Substance profile
Antu (ISO)
Antu (ISO) is prisms from alcohol and is odorless.
01 · Identification
What Antu (ISO) is
Antu (ISO) is prisms from alcohol and is odorless. Its molecular formula is C11H10N2S and its molecular weight is 202.28 g/mol. It boils at 400 °C, melts at 198 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Antu (ISO) identifiers and molecular data
Antu (ISO) CAS number and EC number
Antu (ISO) molecular formula and molecular weight
Other names for Antu (ISO)
- 1-(1-naphthyl)-2-thiourea
03 · GHS classification
Antu (ISO) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Antu (ISO) pictograms and signal word
Antu (ISO) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 1 or 2 | H300 | GHS06 |
| Carcinogenicity GHS chapter 3.6 | Category 2 | H351 | GHS08 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Antu (ISO) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H300 | Fatal if swallowed. |
This page lists only the codes assigned to Antu (ISO). The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Antu (ISO)
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Antu (ISO) issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Antu (ISO) precautionary statements
CLP Annex VI assigns 8 precautionary statements to Antu (ISO). They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Antu (ISO) name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | анту (ISO) 1-(1-нафтил)-2-тиоуреа |
| Spanish español | Antu (ISO) 1-(1-naftil)-2-tiourea |
| Czech čeština | antu (ISO) 1-(1-naftyl)thiomočovina |
| Danish dansk | antu (ISO) 1-(1-naphthyl)-2-thiourinstof |
| German Deutsch | Antu (ISO) 1-(1-Naphthyl)-2-thioharnstoff |
| Estonian eesti | antu (ISO) 1-(1-naftüül)-2-tiokarbamiid |
| Greek ελληνικά | ANTU (ISO) 1-(1-ναφθυλο)-2-θειουρία |
| English English | antu (ISO) 1-(1-naphthyl)-2-thiourea |
| French français | antu (ISO) 1-(1-naphtyl)-2-thiourée |
| Croatian hrvatski | antu (ISO) 1-(1-naftil)-2-tiourea |
| Italian italiano | antu (ISO) 1-(naftil)-2-tiourea |
| Latvian latviešu | antu (ISO) 1-(1-naftil)-2-tiourīnviela |
| Lithuanian lietuvių | antu (ISO) 1-(1-naftil)-2-tiokarbamidas |
| Hungarian magyar | antu (ISO) 1-(1-naftil)-2-tiokarbamid |
| Maltese Malti | antu (ISO) 1-(1-naftil)-2-tijourea |
| Dutch Nederlands | antu (ISO) 1-(1-naftyl)-2-thio-ureum |
| Polish polski | antu (ISO) (1-naftylo)tiomocznik |
| Portuguese português | antu (ISO) 1-(1-naftil)-2-tioureia |
| Romanian română | antu (ISO) 1-(1-naftil)-2-tiouree |
| Slovak slovenčina | antu (ISO) 1-(1-naftyl)tiomočovina |
| Slovenian slovenščina | antu (ISO) 1-(1-naftil)-2-tiosečnina |
| Finnish suomi | antu (ISO) 1-(1-naftyyli)-2-tiourea |
| Swedish svenska | antu (ISO) 1-(1-naftyl)-2-tiourea |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Antu (ISO) GHS label elements
Everything CLP Annex VI fixes for Antu (ISO), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Antu (ISO)
- Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Fatal if swallowed.
- Obtain special instructions before use.
- Do not eat, drink or smoke when using this product.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF exposed or concerned:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention.
- Rinse mouth.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Antu (ISO) in the GHS label constructor →
07 · Health hazards
Antu (ISO) health hazards and exposure limits
Antu (ISO) carcinogenicity classification
EVALUATION: The available data were inadequate to evaluate the carcinogenicity of 1-naphthylthiourea to exptl animals. No data on humans were avail. The avail data are insufficient to evaluate the carcinogenicity of 1-naphthylthiourea to humans.
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
Antu (ISO) occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.3 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | TWA 0.3 mg/m3 | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | TWA 0.3 mg/m3 | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 100 mg/m3 (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 100.0 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 100 mg/cu m | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Antu (ISO) properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Antu (ISO) boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 400 °C (752 °F) | at 760 mmHg | DOE PAC |
| Decomposes | decomposes | NIOSH | |
| Decomposes (NIOSH, 2024) | decomposes | CAMEO |
Antu (ISO) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 198 °C (388.4 °F) | HSDB | |
| 197.78 °C (388 °F) | NIOSH |
Antu (ISO) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1 g/cm³ | HSDB |
Antu (ISO) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Solubility in acetone = 2.43 g/100 mL; in triethylene glycol = 8.6 g/100 mL; fairly soluble in hot alcohol | HSDB | |
| Slightly soluble in ethanol, ethyl ether, acetone | HSDB | ||
| In water, 600 mg/L at 25 °C | at 25 °C | HSDB |
Antu (ISO) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0 mmHg | at 25 °C | CAMEO |
| 0.000001 mmHg | at 25 °C | DOE PAC | |
| Low | NIOSH |
Antu (ISO) flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | May burn but will not ignite readily (EPA, 1998) | CAMEO |
Antu (ISO) lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Noncombustible Solid | NIOSH |
Antu (ISO) vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 6.99 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Antu (ISO) fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Antu (ISO) fire potential
/To fight fire use:/Powder, water spray, foam, carbon dioxide.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Antu (ISO) storage and handling
Antu (ISO) safe storage
Separated from strong oxidants, silver nitrate and food and feedstuffs.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Antu (ISO) storage conditions
Separated from strong oxidants, silver nitrate, food and feedstuffs.
Source: Hazardous Substances Data Bank (HSDB)
Antu (ISO) incompatible materials
Incompatibilities: Contact with strong oxidizers may cause fires and explosions.
Source: Hazardous Substances Data Bank (HSDB)
Antu (ISO) reactivity
ANTU is incompatible with the following: Strong oxidizers, silver nitrate (NIOSH, 2024).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Antu (ISO) in the storage compatibility matrix →
11 · Questions
Antu (ISO) — frequently asked questions
What is the CAS number of Antu (ISO)?
The CAS number of Antu (ISO) is 86-88-4. Its EC number is 201-706-3.
What is the chemical formula of Antu (ISO)?
The molecular formula of Antu (ISO) is C11H10N2S and its molecular weight is 202.28 g/mol.
What does a Antu (ISO) label have to show?
Under CLP Annex VI the label for Antu (ISO) carries the pictograms Skull and crossbones and Health hazard and the signal word is Danger.
Is Antu (ISO) flammable?
CLP Annex VI assigns Antu (ISO) no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is May burn but will not ignite readily (EPA, 1998) (CAMEO).
Is Antu (ISO) a carcinogen?
CLP Annex VI assigns Antu (ISO) H351 — suspected of causing cancer. That is category 2: the evidence points that way but is not conclusive. IARC places it in Group 3: not classifiable as to its carcinogenicity to humans.
What is the exposure limit for Antu (ISO)?
The US occupational exposure limit reported for Antu (ISO) is 0.3 [mg/m3] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Antu (ISO)?
The boiling point reported for Antu (ISO) is 400 °C (752 °F), at 760 mmHg (DOE PAC).
What is the melting point of Antu (ISO)?
The melting point reported for Antu (ISO) is 198 °C (388.4 °F) (HSDB).
How should Antu (ISO) be stored?
Separated from strong oxidants, silver nitrate, food and feedstuffs. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Antu (ISO)
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