List of UN Numbers 2501 to 2600
Encyclopedia

UN 2501 to UN 2600

UN Number Class Proper Shipping Name
UN 2501 6.1 Tris-(1-aziridinyl)phosphine oxide, solution
UN 2502 8 Valeryl chloride
UN 2503 8 Zirconium tetrachloride
UN 2504 6.1 Tetrabromoethane
Tetrabromoethane
Tetrabromoethane is a halogenated hydrocarbon, chemical formula C2H2Br4. Although three bromine atoms may bind to one of the carbon atoms creating 1,1,1,2-tetrabromoethane this is not thermodynamically favorable, so in practice tetrabromoethane is equal to 1,1,2,2-tetrabromoethane, where each...

UN 2505 6.1 Ammonium fluoride
Ammonium fluoride
Ammonium fluoride is the inorganic compound with the formula NH4F. It crystallizes as small colourless prisms, having a sharp saline taste, and is exceedingly soluble in water.-Crystal structure:...

UN 2506 8 Ammonium hydrogen sulfate
UN 2507 8 Chloroplatinic acid, solid
UN 2508 8 Molybdenum pentachloride
UN 2509 8 Potassium hydrogen sulfate
Potassium hydrogen sulfate
Potassium bisulfate is the potassium salt of bisulfate anion, with the molecular formula . This compound is commonly used in the conversion of tartrates to bitartrates in wine. Potassium bisulfate is also used as a disintegrating agent in analytical chemistry....

UN 2511 8 2-Chloropropionic acid
2-Chloropropionic acid
2-Chloropropionic acid is the chemical compound with the formula CH3CHClCO2H. This colorless liquid is the simplest chiral chlorocarboxylic acid, and it is noteworthy for being readily available as a single enantiomer.-Preparation:...

UN 2512 6.1 Aminophenol
Aminophenol
4-Aminophenol is the organic compound with the formula H2NC6H4OH. Typically available as a white powder, it is commonly used as a developer in black-and-white film, marketed under the name Rodinal....

s (o-; m-; p-)
UN 2513 8 Bromoacetyl bromide
UN 2514 3 Bromobenzene
UN 2515 6.1 Bromoform
Bromoform
Bromoform is a pale yellowish liquid with a sweet odor similar to chloroform, a halomethane or haloform. Its refractive index is 1.595 . Bromoform is produced naturally by phytoplankton and seaweeds in the ocean and this is thought to be the predominant source to the environment...

UN 2516 6.1 Carbon tetrabromide
UN 2517 2 1-Chloro-1,1-difluoroethane
1-Chloro-1,1-difluoroethane
1-Chloro-1,1-difluoroethane, also known by trade names including Freon 142b is a haloalkane with the chemical formula CH3CClF2. It is primarily used as arefrigerant....

 or Refrigerant gas R 142b
UN 2518 6.1 1,5,9-Cyclododecatriene
UN 2520 3 Cyclooctadiene
Cyclooctadiene
A cyclooctadiene is a cyclic diene with the formula C8H12. Focusing only on cis derivatives, four isomers are possible: 1,2, which is an allene, 1,3-, 1,4-, and 1,5-. Commonly encountered isomers are 1,3-cyclooctadiene and 1,5-cyclooctadiene, which is used as a ligand for transition...

s
UN 2521 6.1 Diketene
Diketene
Diketene is an organic compound formed by dimerization of ketene. Diketene is a member of the oxetane family. It is used as a chemical reagent in organic chemistry. It is a colorless liquid and heating regenerates the ketene monomer...

, inhibited
UN 2522 6.1 2-Dimethylaminoethyl methacrylate
UN 2524 3 Ethyl orthoformate
UN 2525 6.1 Ethyl oxalate
UN 2526 3 Furfurylamine
Furfurylamine
Furfurylamine is an aromatic amine. Its chemical formula is C5H7NO. Industrially, it is synthesized from furfural....

UN 2527 3 Isobutyl acrylate, inhibited
UN 2528 3 Isobutyl isobutyrate
UN 2529 3 Isobutyric acid
Isobutyric acid
Isobutyric acid, also known as 2-methylpropanoic acid, is a carboxylic acid with structural formula 2-CH-COOH. It is found in the free state in carobs and in the root of Arnica dulcis, and as an ethyl ester in croton oil....

UN 2530 3 Isobutyric anhydride
UN 2531 8 Methacrylic acid
Methacrylic acid
Methacrylic acid, abbreviated MAA, is an organic compound. This colourless, viscous liquid is a carboxylic acid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents. Methacrylic acid is produced industrially on a large scale as a precursor to its...

, inhibited
UN 2533 6.1 Methyl trichloroacetate
UN 2534 2 Methylchlorosilane
UN 2535 3 4-Methylmorpholine or n-methylmorpholine
UN 2536 3 Methyltetrahydrofuran
UN 2538 4.1 Nitronaphthalene
UN 2541 3 Terpinolene
UN 2542 6.1 Tributylamine
UN 2545 4.2 Hafnium
Hafnium
Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869. Hafnium was the penultimate stable...

 powder, dry
UN 2546 4.2 Titanium
Titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....

 powder, dry
UN 2547 5.1 Sodium superoxide
Sodium superoxide
Sodium superoxide is the inorganic compound with the formula NaO2. This yellow-orange solid is a salt of the superoxide anion. It is an intermediate in the oxidation of sodium by oxygen....

UN 2548 2 Chlorine pentafluoride
Chlorine pentafluoride
Chlorine pentafluoride is an interhalogen compound with formula ClF5. It was first synthesized in 1963.Its square pyramidal structure with C4v symmetry was confirmed by its high resolution19F NMR spectrum.-Preparation:...

UN 2552 6.1 Hexafluoroacetone
Hexafluoroacetone
Hexafluoroacetone is a chemical compound with the formula CF3-CO-CF3. It is structurally similar to acetone, however its reactivity is markedly different. It comes in the form of a colourless, hygroscopic, nonflammable, highly reactive gas characterized by a musty odour...

 hydrate
UN 2554 3 Methyl allyl chloride
UN 2555 4.1 Nitrocellulose
Nitrocellulose
Nitrocellulose is a highly flammable compound formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it is also known as guncotton...

 with water with not less than 25 percent water, by mass
UN 2556 4.1 Nitrocellulose, with alcohol with not less than 25 percent alcohol, by mass, and with not more than 12.6 percent nitrogen, by dry mass
UN 2557 4.1 Nitrocellulose, with not more than 12.6 percent nitrogen, by dry mass, or Nitrocellulose mixture with pigment or Nitrocellulose mixture with plasticizer or Nitrocellulose mixture with pigment and plasticizer
UN 2558 6.1 Epibromohydrin
UN 2560 3 2-Methylpentan-2-ol
UN 2561 3 3-Methyl-1-butene
UN 2564 8 Trichloroacetic acid
Trichloroacetic acid
Trichloroacetic acid is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms....

, solution
UN 2565 8 Dicyclohexylamine
UN 2567 6.1 Sodium pentachlorophenate
UN 2570 6.1 Cadmium
Cadmium
Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Similar to zinc, it prefers oxidation state +2 in most of its compounds and similar to mercury it shows a low...

 compounds
UN 2571 8 Alkylsulfuric acids
UN 2572 6.1 Phenylhydrazine
Phenylhydrazine
Phenylhydrazine is the chemical compound with the formula C6H5NHNH2. Organic chemists abbreviate the compound as PhNHNH2.- Chemical properties :...

UN 2573 5.1 Thallium chlorate
UN 2574 6.1 Tricresyl phosphate
Tricresyl phosphate
Tricresyl phosphate, abbreviated TCP, is an organophosphate compound that is used as a plasticizer and diverse other applications. It is a colourless, viscous liquid, although commercial samples are typically yellow...

 with more than 3 percent ortho isomer
UN 2576 8 Phosphorus oxybromide, molten
UN 2577 8 Phenylacetyl chloride
UN 2578 8 Phosphorus trioxide
Phosphorus trioxide
Phosphorus trioxide is the chemical compound with the molecular formula P4O6. This compound was discovered by Neil G. Mehta . Although it should properly be named tetraphosphorus hexoxide, the name phosphorus trioxide preceded the knowledge of the compound's molecular structure, and its usage...

UN 2579 8 Piperazine
Piperazine
Piperazine is an organic compound that consists of a six-membered ring containing two opposing nitrogen atoms. Piperazine exists as small alkaline deliquescent crystals with a saline taste....

UN 2580 8 Aluminum bromide, solution
UN 2581 8 Aluminum chloride, solution
UN 2582 8 Ferric chloride, solution
UN 2583 8 Alkyl sulfonic acids, solid or Aryl sulfonic acids, solid with more than 5 percent free sulfuric acid
UN 2584 8 Alkyl sulfonic acids, liquid or Aryl sulfonic acids, liquid with more than 5 percent free sulfuric acid
UN 2585 8 Alkyl sulfonic acids, solid or Aryl sulfonic acids, solid with not more than 5 percent free sulfuric acid
UN 2586 8 Alkyl sulfonic acids, liquid or Aryl sulfonic acids, liquid with not more than 5 percent free sulfuric acid
UN 2587 6.1 Benzoquinone
UN 2588 6.1 Pesticide
Pesticide
Pesticides are substances or mixture of substances intended for preventing, destroying, repelling or mitigating any pest.A pesticide may be a chemical unicycle, biological agent , antimicrobial, disinfectant or device used against any pest...

s, solid, toxic, n.o.s.
UN 2589 6.1 Vinyl chloroacetate
UN 2590 9 White asbestos (chrysotile
Chrysotile
Chrysotile or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the asbestos in place in the United States and a similar proportion in other countries. It is a soft, fibrous silicate mineral in the serpentine group of phyllosilicates; as such, it...

, actinolite
Actinolite
Actinolite is an amphibole silicate mineral with the chemical formula .-Etymology:The name actinolite is derived from the Greek word aktis , meaning "beam" or "ray", because of the mineral's fibrous nature...

, anthophyllite
Anthophyllite
Anthophyllite is an amphibole mineral: 7Si8O222, magnesium iron inosilicate hydroxide. Anthophyllite is polymorphic with cummingtonite. Some forms of anthophyllite are lamellar or fibrous and are used as asbestos...

, tremolite
Tremolite
Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2Mg5Si8O222. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades...

)
UN 2591 2 Xenon
Xenon
Xenon is a chemical element with the symbol Xe and atomic number 54. The element name is pronounced or . A colorless, heavy, odorless noble gas, xenon occurs in the Earth's atmosphere in trace amounts...

, refrigerated liquid (cryogenic liquids)
UN 2599 2 Chlorotrifluoromethane
Chlorotrifluoromethane
Chlorotrifluoromethane, R-13, CFC-13, or Freon 13, is a non-flammable, non-corrosive chlorofluorocarbon and also a mixed halomethane. It is used as a refrigerant, however, due to concerns about its ozone-depleting potential, its use has been phased out due to the Montreal Protocol.-Physical...

 and trifluoromethane azeotropic mixture or Refrigerant gas R 503 with approximately 60 percent chlorotrifluoromethane
UN 2600 2 Carbon monoxide
Carbon monoxide
Carbon monoxide , also called carbonous oxide, is a colorless, odorless, and tasteless gas that is slightly lighter than air. It is highly toxic to humans and animals in higher quantities, although it is also produced in normal animal metabolism in low quantities, and is thought to have some normal...

 and hydrogen
Hydrogen
Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly...

mixture, compressed
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