PONCEAU 4R

Ponceau 4R = E124 = 1-(4-sulpho-1-napthylazo)- 2-napthol- 6,8-disulphonic acid, trisodium salt

CAS Number: 2611-82-7  
E number: E124 (colours)
Chemical formula: C20H11N2Na3O10S3
Molar mass: 604.46 g·mol−1


Ponceau 4R (known by more than 100 synonyms, including as C.I. 16255, Cochineal Red A, C.I. Acid Red 18, Brilliant Scarlet 3R, Brilliant Scarlet 4R, New Coccine,:460) is a synthetic colourant that may be used as a food colouring. 
Ponceau 4R is denoted by E Number E124.
Ponceau 4Rs chemical name is 1-(4-sulfo-1-napthylazo)-2-napthol-6,8-disulfonic acid, trisodium salt. 
Ponceau (17th century French for "poppy-coloured") is the generic name for a family of azo dyes.

Ponceau 4R is a synthetic colourant that may be used as a food colouring and is a strawberry red azo dye which can be used in a variety of food products. 
Ponceau 4R is stable to light, heat, and acid but fades in the presence of ascorbic acid. 
Ponceau 4R is usually synthesized fromaromatic hydrocarbons.

Ponceau 4r (e124) is a synthetic food color that is added to induce a red color in food. 
Ponceau 4Rs chemical name is trisodium salt of 1-(4-sulpho-1-napthylazo)- 2-napthol- 6,8-disulphonic acid. 
Ponceau red is a red food color, a red azo dye with its C.I. number being 16255 and C.I. name being Acid Red 18. 
Other popular names for ponceau 4r are Cochineal Red A, C.I. 
Acid Red 18, Brilliant Scarlet 3r, Brilliant Scarlet 4r, New Coccine, SX Purple and Food Red 7. 
But despite so many synonyms, Ponceau 4R is popular as ponceau 4r only. 
The e number of the synthetic red food dye is e 124.

Physical Description
Ponceau 4R is a red dye that provides a dark red shade in applications. 
The color consists essentially of trisodium 2-hydroxy-1-(4-sulfonato-1- naphthylazo)-6,8-naphthalenedisulfonate, and subsidiary coloring matters together with sodium chloride and/or sodium sulfate as the principal uncolored components.  
Ponceau 4R is soluble in water and sparingly soluble in ethanol.

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

IUPAC name
Trisodium (8Z)-7-oxo-8-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-1,3-disulfonate

Ponceau 4R is a synthetic red azo dye and is used as a food colorant. 
Ponceau 4R is used in range of alcoholic and non-alcoholic beverages, food stuffs, preserved fruits etc. 
Ponceau 4R exists as trisodium-2-hydroxy-1-(4-sulfonato-1-naphthylazo)-6,8-naphthalenedisulfonate.

Application
Ponceau 4R was used in the determination of contents of several additives in different non-alcoholic beverages using HPLC. 
Ponceau 4R was used in understanding the genotoxicity of colorants. 
Ponceau 4R was also used in preparing a falsified drink in the analysis of methanol-ethanol mixture using biosensors amperometric system.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique.
Contact Technical Service for further support.

CAS Number: 2611-82-7  
ChemSpider: 11232342  
ECHA InfoCard: 100.018.216  
E number: E124 (colours)
PubChem CID: 9570119
UNII: Z525CBK9PG  
CompTox Dashboard (EPA): DTXSID9021213

Commonly used colorants include ponceau 4 R, allura red and azorubine. 
They contain azo group as the chromophore in the molecular structure, which can produce reduction peak by cathodic voltammetric determination.

Ponceau 4r (e124) – Food Uses
Ponceau food color is synthesized using coal tar. 
Ponceau 4R is used to induce a red color in a variety of food products like sweets, jellies, desserts, tinned and canned fruits and foods, cakes, pastries, soups, soft drinks, canned beverages, etc.

Ponceau dyes are azo dyes meaning they are formed when two hydrocarbon groups are joined by two nitrogen atoms. 
The molecular formula for Ponceau 4R is C20H11N2Na3O10S3.
Ponceau 4R, like all azo dyes, is produced from petroleum products.

The E number of Ponceau 4R is 124.
Other dyes in the Ponceau family include:
-Ponceau 2R
-Ponceau 6R (E Number 126)
-Ponceau S
-Ponceau SX (E Number 125)

Common Uses:
Ponceau 4R is currently not approved for use in the US or Canada. 
However, Ponceau 4R is still commonly used in other parts of the world (including Europe).
Ponceau 4R is used to colour a wide range of products; everything from candies to Chorizero sausage spices. 
In the US, imported products containing Ponceau 4R are recalled by the FDA.

Chemical formula: C20H11N2Na3O10S3
Molar mass: 604.46 g·mol−1

The chemical name of Ponceau 4R with the synonymous name Cochineal Red A is trisodium 2-hydroxy-1-(4-sulfonato-1-naphthylazo)-naphthalene-6,8-disulfonate with a structural formula as shown in Figure 2.1e. 
According to JECFA, the colour is manufactured by coupling diazotized naphthionic acid to G acid (2-naphthol-6,8-disulfonic acid) and converting the coupling product to the trisodium salt. 
Ponceau 4R may be converted to the corresponding aluminium lake under aqueous conditions by reacting aluminium oxide with the colouring matter.

As for the other azo-dyes, Ponceau 4R is authorised in a variety of foods including non-alcoholic flavoured drinks, with a maximum permitted level of 50 mg/l, and confectionary, fine bakery wares, edible ices, and mustard. 
The highest level permitted for the colouring of foods is authorised for decorations and coatings, sauces, salmon substitutes, and surimi with an amount of 500 mg/kg food, while edible cheese rinds and edible casing may contain the colour according to the quantum satis principle. 
Although typical use levels for many food additives are lower than the authorised maximum permitted levels, data from food industry indicate that Ponceau 4R is often used at levels close to the maximum permitted levels. 
Consequently, there are only small differences in exposure estimates based on maximum permitted levels compared to actual use levels. 
For adults, the typical exposure is in the range of 0.4–1.1 mg/kg bw/day (mean to high level exposure), while children have a higher exposure due to their lower body weight in the range of 0.3–6.7 mg/kg bw/day.

These agents are used to produce the desired color in the food articles. 
They include erythrosine, tartazine, quinoline yellow, sunset yellow, brilliant blue, indigo carmine, carmosine, Ponceau 4R, allura red, amaranth, etc. 
The allura red, quinoline yellow, and tartazine are linked to hypersensitivity reactions including asthma and skin rashes. 
In contrast, the erythrosine, sunset yellow, Ponceau red, indigo carmine, and brilliant blue have a potential role in carcinogenesis. 
Most of these agents are banned in many developed countries or their use has been restricted to fixed levels.

Ponceaue 4R interaction with protein, Nisin and BSA was concentration dependent and may be used for protein assay. 
As the dye binds with almost all the proteins and current methodology may be used for the estimation of proteins in various food systems. 
During the course of present work staining with ponceau 4R of resolved proteins on PAGE (poly acryl amide gel electrophorosis) was comparable with Coommassie Brilliant Blue R250. 
The Ponceaue 4R was highly sensitive, rapid and produced sharp red bands on the gel on 0.2% concentration. 
The effects of pH, concentration of proteins and dye were also investigated in various conditions which would help food processors to use a calculated amount of dye. 
The impact of tryptic digestibility on Ponceaue 4R -Protein Complexes (PPC) has illustrated that dye may safely be used without any adverse effect on the digestion of PPC.

Ponceau 4R
New coccine
2611-82-7
Acid red 18
Food Red No. 102
C.I. Acid Red 18
SX Purple
Victoria Scarlet 3R
Cochineal Red A
Food Red 102
C.I. Acid Red 28
Coccine
Neucoccin

Ponceau 4R Food Color is also known by the names of Cochineal Red A Food Color, Brilliant Scarlet 3R, C.I. Acid Red 18, New Coccine. 
Providing support as a synthetic colorant it can be used as food coloring agent and is made available in form of red AZO dye. 
Ponceau 4R finds suitability in variety of food products and normally come synthesized from aromatic hydrocarbons from petroleum.
Ponceau 4Rs composition includes trisodium 2-hydroxy-1(4-sulfonato-1-naphthylazo) naphthalene-6,8-disulfonate as well as subsidiary coloring agents that are used in combination with sodium chloride/sodium sulfate as principal uncolored component.

Ponceau 4R Properties:
-To offset colour loss due to exposure to light, air, extremes of temperature, moisture and storage conditions
-To correct natural variations in colour
-To enhance colours that occur naturally but at levels weaker than those usually associated with a given food
-To provide a colourful identity to foods that would otherwise be virtually colourless
-To provide a colourful appearance to certain "fun foods"
-To protect flavours and vitamins that may be affected by sunlight during storage

Molecular Formula: C20H11N2Na3O10S3
Average mass: 604.473 Da
Monoisotopic mass: 603.926880 Da
ChemSpider: ID7844587

Ponceau 4R is a synthetic colourant that may be used as a food colouring. 

Brilliant Scarlet 3R
Strawberry Red
Coccin Red
New Coccin
Purple Red
C.I. Food Red 7
Brilliant Scarlet
Atul Scarlet F
Acid Ponceau 4R
Acid Scarlet 3R
Acid Scarlet 4R
Java Scarlet 3R
Neklacid Red 3R
Neklacid Red 4R

Ponceau 4R also known as Cochineal Red. Ponceau 4R is a red dye which can be used in a variety of food products. 
Ponceau 4R gives an appearance of dark red shade in the applications.

Ponceau 4R is also known by the names of Cochineal Red A, Brilliant Scarlet 3R, C.I. Acid Red 18, New Coccine. 
Providing support as a synthetic colorant it can be used as food coloring agent and is made available in form of red AZO dye. 
Ponceau 4R finds suitability in variety of food products and normally come synthesized from aromatic hydrocarbons from petroleum.
Ponceau 4Rs composition includes trisodium 2-hydroxy-1(4-sulfonato-1-naphthylazo) naphthalene-6,8-disulfonate as well as subsidiary coloring agents that are used in combination with sodium chloride/sodium sulfate as principal uncolored component.

grade:analytical standard
Quality Level: 100
assay: ≥99.0% (HPLC)
form: neat
shelf life: limited shelf life, expiry date on the label

application(s)
-HPLC: suitable
-gas chromatography (GC): suitable

Featured Industry
-Cleaning Products
-Cosmetics
-Food and Beverages
-Personal Care

format: neat
SMILES string: [Na+].[Na+].[Na+].Oc1ccc2cc(cc(c2c1\N=N\c3ccc(c4ccccc34)S([O-])(=O)=O)S([O-])(=O)=O)S([O-])(=O)=O
InChI: 1S/C20H14N2O10S3.3Na/c23-16-7-5-11-9-12(33(24,25)26)10-18(35(30,31)32)19(11)20(16)22-21-15-6-8-17(34(27,28)29)14-4-2-1-3-13(14)15;;;/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32);;;/q;3*+1/p-3/b22-21+;;;
InChI key: SWGJCIMEBVHMTA-ZRUFZDNISA-K

Scarlet 4R
Ponceau 4RE
Ponceau 4RF
Ponceau 4RT
Scarlet 4RA
Cochineal Red 4R
Kiton Scarlet 4R
Acid Scarlet 3RZ
Acid Brilliant Scarlet 3R
Cilefa Ponceau 4R
Fenazo Scarlet 3R
HD Ponceau 4R
Ponceau 4RE.FQ

Ponceaue 4R interaction with protein, Nisin and BSA was concentration dependent and may be used for protein assay. 
As the dye binds with almost all the proteins and current methodology may be used for the estimation of proteins in various food systems. 
During the course of present work staining with ponceau 4R of resolved proteins on PAGE (poly acryl amide gel electrophorosis) was comparable with Coommassie Brilliant Blue R250. 
The Ponceaue 4R was highly sensitive, rapid and produced sharp red bands on the gel on 0.2% concentration. 
The effects of pH, concentration of proteins and dye were also investigated in various conditions which would help food processors to use a calculated amount of dye. 
The impact of tryptic digestibility on Ponceaue 4R -Protein Complexes (PPC) has illustrated that dye may safely be used without any adverse effect on the digestion of PPC.

Colacid Ponceau 4R
Food Red 7
Hexacol Ponceau 4R
Pontacyl Scarlet RR
Acilan Scarlet V3R
UNII-Z525CBK9PG
Victoria Scarlet Red
Brilliant Ponceau 3R
Brilliant Ponceau 4R
Brilliant Ponceau 5R
Brilliant Scarlet 4R
Certicol Ponceau 4RS
Curol Bright Red 4R
C.I. 16255

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of ponceau 4R for cats, dogs and ornamental fish. 
The following ponceau 4R concentrations in complete feed were considered safe: 31 mg/kg for cats, 37 mg/kg for dogs and 137 mg/kg for ornamental fish. 
Inhalation exposure of ponceau 4R is regarded as hazardous. 
In the absence of data, the Panel cannot conclude on the irritancy potential of ponceau 4R to skin or eyes. 
No conclusion could be made on the skin sensitisation of ponceau 4R. 
Ponceau 4R is effective in adding colour to feedingstuffs.

Atul Acid Scarlet 3R
Brilliant Ponceau 3RF
Brilliant Ponceau 4RC
HD Ponceau 4R Supra
Naphthalene Scarlet 4R
Strawberry Red A Geigy
Naphthalene Scarlet 4RS
L-Red 4
Edicol Supra Ponceau 4R
Eurocert Cochineal Red A
Hidacid Fast Scarlet 3R
Acidal Bright Ponceau 3R
Kochineal Red A for Food

Ponceau 4R is used as a coloring agent in many different products, such as food, drinks, medicines, cosmetics and tobacco. 
However, ponceau 4R also shows carcinogenic, teratogenic and mutagenic behavior in high doses. 
In this work, standard Raman, theoretical Raman and surface-enhanced Raman scattering (SERS) spectra have been used to investigate ponceau 4R. 
More specifically, density functional theory (DFT) calculations have been used to calculate the optimized Raman spectrum of ponceau 4R at the B3LYP/6-31G(d) level. 
This has provided a better understanding of the optimized geometry and vibrational frequencies of this dye. 

In addition, the experimental spectrum of ponceau 4R has been compared with the theoretical spectrum; good agreement was obtained. 
Finally, Ponceau 4R has shown that using SERS the detection limit of the ponceau 4R solution can be as low as 5 μg/mL. 
This has been achieved by SERS measurements of ponceau 4R on a substrate of gold nanoparticles. 
The SERS peaks at 1030, 1236, 1356 and 1502 cm(-1) were chosen as index for semi-quantitative analysis, showing that the SERS technique provided a useful ultrasensitive method for the detection of ponceau 4R.

Functions:
1. Colorant - Pigments or dyes that are added in order to change or enhance the color.
Ponceau 4R (E124) is a synthetic strawberry red azo dye that may be used as a food colouring found in dessert toppings, jelly, salami, seafood dressings, tinned strawberries and fruit pie fillings and packeted cake mixes, cheesecakes, soups and trifles.

New Coccine Extra Pure A
Edicol Supra Ponceaux 4RS
Naphthalene Ink Scarlet 4R
Sugai Brilliant Scarlet 3R
Edicol Supra Ponceaux 4 RS
Rakuto Brilliant Scarlet 3R
Aizen Brilliant Scarlet 3RH
San-ei Brilliant Scarlet 3R
Bucacid Brilliant Scarlet 3R
Takaoka Brilliant Scarlet 3R
1578 Red

A dye shown below is known as Ponceau 4R, a strawberry-red color dye which was used in food industry to “improve” color of food products. 
Propose how to synthesize this product using diazo coupling reaction. 
Give the structure of amine, coupling aromatic partner, reaction equations for both diazonium salt synthesis and coupling, and the structure of diazonium salt

Ponceau 4R is authorised without a time limit under Council Directive 70/524/EEC4 as colourant for cats, dogs and ornamental fish without maximum levels. 
Under the same regulation, Ponceau 4R is authorised without a time limit for all species or categories of animals, with the exception of cats and dogs, in animal feedingstuffs only in products processed from: (i) waste products of foodstuffs, (ii) other base substances, with the exception of cereals and manioc flour, denaturated by means of these agents or coloured during technical preparation to ensure the necessary identification during manufacture.

Daishiki Brilliant Scarlet 3R
Acid Red 18;New Coccine
Calcocid Brilliant Scarlet 3RN
Cochineal Red A Specially Pure
Hispacid Brilliant Scarlet 3RF
Z525CBK9PG
Kayaku Acid Brilliant Scarlet 3R
Kayaku Food Colour Red No. 102
New Coccine Extra Conc. A Export
Symulon Acid Brilliant Scarlet 3R
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt
E 124
Brilliant Ponceau 4RC Specially Pure
C.I. Acid Red 18, Trisodium Salt
Brilliant Scarlet 3R (Biological stain)
MFCD00004084
Zolfosol
Crimson SX
Purple SX

CAS No.    2611-82-7
Molecular Formula C20H11N2Na3O10S3
Molecular Weight 604.47
Safety # 22-24/25
Synonyms Acid Red 18; New Coccine

Ponceau 4R or Cochineal red A is a red synthetic azo dye. 
This additive is permitted in the European Union under number E124 with an Acceptable Daily Intake of 4mg/kg. 
This colour is a liquid.

Molecular Formula: C20H11AlN2O10S3
Molecular Weight: 562.49
CAS Registry Number: 15876-47-8
EINECS: 240-008-3

Synthetic food dyes, which are used in limited quantities of class LAKE PONCEAU 4R permitted products in the food codex.
Food except pharmaceuticals, cosmetics, cleaning products, colored stones, play dough, etc. are also used for coloring many people in contact with the product. 
Which can be emulsified with the help of some emulsifiers can be used in water-based products.

1,3-Naphthalenedisulfonic acid,7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-, trisodium salt
2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt
Neucoccin [German]
L-Rot 4 [German]
cochineal red
Food Red Number 102
Cochenillerot A
Coccine nouvelle
Red Dye No. 102
Cochenillerot A [German]
Coccine nouvelle [French]
Edicol Supra Ponceau 4RS
Cerven kysela 18 [Czech]
Cerven kosenilova A [Czech]
Cerven kysela 18
New Coccine Red No. 102
Cerven kosenilova A
Schultz Nr. 213 [German]
CCRIS 2652

Ponceau 4R (E124 food additive), is a colorant of synthetic origin, which has a crimson color. 
The E124 colorant opens the whole palette of tints: when yellow (E102, E104) or orange (E110) colorants are added, the brown color is obtained, and when Ponceau 4R is mixed with a blue Ponceau 4R colorant gives purple color.
By Ponceau 4Rs chemical composition E124 colorant is sodium salt: granulate or powder of red color perfectly soluble in water. 
The chemical formula of the E124 colorant: C20H11N2Na3O10S3. 
The E124 additive is thermostable, resistant to the effects of light, reducing agents and oxidants Products processed by Ponceau 4R can be subjected to any technological operations (sterilization, pasteurization, cooling, freezing, etc.).

Cerven potravinarska 7 [Czech]
Rouge de cochenille A [French]
Rouge de cochenille A
Schultz Nr. 213
C.I. Acid Red 18 (VAN)
Cerven potravinarska 7
HSDB 5537
L-Rot 4
NSC 4301
EINECS 220-036-2
Victoria Scharlach 4 R Extra [German]
C.I. 185
CI 16255
Ponceau

Ponceau 4R is a synthetic colourant that may be added to foods. 
Ponceau 4R is denoted by E Number E124. 
Ponceau 4R is a red azo dye which can be used in a variety of food products.
Ponceau 4R is considered carcinogenic in some countries, including the USA, Norway, and Finland, and Ponceau 4R is currently listed as a banned substance by the U.S. Food and Drug Administration (FDA).
Since 2000, the FDA has seized Chinese-produced haw flakes (a fruit candy) on numerous occasions for containing Ponceau 4R.

Victoria Scharlach 4 R Extra
trisodium 7-hydroxy-8-[(Z)-(4-sulfonato-1-naphthyl)diazenyl]-1,3-naphthalenedisulfonate
trisodium;7-hydroxy-8-[(E)-(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3-disulfonate
Scarlet 3R
Trisodium 1-(1-naphthylazo)-2-hydroxynaphthalene-4',6,8-trisulphonate
Ponceau 4 R
Food red No.102
Acid Red 18,
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(2-(4-sulfo-1-naphthalenyl)diazenyl)-, sodium salt (1:3)
1-(4-Sulpho-1-naphthylazo)-2-naphthol-6,8-disulphonic acid, trisodium salt
EC 220-036-2
Ponceau 4RC (E124)
7-Hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-1,3-naphthalenedisulfonic acid trisodium salt
51811-48-4
DTXSID9021213
Ponceau 4R, analytical standard
New Coccine, Dye content 75 %
C20H11N2O10S3.3Na
Ponceau 4R (C.I. 16255)
AKOS000282867
AKOS015903123
AKOS024319577

products name: ponceau 4r
color: shade    
synonyms: food red-7
chemical name: trisodium 2-hydroxy-1-(4- sulfonato-1-naphtylazo)-naphtalene-6,8-disulfonate
color index no.: 16255
c. I. Name: acid red 18
fda status: --
cas no.: 2611-82-7
einecs no.: 220-036-2
eec no.: e-124
hue name (food)    red: - 7
indian standard no.: 2258
class: monoazo
total dye content % min.: 82
loss on drying at 135 c & sodium chlorides & sulphates % max: 18
water insoluble matter % max.: 0. 2
ether extracts % max.: 0. 2
subsidiary dye % max.: 1. 0
dyes intermediates % max.: 0. 50
unsulfonated primary aromatic amines % max.: 0. 01
lead (as "pb") ppm (max. ): 10. 00
arsenic (as "as" ppm (max. ): 1. 00
mercury (as "hg") ppm (max): 1. 0
chromium (as "cr") ppm (max): 5. 0
heavy metals ppm (max): 40. 00

7-Hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-1,3-naphthalenedisulfon- ic acid, trisodium salt
trisodium 7-hydroxy-8-[(Z)-(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3-disulfonate
trisodium;7-hydroxy-8-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3-disulfonate
C.I. Acid Red 18, trisodium salt (8CI)
F0140
N0309
C20344
Q384709
J-016263
Ponceau 4RC (E124) 100 microg/mL in Acetonitrile:Water
sodium (E)-7-hydroxy-8-((4-sulfonatonaphthalen-1-yl)diazenyl)naphthalene-1,3-disulfonate
Trisodium 7-hydroxy-8-(4-sulfonatonaphthalen-1-yl)diazenylnaphthalene-1,3-disulfonate
1082572-30-2
14007-28-4
(8Z)-7-Oxo-8-[(4-sulfonato-1-naphtyl)hydrazono]-7,8-dihydro-1,3-naphtalènedisulfonate de trisodium [French] [ACD/IUPAC Name]
1,3-Naphthalenedisulfonic acid, 7,8-dihydro-7-oxo-8-[2-(4-sulfo-1-naphthalenyl)hydrazinylidene]-, sodium salt, (8Z)- (1:3) [ACD/Index Name]
Ponceau 4R
Trinatrium-(8Z)-7-oxo-8-[(4-sulfonato-1-naphthyl)hydrazono]-7,8-dihydro-1,3-naphthalindisulfonat [German] [ACD/IUPAC Name]
Trisodium (8Z)-7-oxo-8-[(4-sulfonato-1-naphthyl)hydrazono]-7,8-dihydro-1,3-naphthalenedisulfonate [ACD/IUPAC Name]
1-(4-Sulpho-1-naphthylazo)-2-naphthol-6,8-disulphonic acid, trisodium salt
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt
11138-24-2 [RN]
12000-58-7 [RN]
1578 Red
161628-34-8 [RN]
39470-82-1 [RN]
39471-00-6 [RN]
51811-48-4 [RN]

Boiling Point: °Cat760mmHg
CAS Number: 2611-82-7
Chemical Composition: Sodium nitrite-->Sodium chloride-->Phenol-->Aluminium hydroxide-->Aluminium sulfate-->Sodium nitrate-->Congo red paper-->Naphthionic acid-->Sodium 4-amino-1-naphthalenesulfonate-->Ponceau 4R altiminium lake
IUPAC Name: trisodium (8Z)-7-oxo-8-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-1,3-disulfonate
Molar Mass: 604.47 g mol?1
Molecular Formula: C20H11N2Na3O10S3
RTECS Number: QJ6530000
Solubility: Soluble particular

7-Hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-1,3-naphthalenedisulfon- ic acid, trisodium salt
7-Hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-1,3-naphthalenedisulfonic acid trisodium salt
Acid Brilliant Scarlet 3R
Acid Ponceau 4R
Acid Red 18
Acid Scarlet 3R
Acid Scarlet 3RZ
Acid Scarlet 4R
Acidal Bright Ponceau 3R
Acilan Scarlet V3R
Aizen Brilliant Scarlet 3RH
Atul Acid Scarlet 3R
Atul Scarlet F
Brilliant Ponceau 3R
Brilliant Ponceau 3RF
Brilliant Ponceau 4R
Brilliant Ponceau 4RC
Brilliant Ponceau 4RC Specially Pure
Brilliant Ponceau 5R
Brilliant Scarlet
Brilliant Scarlet 3R
Brilliant Scarlet 3R (Biological stain)
Brilliant Scarlet 4R
Bucacid Brilliant Scarlet 3R
C.I. Acid Red 18
C.I. Acid Red 18 (VAN)
C.I. Acid Red 18, trisodium salt
C.I. Acid Red 18, trisodium salt (8CI)
C.I. Acid Red 28
C.I. Food Red 7

Ventilation Local ventilation capable of minimising dust emission at the point of use 
Eye Protection Protective glasses may be used to protect eyes from airborne abrassive particles
Hand Protection - Rubber gloves may be used
- Wash the hands before and at the end of work with water, soap
Skin Protection Wear vinyl/rubber general protective overall/outer garments

Calcocid Brilliant Scarlet 3RN
Certicol Ponceau 4RS
Cerven kosenilova A [Czech]
Cerven kysela 18 [Czech]
Cerven potravinarska 7 [Czech]
CI ACID RED 18
Cilefa Ponceau 4R
Coccin Red
Coccine

Ponceau 4R is a synthetic colourant that may be used as a food colouring. 
Ponceau 4R is a strawberry red azo dye which can be used in a variety of food products, and is usually synthesized fromaromatic hydrocarbons; Ponceau 4R is stable to light, heat, and acid but fades in the presence of ascorbic acid.

Physical State Solid, fine amorphous powder
Colour Scarlet Red
Odor Odorless
pH value 4-6
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 0.20 - 0.70
Solubility in water Insoluble in water, (may be slightly soluble in water)

Carmoisine (E 122), Ponceau 4R (E 124) and Allura red (E 129), are synthetic azo dyes 7generally used to give red colour to syrups, soda and sweets. 
They could be easily distinguished from the natural dyes, which are not electroactive, using differential pulse polarography. 
The influence of the pH on the intensities and the potentials of the peaks was studied between pH 3 and 11, and acidic or strongly basic media appeared not convenient. 
Ponceau 4R was shown that in a pH=9 phosphate buffer, the peaks of Carmoisine, Allura red and Ponceau 4R were well shaped and separated, allowing accurate identification and quantification, even if the three dyes were mixed. 
No significant changes of the peak potentials were noticed in the commercial samples, and consequently the dyes can be identified without ambiguity. 
A procedure using the standard addition technique was validated with test syrups.

Coccine nouvelle [French]
Cochenillerot A [German]
Cochineal Red 4R
Cochineal Red A
Cochineal Red A Specially Pure
Colacid Ponceau 4R
Crimson SX
Curol Bright Red 4R
Daishiki Brilliant Scarlet 3R
Edicol Supra Ponceau 4R
Edicol Supra Ponceau 4RS
Edicol Supra Ponceaux 4 RS
Edicol Supra Ponceaux 4RS
Eurocert Cochineal Red A
Fenazo Scarlet 3R
Food Red 102
Food Red 6
Food Red 7
Food Red No. 102
Food Red Number 102
HD Ponceau 4R
HD Ponceau 4R Supra
Hexacol Ponceau 4R

Hazardous Reactions No information available
Hazardous Decomposition Product No information available
Chemical In Compatibility Strong Reducing Agents, Decolourising Agents, Strong Acids & Alkalies Condition To Avoid I) Heating To High Temperature II) Storage under damp atmosphere
Reactivity Data This material is stable under condition of normal handling and use, but sensitive to moist air.

Hidacid Fast Scarlet 3R
Hispacid Brilliant Scarlet 3RF
Java Scarlet 3R
Kayaku Acid Brilliant Scarlet 3R
Kayaku Food Colour Red No. 102
Kiton Scarlet 4R
Kochineal Red A for food
MFCD00004084
Naphthalene Ink Scarlet 4R
Naphthalene Scarlet 4R
Naphthalene Scarlet 4RS
Neklacid Red 3R
Neklacid Red 4R
Neucoccin [German]
New coccin
New Coccine
New Coccine Extra Conc. A Export
New Coccine Extra Pure A
New Coccine Red No. 102
Ponceau 4R Aluminum Lake
Ponceau 4RE

The reddish-orange dye is known to cause cancer, allergic reactions and asthma. 
Presently Ponceau 4R is banned in Canada, Norway and United States. 
Ponceau 4R is an azo dye which is produced from petroleum products.
In our latest test we found five samples of dried prawns, two samples of fish crackers and one sample of char siew (barbecued pork) containing Ponceau 4R. 
The samples were bought in Penang, Kedah and Perlis. 
The char siew sample was bought in Penang.
In our earlier tests we found the dye to be used in turmeric and curry powder. 
The dye was also used to adulterate tea.

Ponceau 4RE.FQ
Ponceau 4RF
Ponceau 4RT
Pontacyl Scarlet RR
Purple Red
Purple SX
Rakuto Brilliant Scarlet 3R
Red Dye No. 102
Rouge de cochenille A [French]
San-ei Brilliant Scarlet 3R
Scarlet 4R
Scarlet 4RA
Schultz Nr. 213 [German]
Strawberry Red
Strawberry Red A Geigy
Sugai Brilliant Scarlet 3R
SX purple
Symulon Acid Brilliant Scarlet 3R
Takaoka Brilliant Scarlet 3R
TRISODIUM (8Z)-7-OXO-8-[2-(4-SULFONATONAPHTHALEN-1-YL)HYDRAZIN-1-YLIDENE]NAPHTHALENE-1,3-DISULFONATE
Trisodium 1-(1-naphthylazo)-2-hydroxynaphthalene-4',6,8-trisulphonate
Victoria Scarlet 3R
Victoria Scarlet Red
Victoria Scharlach 4 R Extra [German]
Zolfosol

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