Übersetzung für "Chrysen" in Englisch

This is due to the proportionally higher presence of benz(a)anthracene and chrysene which can not be easily removed during refinement of coconut oil.

The four polycyclic aromatic hydrocarbons to which these criteria apply are benzo(a)pyrene, benz(a)anthracene, benzo(b)fluoranthene and chrysene.

The European Union Reference Laboratory for Polycyclic Aromatic Hydrocarbons (EU-RL PAH) in collaboration with the national reference laboratories carried out a survey among official control laboratories to assess which analytical performance criteria would be achievable for benzo(a)pyrene, benz(a)anthracene, benzo(b)fluoranthene and chrysene in relevant food matrices.

Benzo(a)pyrene, Chrysene, Benz(a)anthracene, benzo(b)fluoranthene.

Benzo(a)pyrene, Chrysene, Benz(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(g,h,i)perylene, dibenz(a,h)anthracene and indeno(1,2,3-c,d)pyrene.

As a consequence Commission Regulation (EU) No 835/2011 [4] amended Regulation (EC) No 1881/2006 in order to set maximum levels for the sum of four polycyclic aromatic hydrocarbons (benzo(a)pyrene, benz(a)anthracene, benzo(b)fluoranthene and chrysene).

New maximum levels for the sum of four substances (PAH4) (benzo(a)pyrene, benz(a)anthracene, benzo(b)fluoranthene and chrysene) should be introduced, whilst maintaining a separate maximum level for benzo(a)pyrene.

For R: a nitrophenyl radical, which can be substituted by a halogen atom, a trifluoromethyl group, a carboxyl group, a methoxy group, a sulfonic acid group or a cyano group, a dimethoxycarbonylphenyl group, a pyridine radical, a nitrobenzothiazole radical or a pyrazine, triazole, benzopyrazole, chrysene, naphthyl, methoxynaphthyl, azulene or aminocoumarin radical, it being possible for the radicals to be substituted.

U.S. Pat. No. 3,026,263 describes, as heat stabilizers for silicone oils, combinations comprising an N-aryl-2-naphthylamine or an acridine having an at least tricyclic aromatic having a singlet-triplet excitation energy below 20,000 cm-1, such as anthracene, benzanthracene, chrysene and pyrene.

U.S. Pat. No. 6,087,434 moreover discloses a pigment preparation which comprises a carbon black with less than 10 ppm content of PAHs, examples being compounds such as naphthalene, fluorene, fluoranthene, pyrene, chrysene, benzopyrene and the like, and with specific oxygen content of from 0.2 to 0.4 mg/m 2 .

The four PACs are benzo(a)pyrene, benzo(a)anthracene, Benzo(b)fluoranthene and chrysene.

The at least one sensitizer can be selected from a group comprising organic dyes such as eosin, aromatic ketones, such as for example benzophenone or thioxanthone, condensed aromatic compounds, such as for example anthracene or chrysene, inorganic pigments such as zinc phthalocyanine or titanium oxide, as well as mixtures thereof, as said compounds, in particular with the used photoinitiator(s), exhibit a suitable interaction.

The aromatic or heteroaromatic ring system particularly preferably includes one or more aryl or heteroaryl groups selected from benzene, naphthalene, anthracene, phenanthrene, pyrene, chrysene, benzanthracene, tetracene, pentacene, furan, benzofuran, thiophene, benzothiophene, pyrrole, indole, isoindole, carbazole, pyridine, quinoline, isoquinoline, pyrazole, imidazole, benzimidazole, pyridazine, pyrimidine, pyrazine, triazole, benzotriazole and triazine, each of which may be substituted by one or more radicals R 3 .

Ar 5 is particularly preferably selected from the group consisting of naphthalene, anthracene, phenanthrene, pyrene, benzanthracene and chrysene, each of which may be substituted by one or more radicals R 1 .

During combustion at glow point or carbonization of the tobacco, not only nicotine but also other substances are released or produced, which are frequently harmful to health, such as tar, compounds that contain arsenic and cadmium, as well as carcinogenic compounds such as hydrazine, chrysene, formaldehyde, nitrosamines, and the like.

Ar 4 and Ar 6 are particularly preferably selected, identically or differently on each occurrence, from the group consisting of benzene, pyridine, pyrazine, pyridazine, pyrimidine, triazine, naphthalene, quinoline, isoquinoline, anthracene, phenanthrene, phenanthroline, pyrene, benzanthracene and chrysene, each of which may be substituted by one or more radicals R 1 .

The aromatic or heteroaromatic ring system is particularly preferably phenyl, biphenyl, triphenyl, naphthyl, anthracene, binaphthyl, phenanthrene, dihydrophenanthrene, pyrene, dihydropyrene, chrysene, perylene, tetracene, benzopyrene and fluorene.

Also known from U.S. Pat. No. 6,087,434 is a pigment preparation which comprises a carbon black with PAH content less than 10 ppm, for example compounds such as naphthalene, fluorathene, fluoranthine, pyrene, chrysene, benzopyrenes and the like, and has a specific oxygen content of 0.2-0.4 mg/m 2 .

More preferably, at least one of the substituents Y contains at least one fused polycyclic aromatic ring system, in particular naphthalene, anthracene, phenanthrene, pyrene, dihydropyrene, chrysene, naphthacene, pentacene or perylene, most preferably naphthalene, anthracene, phenanthrene or pyrene, or at least one aza heterocycle, in particular pyridine, pyrazine, pyrimidine, pyridazine, quinoline, isoquinoline, quinoxaline or phenanthroline.

Preferred aromatic ring systems are, for example, phenyl, biphenyl, triphenyl, naphthyl, anthracyl, binaphthyl, phenanthryl, dihydrophenanthryl, pyrene, dihydropyrene, chrysene, perylene, tetracene, pentacene, benzopyrene, fluorene and indene.

Preferred aromatic ring systems are, for example, phenyl, biphenyl, triphenyl, naphthyl, anthracene, binaphthyl, phenanthrene, dihydrophenanthrene, pyrene, dihydropyrene, chrysene, perylene, tetracene, benzopyrene, fluorene, indene, indenofluorene and spirobifluorene.

Examples of fused aryl or heteroaryl groups are naphthalene, quinoline, benzothiophene, anthracene, phenanthrene, phenanthroline, pyrene, perylene, chrysene, acridine, etc., while biphenyl, for example, is not a fused aryl group since there is no common edge between the two ring systems therein.

Preferred aromatic ring systems are, for example, benzene, biphenyl, terphenyl, naphthalene, anthracene, binaphthyl, phenanthrene, benzanthracene, dihydrophenanthrene, pyrene, dihydropyrene, chrysene, perylene, tetracene, pentacene, benzopyrene, fluorene, spirobifluorene and indene.

The symbols Ar 1, Ar 2 and Ar 3 particularly preferably stand on each occurrence, identically or differently, for an aryl group having 6 to 18 aromatic ring atoms, in particular selected from benzene, naphthalene, anthracene, phenanthrene, fluoranthene, naphthacene, benzanthracene, chrysene, pyrene, benzofluoranthene and triphenylene.