, ataxia and piloerection, and at higher doses, in addition to these symptoms, abnormal gait, abdominal position, labored breathing and bloody lacrimation were shown, and at necropsy, pulmonary hemorrhage and pleural effusion were observed (DFGOT vol. 24 (2007)). In addition, there is a report that in a single inhalation test in which rats were exposed to an aerosol of this substance, at a 4-hour inhalation exposure at 1 mg/L, closed eyes, shallow breathing, and frequent coughing and swallowing reaction were shown, but these resolved several hours after the end of exposure (DFGOT vol. 24 (2007)). From the above, it was classified in Category 1 (central nervous system), Category 3 (respiratory tract irritation). The classification result was changed from the previous classification by using the new information source. Besides, there is a description that since this substance inhibits aldehyde dehydrogenase, it is used as an alcohol consumption inhibitor in humans, and after ingesting alcohol (and foods containing alcohol, etc.) after oral ingestion of this substance, facial flushing, blood pressure reduction, nausea, tachycardia, dizziness, dyspnea, and decreased visual acuity may occur (Ethical Pharmaceuticals 2017 (2016)). |
| 9 | Specific target organ toxicity - Repeated exposure | Category 1 (haemal system, thyroid, liver, genetic organs (men)) |
Danger |
H372 |
P260
P264 P270 P314 P501 |
As for humans, there is a description that since this substance inhibits aldehyde dehydrogenase, it is used as an alcohol consumption inhibitor, and it is usually administered at 50-200 mg per day in alcohol abstinence therapy, and at 15-60 mg per day in alcohol sobriety therapy, and as side effects, effects on the skin, blood, and liver are pointed out (Environmental Risk Assessment for Chemical Substances Vol.9, Tentative Hazard Assessment Sheet (Ministry of the Environment, 2011)), and there are reports that in patients who used this substance as an alcohol aversion medication, ground-glass like hepatitis, which was not seen before the treatment, was seen after the treatment (PATTY (6th, 2012), DFGOT vol. 24 (2007)). As for experimental animals, in a 28-day repeated oral dose toxicity test with rats given by gavage, bile duct hyperplasia of the liver, decreased colloid of the thyroid follicles at or above 10 mg/kg/day (converted guidance value: 3.11 mg/kg/day) within a guidance value range for Category 1, decreased body weight gain and increased liver weight at 20 mg/kg/day or above (converted guidance value: 6.22 mg/kg/day), and a decrease in the erythrocyte count, hemoglobin concentration and hematocrit value, an increase in weight of the thyroid and parathyroid, and hyperplasia of the thyroid follicular cells, etc. were observed at 40 mg/kg/day (converted guidance value: 12.44 mg/kg/day) within the guidance value range for Category 2. In a 90-day repeated oral dose toxicity test with rats given by feeding, an increase in the solid and small thyroid follicle and increased incidence of proliferation of the follicular epithelial cells and parafollicular epithelial cells at 1.5 mg/kg/day or above within the guidance value range for Category 1, and an increase in the erythrocyte count and relative liver weight, decreased thymus relative weight at 4.5 mg/kg/day were observed (Environmental Risk Assessment for Chemical Substances Vol.9, Tentative Hazard Assessment Sheet (Ministry of the Environment, 2011), DFGOT vol. 24 (2007)). In addition, in a 90-day repeated oral dose toxicity test with dogs given by gavage, decreased testes weight, atrophy of the testicular tubules, decreased spermatogenesis, and an decrease in the number of spermatocytes in the epididymis at or above 0.6 mg/kg/day within the guidance value range for Category 1, an decrease in T4 value and AST, increased ALT, and increased mononuclear leukocyte count at 2 mg/kg/day or above, and decreased body weight gain and an decrease in the hemoglobin concentration and hematocrit value at 6 mg/kg/day were observed (Environmental Risk Assessment for Chemical Substances Vol.9, Tentative Hazard Assessment Sheet (Ministry of the Environment, 2011), DFGOT vol. 24 (2007)). From the above, it was classified in Category 1 (haemal system, thyroid, liver, genetic organs (men)). Since the new information sources were used, the classification result was different from the previous classification. |
| 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 72-hour EC50 (biomass) = 0.37 mg/L for algae (Anabaena flosaquae) (EPA AQUIRE: 2017, Pesticide Ecotoxicity Database (1992)), it was classified in Category 1. |
| 11 | Hazardous to the aquatic environment (Long-term) | Category 1 |
Warning |
H410 |
P273
P391 P501 |
If chronic toxicity data are used, then it is classified in Category 1 due to being not rapidly degradable (non-biodegradable, average degradation rate by BOD: 0% (J-CHECK, 2012)), and 21-day NOEC (body length) = 0.1 mg/L for crustacea (Daphnia magna) (EPA AQUIRE: 2017, Pesticide Ecotoxicity Database (1992)). If acute toxicity data are used for a trophic level for which chronic toxicity data are not obtained, then it is classified in Category 1 due to being not rapidly degradable (non-biodegradable, average degradation rate by BOD: 0% (J-CHECK, 2012)), and 72-hour EC50 (biomass) = 0.37 mg/L for algae (Anabaena flosaquae) (EPA AQUIRE: 2017, Pesticide Ecotoxicity Database (1992)). From the above results, 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. |