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- UN_number abstract "UN numbers or UN IDs are four-digit numbers that identify hazardous substances, and articles (such as explosives, flammable liquids, toxic substances, etc.) in the framework of international transport. Some hazardous substances have their own UN numbers (e.g. acrylamide has UN2074), while sometimes groups of chemicals or products with similar properties receive a common UN number (e.g. flammable liquids, not otherwise specified, have UN1993). A chemical in its solid state may receive a different UN number than the liquid phase if their hazardous properties differ significantly; substances with different levels of purity (or concentration in solution) may also receive different UN numbers.UN numbers range from UN0001 to about UN3506 and are assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods. They are published as part of their Recommendations on the Transport of Dangerous Goods, also known as the Orange Book. These recommendations are adopted by the regulatory organization responsible for the different modes of transport.There is no UN number allocated to non-hazardous substances. These will simply not have a UN number.For more details, see List of UN Numbers.NA numbers (North America), also known as DOT numbers are issued by the United States Department of Transportation and are identical to UN numbers, except that some substances without a UN number may have an NA number. These additional NA numbers use the range NA8000 - NA9999.Associated with each UN number is a hazard identifier, which encodes the general hazard class and subdivision (and, in the case of explosives, their compatibility group). For instance, the hazard identifier of acrylamide is 6.1 and the one of cigarette lighters is 2.1. If a substance poses several dangers, then subsidiary risk identifiers may be specified. It is not possible to deduce the hazard class(es) of a substance from its UN number: they have to be looked up in a table.".
- UN_number wikiPageExternalLink id.aspx.
- UN_number wikiPageExternalLink ERG2012.pdf.
- UN_number wikiPageExternalLink danger.html.
- UN_number wikiPageExternalLink 12_e.html.
- UN_number wikiPageExternalLink www.unnumber.net.
- UN_number wikiPageID "178258".
- UN_number wikiPageRevisionID "589555080".
- UN_number hasPhotoCollection UN_number.
- UN_number subject Category:Chemical_numbering_schemes.
- UN_number subject Category:Lists_of_UN_numbers.
- UN_number type Abstraction100002137.
- UN_number type Amount105107765.
- UN_number type Attribute100024264.
- UN_number type Magnitude105090441.
- UN_number type Number105121418.
- UN_number type Property104916342.
- UN_number type UNNumbers.
- UN_number comment "UN numbers or UN IDs are four-digit numbers that identify hazardous substances, and articles (such as explosives, flammable liquids, toxic substances, etc.) in the framework of international transport. Some hazardous substances have their own UN numbers (e.g. acrylamide has UN2074), while sometimes groups of chemicals or products with similar properties receive a common UN number (e.g. flammable liquids, not otherwise specified, have UN1993).".
- UN_number label "Número ONU".
- UN_number label "Stofidentificatienummer".
- UN_number label "UN number".
- UN_number label "UN-Nummer".
- UN_number label "Номер ООН".
- UN_number label "رقم يو إن".
- UN_number label "国連番号".
- UN_number label "联合国危险货物编号".
- UN_number sameAs UN_kód.
- UN_number sameAs UN-Nummer.
- UN_number sameAs Número_ONU.
- UN_number sameAs 国連番号.
- UN_number sameAs 국제_연합_번호.
- UN_number sameAs Stofidentificatienummer.
- UN_number sameAs m.01880d.
- UN_number sameAs Q908597.
- UN_number sameAs Q908597.
- UN_number sameAs UN_number.
- UN_number wasDerivedFrom UN_number?oldid=589555080.
- UN_number isPrimaryTopicOf UN_number.