Substance profile
α,α-dimethylbenzyl hydroperoxide
α,α-dimethylbenzyl hydroperoxide is a colorless to pale-yellow liq.
01 · Identification
What α,α-dimethylbenzyl hydroperoxi… is
α,α-dimethylbenzyl hydroperoxide is a colorless to pale-yellow liq. Its molecular formula is C9H12O2 and its molecular weight is 152.19 g/mol. It boils at 153 °C, melts at -9 °C.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 2nd degree.
02 · Identifiers
α,α-dimethylbenzyl hydroperoxi… identifiers and molecular data
α,α-dimethylbenzyl hydroperoxi… CAS number and EC number
α,α-dimethylbenzyl hydroperoxi… molecular formula and molecular weight
Other names for α,α-dimethylbenzyl hydroperoxi…
- cumene hydroperoxide
03 · GHS classification
α,α-dimethylbenzyl hydroperoxi… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
α,α-dimethylbenzyl hydroperoxi… pictograms and signal word
α,α-dimethylbenzyl hydroperoxi… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Organic peroxides or Self-reactive substances and mixtures | Category Type C and D or Type E and F | H242 | GHS02 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 3 | H331 | GHS06 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
| Specific target organ toxicity - repeated exposure GHS chapter 3.9 | Category 2 | H373 | GHS08 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
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.
α,α-dimethylbenzyl hydroperoxi… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H242 | Heating may cause a fire. |
| H331 | Toxic if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H373 | May cause 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>. |
| H314 | Causes severe skin burns and eye damage. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to α,α-dimethylbenzyl…. 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 α,α-dimethylbenzyl…
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 α,α-dimethylbenzyl… 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
α,α-dimethylbenzyl hydroperoxi… precautionary statements
CLP Annex VI assigns 16 precautionary statements to α,α-dimethylbenzyl…. 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.
Disposal
What has to happen to the contents and the empty container.
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
α,α-dimethylbenzyl hydroperoxi… 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 | α, α-диметилбензилхидропероксид куменхидропероксид |
| Spanish español | Hidroperóxido de α, α-dimetilbencilo hidroperóxido de cumeno |
| Czech čeština | (2-fenylpropan-2-yl)hydroperoxid kumenhydroperoxid |
| Danish dansk | α, α-dimethylbenzylhydroperoxid cumenhydroperoxid |
| German Deutsch | α, α-Dimethylbenzylhydroperoxid Cumenhydroperoxid |
| Estonian eesti | α, α-dimetüülbensüülvesinikperoksiid kumeenvesinikperoksiid |
| Greek ελληνικά | α, α-διμεθυλοβενζολο-υδροϋπεροξείδιο υδροϋπεροξείδιο του κουμενίου |
| English English | α, α-dimethylbenzyl hydroperoxide cumene hydroperoxide |
| French français | hydroperoxyde de α, α-diméthylbenzyle hydroperoxyde de cumène |
| Croatian hrvatski | α, α -dimetilbenzil hidroperoksid kumen-hidroperoksid |
| Italian italiano | α, α-dimetilbenzil idroperossido cumene idroperossido |
| Latvian latviešu | α, α-dimetilbenzilhidroperoksīds kumolhidroperoksīds |
| Lithuanian lietuvių | α-α-dimetilbenzilo hidroperoksidas kumeno hidroperoksidas |
| Hungarian magyar | α, α-dimetilbenzil-hidroperoxid kumol-hidroperoxid |
| Maltese Malti | α, α-idroperossidu tad-dimetilbenżil idroperossidu tal-kumen |
| Dutch Nederlands | α, α-dimethylbenzylhydroperoxide cumeenhydroperoxide |
| Polish polski | wodoronadtlenek α, α-dimetylobenzylu wodoronadtlenek kumenu |
| Portuguese português | hidroperóxido de α, α-dimetilbenzilo hidroperóxido de cumeno |
| Romanian română | hidroperoxid de α, α-dimetil-benzil hidroperoxid de cumen |
| Slovak slovenčina | 2-fenyl-2-hydroperoxypropán hydroperoxid kuménu |
| Slovenian slovenščina | α, α-dimetilbenzil hidroperoksid kumen hidroperoksid |
| Finnish suomi | α, α-dimetyylibentsyylihydroperoksidi kumeenivetyperoksidi |
| Swedish svenska | α, α-dimetylbensylhydroperoxid kumenhydroperoxid |
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
α,α-dimethylbenzyl hydroperoxi… GHS label elements
Everything CLP Annex VI fixes for α,α-dimethylbenzyl…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
α,α-dimethylbenzyl hydroperoxi…
- Heating may cause a fire.
- Toxic if inhaled.
- Harmful in contact with skin.
- Harmful if swallowed.
- May cause 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>.
- Causes severe skin burns and eye damage.
- Toxic to aquatic life with long lasting effects.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention if you feel unwell.
- Rinse mouth.
- Do NOT induce vomiting.
- Wash with plenty of water/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open α,α-dimethylbenzyl… in the GHS label constructor →
07 · Health hazards
α,α-dimethylbenzyl hydroperoxi… health hazards and exposure limits
α,α-dimethylbenzyl hydroperoxi… hazard summary
Highly corrosive to skin; [Quick CPC] A corrosive substance that can cause pulmonary edema; [ICSC] Rats exposed to 31.5 ppm for seven 5-hr periods had lacrimation, labored breathing, tremors, and histological evidence of lung damage. [AIHA]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
α,α-dimethylbenzyl hydroperoxi… carcinogenicity classification
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
α,α-dimethylbenzyl hydroperoxi… 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.
α,α-dimethylbenzyl hydroperoxi… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 153 °C (307.4 °F) | HSDB | |
| 153 °C (307.4 °F) | at 760 mmHg | DOE PAC | |
| 127.22 °C (261 °F) | decomposes | CAMEO |
α,α-dimethylbenzyl hydroperoxi… melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -9 °C (15.8 °F) | ICSC | |
| -40 °C (-40 °F) | below this value | CAMEO |
α,α-dimethylbenzyl hydroperoxi… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.06 g/cm³ | ICSC | |
| 1.03 g/cm³ | at 20 °C | HSDB | |
| 1.03 g/cm³ | at 25 °C | CAMEO |
α,α-dimethylbenzyl hydroperoxi… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Slightly soluble in water | HSDB | |
| Readily soluble in alcohol, acetone, esters, hydrocarbons, and chlorinated hydrocarbons. | HSDB | ||
| In water, 1.39X10+4 mg/L at 25 °C | at 25 °C | HSDB |
α,α-dimethylbenzyl hydroperoxi… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.6 mmHg | at 20 °C, for 80-85% by weight | CAMEO |
| 0.24 mmHg | at 20 °C | ICSC | |
| 0.0033 mmHg | at 25 °C | HSDB |
α,α-dimethylbenzyl hydroperoxi… flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 79.44 °C (175 °F) | HSDB | |
| 57.22 °C (135 °F) | CAMEO | ||
| 79 °C (174.2 °F) | ICSC |
α,α-dimethylbenzyl hydroperoxi… autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 148.89 °C (300 °F) | HSDB |
α,α-dimethylbenzyl hydroperoxi… lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 0.9 % by volume | HSDB |
α,α-dimethylbenzyl hydroperoxi… upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 6.5 % by volume | HSDB |
α,α-dimethylbenzyl hydroperoxi… vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 5 (air = 1) | CAMEO | |
| 5.4 (air = 1) | ICSC |
α,α-dimethylbenzyl hydroperoxi… critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 331.85 °C (629.3 °F) | HSDB |
α,α-dimethylbenzyl hydroperoxi… corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Reactive with metal-containing materials. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
α,α-dimethylbenzyl… 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.
α,α-dimethylbenzyl hydroperoxi… fire potential
Flammable when exposed to heat or flame.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
α,α-dimethylbenzyl hydroperoxi… storage and handling
α,α-dimethylbenzyl hydroperoxi… safe storage
Separated from combustible substances, reducing agents, mineral acids and food and feedstuffs. Cool. Dry. Store in an area without drain or sewer access.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
α,α-dimethylbenzyl hydroperoxi… incompatible materials
A mixture of dimeric and trimeric dibromo compounds with the hydroperoxide in benzene may react vigorously or explode if the solution is heated to concentrate it.
Source: Hazardous Substances Data Bank (HSDB)
α,α-dimethylbenzyl hydroperoxi… reactivity
CUMENE HYDROPEROXIDE is a strong oxidizing agent. May react explosively upon contact with reducing reagents. Violent reaction occurs upon contact with copper, copper alloys, lead alloys, and mineral acids. Contact with charcoal powder gives a strong exothermic reaction. Decomposes explosively with sodium iodide [Chem. Eng. News, 1990, 68(6), 2]. Can be exploded by shock or heat [Sax, 2 ed., 1965, p. 643]. May ignite organic materials.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check α,α-dimethylbenzyl… in the storage compatibility matrix →
11 · Questions
α,α-dimethylbenzyl hydroperoxi… — frequently asked questions
What is the CAS number of α,α-dimethylbenzyl hydroperoxi…?
The CAS number of α,α-dimethylbenzyl hydroperoxi… is 80-15-9. Its EC number is 201-254-7.
What is the chemical formula of α,α-dimethylbenzyl hydroperoxi…?
The molecular formula of α,α-dimethylbenzyl hydroperoxi… is C9H12O2 and its molecular weight is 152.19 g/mol.
What does a α,α-dimethylbenzyl hydroperoxi… label have to show?
Under CLP Annex VI the label for α,α-dimethylbenzyl hydroperoxi… carries the pictograms Flame, Skull and crossbones, Health hazard, Corrosion and Environment and the signal word is Danger.
Is α,α-dimethylbenzyl hydroperoxi… flammable?
Yes. CLP Annex VI assigns α,α-dimethylbenzyl hydroperoxi… H242 — heating may cause a fire. The flash point reported for it is 79.44 °C (175 °F) (HSDB).
Is α,α-dimethylbenzyl hydroperoxi… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for α,α-dimethylbenzyl hydroperoxi…. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health. IARC places it in Group 2B: possibly carcinogenic to humans.
What is the boiling point of α,α-dimethylbenzyl hydroperoxi…?
The boiling point reported for α,α-dimethylbenzyl hydroperoxi… is 153 °C (307.4 °F) (HSDB).
What is the melting point of α,α-dimethylbenzyl hydroperoxi…?
The melting point reported for α,α-dimethylbenzyl hydroperoxi… is -9 °C (15.8 °F) (ICSC).
Nearby
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