Substance profile
Indium phosphide
Indium phosphide is a brittle mass with metallic appearance.
01 · Identification
What Indium phosphide is
Indium phosphide is a brittle mass with metallic appearance. Its molecular formula is InP and its molecular weight is 145.792 g/mol. It melts at 1070 °C, is slightly soluble in water.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Indium phosphide identifiers and molecular data
Indium phosphide CAS number and EC number
Indium phosphide molecular formula and molecular weight
03 · GHS classification
Indium phosphide hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Indium phosphide pictograms and signal word
Indium phosphide hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Carcinogenicity GHS chapter 3.6 | Category 1A or 1B | H350 | GHS08 |
| Specific target organ toxicity - repeated exposure GHS chapter 3.9 | Category 1 | H372 | 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.
Indium phosphide hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H361f | Suspected of damaging fertility. |
| H372 | Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
This page lists only the codes assigned to Indium phosphide. 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 Indium phosphide
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 Indium phosphide 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
Indium phosphide precautionary statements
CLP Annex VI assigns 7 precautionary statements to Indium phosphide. 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
Indium phosphide 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 | индиев фосфид |
| Spanish español | Fosfuro de indio |
| Czech čeština | fosfid inditý |
| Danish dansk | indiumphosphid |
| German Deutsch | Indiumphosphid |
| Estonian eesti | indiumfosfiid |
| Greek ελληνικά | φωσφίδιο του ινδίου |
| English English | indium phosphide |
| French français | phosphure d'indium |
| Croatian hrvatski | indijev fosfid |
| Italian italiano | fosfuro di indio |
| Latvian latviešu | indija fosfīds |
| Lithuanian lietuvių | indžio fosfidas |
| Hungarian magyar | indium-foszfid |
| Maltese Malti | fosfid tal-indju |
| Dutch Nederlands | indiumfosfide |
| Polish polski | fosforek indu |
| Portuguese português | fosforeto de índio |
| Romanian română | fosfură de indiu |
| Slovak slovenčina | fosfid india |
| Slovenian slovenščina | indijev fosfid |
| Finnish suomi | indiumfosfidi |
| Swedish svenska | indiumfosfid |
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
Indium phosphide GHS label elements
Everything CLP Annex VI fixes for Indium phosphide, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Indium phosphide
- May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Suspected of damaging fertility.
- Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Obtain special instructions before use.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF exposed or concerned:
- Get medical advice/attention.
- Get medical advice/attention if you feel unwell.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Indium phosphide in the GHS label constructor →
07 · Health hazards
Indium phosphide health hazards and exposure limits
Indium phosphide hazard summary
The soluble salts are very irritating to the eyes. There is evidence of liver injury in rats after chronic high-dose inhalation studies; [HSDB] An irritant; [MSDSonline] MAC-2 (considered to be carcinogenic for man because sufficient data from long-term animal studies or limited evidence from animal studies substantiated by evidence from epidemiological studies indicate that it can make a significant contribution to cancer risk); [MAK] See Indium. See PHOSPHIDES.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Indium phosphide carcinogenicity classification
Under the conditions of these 2-year inhalation studies, there was clear evidence of carcinogenic activity of indium phosphide in male and female F344/N rats based on increased incidences of benign and malignant neoplasms of the lung. Increased incidences of pheo-chromocytoma of the adrenal medulla in males and females were also considered to be exposure related. Marginal increases in incidences of mononuclear cell leukemia in males and females, fibroma of the skin in males, and carcinoma of the mammary gland in females may have been related to exposure to indium phosphide. There was clear evidence of carcinogenic activity of indium phosphide in male B6C3F1 mice based on increased incidences of malignant neoplasms of the lung and benign and malignant neoplasms of the liver. Marginal increases in incidences of adenoma and carcinoma of the small intestine may have been related to exposure to indium phosphide. There was clear evidence of carcinogenic activity of indium phosphide in female B6C3F1 mice based on increased incidences of benign and malignant neoplasms of the lung. Increased incidences of liver neoplasms in females were also considered to be exposure related.
Source: US National Toxicology Program · TR-499: Toxicology and Carcinogenesis Studies of Indium Phosphide (CASRN 22398-80-7) in F344/N Rats and B6C3F1 Mice (Inhalation Studies) (2001 )
/Evaluation/ There is inadequate evidence in humans for the carcinogenicity of indium phosphide. There is sufficient evidence in experimental animals for the carcinogenicity of indium phosphide.
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.
08 · Physical and chemical properties
Indium phosphide 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.
Indium phosphide melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 1070 °C (1958 °F) | HSDB |
Indium phosphide density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 4.81 g/cm³ | HSDB |
Indium phosphide solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Slightly soluble in acid | HSDB | |
| Slightly soluble in mineral acids | HSDB |
Indium phosphide lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Explosive reaction with dinitrogen tetraoxide + acetonitrile. Violent reaction with mercury(II) bromide at 350 °C. | at 350 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Indium phosphide 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.
Indium phosphide fire potential
Flammable in the form of dust when exposed to heat or flame.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Indium phosphide storage and handling
Indium phosphide incompatible materials
Can react with moisture or acids to liberate phosphine (PH3);
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Indium phosphide in the storage compatibility matrix →
11 · Questions
Indium phosphide — frequently asked questions
What is the CAS number of Indium phosphide?
The CAS number of Indium phosphide is 22398-80-7. Its EC number is 244-959-5.
What is the chemical formula of Indium phosphide?
The molecular formula of Indium phosphide is InP and its molecular weight is 145.792 g/mol.
What does a Indium phosphide label have to show?
Under CLP Annex VI the label for Indium phosphide carries the pictogram Health hazard and the signal word is Danger.
Is Indium phosphide flammable?
CLP Annex VI assigns Indium phosphide 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.
Is Indium phosphide a carcinogen?
Yes. CLP Annex VI classifies Indium phosphide as a category 1A or 1B carcinogen and assigns it H350: may cause cancer. IARC places it in Group 2A: probably carcinogenic to humans.
What is the melting point of Indium phosphide?
The melting point reported for Indium phosphide is 1070 °C (1958 °F) (HSDB).
Nearby
Substances next to Indium phosphide
Keep going: substances starting with I, or search the whole database by name, CAS number, pictogram or signal word.