BLACK PN

CAS Number: 2519-30-4
EC Number: 219-746-5
E number: E151 (colours)
Chemical formula: C28H17N5Na4O14S4
Molar mass: 867.66 g·mol−1


Brilliant Black BN, Brilliant Black PN, Brilliant Black A, Black PN, Food Black 1, Naphthol Black, C.I. Food Black 1, or C.I. 28440, is a synthetic black diazo dye. 
Black BN is soluble in water. 
Black BN usually comes as tetrasodium salt. 
Black BN has the appearance of solid, fine powder or granules. 
Calcium and potassium salts are allowed as well.
When used as a food dye, Black BNs E number is E151. 

Black BN is used in food decorations and coatings, desserts, sweets, ice cream, mustard, red fruit jams, soft drinks, flavored milk drinks, fish paste, lumpfish caviar and other foods.
E151 has been banned in the United States, Switzerland, Japan.
Black BN is approved in the European Union.
Black BN was banned in Norway until 2001 when Black BN was unbanned due to trade relationships with other countries.
Black BN is used for staining animal by-products in category 2.
Black PN is a synthetic dye used in foods and cosmetics. 
Black BN is used as a modulator of adenosine A1/A3 receptors as potential therapeutic agents for conditions involving metabolic stress.

Physical Description of Black BN:
Brilliant black is a bis-azo dye that provides a blackish violet shade in applications.

Common Uses of Black BN:
Typical applications include beverages, confectionery, bakery, dairy fats and oil, meat, seafood, snacks, dry mixes and seasonings, fruit preparation, convenient food, and flavors.

Black PN Food Color or Food Additive comprises mainly of naphthalene; 1,7-disulfonate; tetrasodium-4-acetamido-5-hydroxy-6-[7-sulfonato-4'-(4-sulfonatophenylazo)-1-naphthylazo]as well as other subsidiary coloring matter that can be used in combination with sodium chloride/sodium sulfate as principal uncolored component. 
Black PN is described as the sodium salt.
The calcium and the potassium salt are also permitted. 
The organic compounds other than coloring matters Black BN contains include 4-amino-5-hydroxynaphthalene-1,7-disulfonic acid; 4-acetamido-5-hydroxynaphthalene-1,7-disulfonic acid; 4,4'-diazoaminodi-(benzenesulfonic acid) and 8-aminonaphthalene-2-sulfonic acid which in total is not more than 0.8%.

IUPAC name
Tetrasodium (6Z)-4-acetamido-5-oxo-6-[[7-sulfonato-4-(4-sulfonatophenyl)azo-1-naphthyl]hydrazono]naphthalene-1,7-disulfonate

Other names
C.I. Food Black 1; 1743 Black; Black PN; Blue Black BN; Brilliant Acid Black; C.I. 28440; Certicol Black PNW; Cilefa Black B; E 151; Edicol Supra Black BN; Hexacol Black PN; L Black 8000; Melan Black; Xylene Black F

CAS Number: 2519-30-4
ChemSpider: 21159661
ECHA InfoCard: 100.017.951 
EC Number: 219-746-5
E number: E151 (colours)
PubChem CID: 5359750
UNII: 2WPR32U0CP 
CompTox Dashboard (EPA): DTXSID2020183

Black BN was evaluated by JECFA in 1974 and allocated a temporary ADI of 0-2.5 mg/kg bw; further work required included metabolic studies and adequate reproductive and embryotoxicity including teratological studies. 
The Committee reviewed the position again in 1978 and the required data was not available. 
In addition, the Committee felt that the etiology and pathology of intestinal cystsobserved in a 90-day study in pigs should be determined.
Since the previous review further data have become available and is incorporated into this monograph.

Brilliant Black PN consists of tetrasodium 4-(acetylamino)-5-hydroxy-6-[2-[7-sulfo-4-[2-(4-sulfophenyl)2pprox.2]-1-naphthalenyl]2pprox.2]-1,7-naphthalenedisulfonate and subsidiary colouring matters, as well as sodium chloride and/or sodium sulfate as the principal uncoloured components. 
Brilliant Black PN is manufactured by diazotizing 4-aminobenzenesulfonic acid (sulfanilic acid), coupling with 8-aminonaphthalene-2-sulfonic acid (1,7-Cleve’s acid), diazotizing the product, and coupling with 4-(acetylamino)-5-hydroxy-1,7- naphthalenedisulfonic acid (N-acetyl K acid).
Brilliant Black PN may be converted to the corresponding aluminium lake in which case only the requirements in the General Specifications for Aluminium Lakes of Colouring Matters apply.

Black PN
2519-30-4
Brilliant Black BN
Food black 1
Brilliant Black
Blue Black BN
C.I. FOOD BLACK 1
Brilliant Black A
E 151
Brilliant Acid Black BNA Export
UNII-2WPR32U0CP
Brilliant Acid Black BN Extra Pure A
2WPR32U0CP
C.I. 28440
Formoterol fumarate dihydrate
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonateMelan Black

Chemical Name: Black PN (~80%)
Synonyms: 4-(Acetylamino)-5-hydroxy-6-[2-[7-sulfo-4-[2-(4-sulfophenyl)diazenyl]-1-naphthalenyl]diazenyl]-1,7-naphthalenedisulfonic Acid Sodium Salt (1:4); 4-(Acetylamino)-5-hydroxy-6-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthalenyl]azo]-, tetrasodium Salt 1,7-Naphthalenedisulfonic Acid; Brilliant Black BN; C.I. Food Black 1; 1743 Black; Black PN; Blue Black BN; Brilliant Acid Black BN Extra Pure A; Brilliant Acid Black BNA Export; Brilliant Black 1; Brilliant Black 80; Brilliant Black A; Brilliant Black N; Brilliant Black NAF; Brilliant Black NFQ; Brilliant Black PN; C.I. 28440; Certicol Black PNW; Cilefa Black B; E 151; Edicol Supra Black BN; Food Black 1; Hexacol Black PN; L Black 8000; Melan Black; Tetrasodium 2-[4-(p-Sulfophenylazo)-7-sulfo-1-naphthylazo]-8-acetamido-1-naphthol-3,5-disulfonate;
CAS Number: 2519-30-4
Molecular Formula: C₂₈H₁₇N₅Na₄O₁₄S₄
Appearance: Black Solid
Melting Point: >300°C
Molecular Weight: 867.68
Storage: Refrigerator
Solubility:
DMSO (Slightly), Methanol (Slgihtly, Heated), Water (Slightly)
Category: 
Standards; Pharmaceutical/API Drug Impurities/Metabolites;

Black BN Applications:
Black PN is a synthetic dye used in foods and cosmetics. 
Black BN used as a modulator of adenosine A1/A3 receptors as potential therapeutic agents for conditions involving metabolic stress. 
Dyes and metabolites, Environmental Testing.

SYNONYMS:  Food Black -1
CHEMICAL NAME: Tetrasodium 4-acetamido-5-hydroxy-6-[7-sulfonato-4- (4-sulfonatophenylazo)-1-naphthylazo] naphthalene-1,7- disulfonate
Color INDEX NO.: 28440
C.I. NAME: --
FDA STATUS: --
CAS NO.: 2519-30-4
EINECS NO.: 219-746-5
EEC NO.: E-151
HUE NAME (FOOD): Black -1
INDIAN STANDARD: No.    -
CLASS: Disazo
TOTAL DYE CONTENT % MIN.: 80

Chemical name Tetrasodium 4-acetamido-5-hydroxy-6-[7-sulfonato-4-(4-sulfonato-phenylazo)-1-naphthylazo]-1,7-naphthalenedisulfonate
Tetrasodium salt of 4-(acetylamino)-5-hydroxy-6-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthalenyl]azo]-1,7-naphthalenedisulfonicacid
Tetrasodium;(6E)-4-acetamido-5-oxo-6-[[7-sulfonato-4-[(4-sulfonatophenyl)2pprox.2]naphthalen-1-yl]hydrazinylidene]naphthalene-1,7-disulfonate

LOSS ON DRYING AT 135 C & SODIUM CHLORIDES & SULPHATES % MAX: 20
WATER INSOLUBLE MATTER % MAX.: 0.2
ETHER EXTRACTS % MAX..: 0.2
SUBSIDIARY DYE % MAX.: 10.0
DYES INTERMIDIATES % MAX.: 0.80
UNSULPHONATED PRIMARY AROMATIC AMINES % MAX.: 0.01
LEAD (AS "Pb") PPM (MAX.): 10.00
ARSENIC (AS "As" PPM (MAX.): 3.00
MERCURY (AS "Hg") PPM (MAX): 1.0
CHROMIUM (AS "Cr") PPM (MAX): 5.0
HEAVY METALS PPM (MAX): 40.00

Black PN comprises mainly of naphthalene; 1,7-disulfonate; tetrasodium-4-acetamido-5-hydroxy-6-[7-sulfonato-4'-(4-sulfonatophenylazo)-1-naphthylazo]as well as other subsidiary coloring matter that can be used in combination with sodium chloride/sodium sulfate as principal uncolored component. 
Black PN is described as the sodium salt.
Black PN is a black dye which is soluble in water. 
Black BN gives blackish violet shade in the applications.
The calcium and the potassium salt are also permitted. 
The organic compounds other than coloring matters Black BN contains include 4-amino-5-hydroxynaphthalene-1,7-disulfonic acid; 4-acetamido-5-hydroxynaphthalene-1,7-disulfonic acid; 4,4'-diazoaminodi-(benzenesulfonic acid) and 8-aminonaphthalene-2-sulfonic acid which in total is not more than 0.8%.

Cilefa Black B
Xylene Black F
Hexacol Black PN
MFCD00078980
Brilliant black 1
1743 Black
Certicol Black PNW
Edicol Supra Black BN
Brilliant Black PN
L-Schwarz 1
Brilliant Black NAF
Brilliant Black N. FQ

Black BN IDENTIFICATION
Solubility (Vol. 4): Soluble in water, sparingly soluble in ethanol.
Spectrophotometry (Vol. 4): Maximum wavelength approximately 572 nm
Determine the UV-visible absorption spectrum of the sample dissolved in water.


E.E.C.No.: E-151
EINECS.: 219-746-5
CAS No.: 2519-30-4
C.I.No.: 28440
Molecular Formula: C28H17N5NA4O14S4
Molecular Weight: 867.69

CI 28440
Noir brillant BN
Noir brillant BN [French]
Brillant Black 1
Brilliantschwarz BN
CERN brilantni PN [Czech]
tetrasodium;4-acetamido-5-hydroxy-6-[[7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonate
Brilliantschwarz BN [German]
CCRIS 113
CERN brilantni PN
CERN potravinarska 1 [Czech]
CERN potravinarska 1
EINECS 219-746-5
C.I. Food Black 1, tetrasodium salt

Black PN finds application in formulating toiletries and personal care products like shampoos, conditioners, bath soaps, hair gels, toothpastes (transparent, opaque, stripes), lotions, deodorants, liquid soaps, hand washes, hair oil, after-shave and skin creams. 
Black BN complies with US FDA, Halal, Kosher, ISI and REACH.
Black BN is black in color and soluble in water. 
Black BN is an EEC lake based color. 
Black PN (Koelow - 082) is used in personal care and cosmetics.

black-pn
WOOL BLACK
C.I. Food Black-1
DTXSID2020183
C28H17N5Na4O14S4
AKOS024319586
AKOS025310995
Brilliant Black BN (C.I. 28440)

What is carbon black? 
A vital component in making many of the products we use every day stronger, deeper in color and longer lasting, carbon black in Black BNs pure form is a fine black powder, essentially composed of elemental carbon. 
Black BN is produced by partial burning and pyrolysis of low-value oil residues at high temperatures under controlled process conditions.
Carbon black is mainly used to strengthen rubber in tires, but can also act as a pigment, UV stabilizer, and conductive or insulating agent in a variety of rubber, plastic, ink and coating applications. 
Apart from tires, other everyday uses of carbon black include hoses, conveyor belts, plastics, printing inks and automotive coatings.

The fundamental properties of carbon black determine application performance. 
These include:
-Particle Size
-Structure
-Porosity
-Surface Chemistry or Surface Activity
-Physical Form

Black BN PARTICLE SIZE
Measured by electron microscopy, this is the fundamental property that has a significant effect on rubber properties, as well as color properties for specialty carbon blacks.
For specialty carbon blacks, smaller particle diameter gives rise to higher surface area and tinting strength. 
High surface area is usually associated with greater jetness, higher conductivity, improved weatherability, and higher viscosity, but requires increased dispersion energy.
For rubber, finer particles lead to increased reinforcement, increased abrasion resistance, and improved tensile strength. 
To disperse finer particles size, however, requires increased mixing time and energy. 
Typical particle sizes range from around 8 nanometers to 100 nanometers for furnace blacks. 
Surface area is utilized in the industry as an indicator of the fineness level of the carbon black and, therefore, of the particle size.

Black BN STRUCTURE
This is a measure of the three-dimensional fusion of carbon black particles to form aggregates, which may contain a large number of particles. 
The shape and degree of branching of the aggregates is referred to as structure.
Highly structured carbon blacks provide higher viscosity, greater electrical conductivity and easier dispersion for specialty carbon blacks. 
Measures of aggregate structure may be obtained from shape distributions from EM analysis, oil absorption (OAN) or void volume analysis.
The structure level of a carbon black ultimately determines its effects on several important in-rubber properties. 
Increasing carbon black structure increases modulus, hardness, electrical conductivity, and improves dispersibility of carbon black, but increases compound viscosity.

Black BN POROSITY
This is a fundamental property of carbon black that can be controlled during the production process. 
Black BN can affect the measurement of surface area providing a total surface area (NSA) larger than the external value (STSA).
Conductive specialty carbon blacks tend to have a high degree of porosity, while an increase in porosity also allows a rubber compounder to increase carbon black loading while maintaining compound specific gravity. 
This leads to an increase in compound modulus and electrical conductivity for a fixed loading.

Black BN SURFACE CHEMISTRY OR SURFACE ACTIVITY
This is a function of the manufacturing process and the heat history of a carbon black and generally refers to the oxygen-containing groups present on a carbon black’s surface.
For specialty carbon blacks, oxidized surfaces improve pigment wetting, dispersion, rheology, and overall performance in selected systems. 
In other cases, oxidation increases electrical resistivity and makes carbon blacks more hydrophilic. 
The extent of surface oxidation is measured by determining the quantity of the “volatile” component on the carbon black. 
High volatile levels are associated with low pH.
While difficult to measure directly for rubber, surface chemistry manifests itself through Black BNs effects on such in-rubber properties as abrasion resistance, tensile strength, hysteresis, and modulus. 
The effect of surface activity on cure characteristics will depend strongly on the cure system in use.

Black BN PHYSICAL FORM
This is important in matching a carbon black to the equipment by which Black BN is to be dispersed. 
The physical form (beads or powder) can affect the handling and mixing characteristics.
The ultimate degree of dispersion is also a function of the mixing procedures and equipment used. 
Powdered carbon blacks are recommended in low-shear dispersers and on three-roll mills. 
Beaded carbon blacks are recommended for shot mills, ball mills, and other high energy equipment. 
Beading provides lower dusting, bulk handling capabilities, and higher bulk densities, while powdered carbon blacks offer improved dispersibility.

Physical State: Solid, Fine Powder/Granules.
Colour: Black.
Odor: Odorless
pH value: 7-9
Boiling Point: Not applicable
Melting Point: No sharp melting point observed
Flash Point: Not applicable
Substance: does not having any oxidising property.
Ignition Temperature: Not applicable
Explosion Limit: Not applicable
Vapour Pressure: Not applicable
Density: 0.70
Solubility in water: 50 gms/litre

A carbon black’s application performance is determined by its fundamental properties and the level of dispersion achieved. 
The most important physical and chemical properties include particle size, porosity, structure, and surface chemistry. 
These properties are distributional in nature, and this distribution in properties affects performance. 
The level of dispersion in any given matrix is strongly influenced by the mixing equipment, formulation (including dispersant selection), and physical form.

1,7-Naphthalenedisulfonic acid, 4-(acetylamino)-5-hydroxy-6-((7-sulfo-4-((4-sulfophenyl)azo)-1-naphthalenyl)azo)-, tetrasodium salt
1,7-Naphthalenedisulfonic acid, 4-acetamido-5-hydroxy-6-((7-sulfo-4-((p-sulfophenyl)azo)-1-naphthyl)azo)-, tetrasodium salt
2-(4-(p-Sulfophenylazo)-7-sulfo-1-naphthylazo)-8-acetamido-1-naphthol-3,5-di-sulonic acid, tetrasodium salt
O836
tetrasodium 4-(acetylamino)-5-hydroxy-6-[(E)-{7-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]naphthalen-1-yl}diazenyl]naphthalene-1,7-disulfonate
DB-046643
FT-0603611
Q420079

ACID BLACK 3 (NAPHTHOL BLACK C.I. 27260)
Food Black 1;Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
sodium 4-acetamido-5-hydroxy-6-((E)-(7-sulfonato-4-((Z)-(4-sulfonatophenyl)diazenyl)naphthalen-1-yl)diazenyl)naphthalene-1,7-disulfonate
tetrasodium;4-acetamido-5-hydroxy-6-[(E)-[7-sulfonato-4-[(Z)-(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonate

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