CHROMOTROPE 2B
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- $17 - $666.8
- Product name: CHROMOTROPE 2B
- CAS: 548-80-1
- MF: C16H12N3NaO10S2
- MW: 493.39
- EINECS:208-959-9
- MDL Number:MFCD00003951
- Synonyms:2,7-Naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo-]-,disodiumsalt ;7-naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo]-disodium ;AcidRed176(16575) ;Chromotropicacid2B ;C.I.Acid Red 176;C.I.Mordant Black 93;Chromotrope Red 4B;Sodium 2-(p-nitrophenylazo)chromotropate
25 prices
Selected condition：
Brand
- aablocks
- AHH
- American Custom Chemicals Corporation
- Biosynth
- Chem-Impex
- Sigma-Aldrich
- Thermo Scientific Chemicals
- TRC
- Usbiological
Package
- 1g
- 2.5g
- 5g
- 10g
- 25g
- 50g
- 100g
- 250g
- 500g
- 1000g
- 1KG
- 5 g
- 25 g
- Manufactureraablocks
- Product numberAA00DDTF
- Product description4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt ≥97%
- Packaging1g
- Price$17
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA00DDTF
- Product description4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95%
- Packaging5g
- Price$24
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA00DDTF
- Product description4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95%
- Packaging25g
- Price$46
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA00DDTF
- Product description4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95%
- Packaging100g
- Price$129
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA00DDTF
- Product description4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt
- Packaging250g
- Price$230
- Updated2026-05-28
- Buy
- ManufacturerAHH
- Product numberMT-19952
- Product description2-(4-Nitrophenylazo)chromotropic acid disodium salt 97%
- Packaging1000g
- Price$318
- Updated2026-05-26
- Buy
- ManufacturerAmerican Custom Chemicals Corporation
- Product numberDYE0000089
- Product descriptionCHROMOTROPE 2B 95.00%
- Packaging25G
- Price$135.45
- Updated2021-12-16
- Buy
- ManufacturerBiosynth
- Product numberFC52646
- Product descriptionChromotrope 2B
- Packaging25g
- Price$227.25
- Updated2026-06-04
- Buy
- ManufacturerBiosynth
- Product numberFC52646
- Product descriptionChromotrope 2B
- Packaging250g
- Price$320
- Updated2021-12-16
- Buy
- ManufacturerBiosynth
- Product numberFC52646
- Product descriptionChromotrope 2B
- Packaging50g
- Price$363
- Updated2026-06-04
- Buy
- ManufacturerBiosynth
- Product numberFC52646
- Product descriptionChromotrope 2B
- Packaging500g
- Price$550
- Updated2021-12-16
- Buy
- ManufacturerBiosynth
- Product numberFC52646
- Product descriptionChromotrope 2B
- Packaging100g
- Price$637
- Updated2026-06-04
- Buy
- ManufacturerChem-Impex
- Product number22802
- Product descriptionChromotrope 2B
- Packaging1KG
- Price$666.8
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number22802
- Product descriptionChromotrope 2B
- Packaging250G
- Price$209.31
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number22802
- Product descriptionChromotrope 2B
- Packaging100G
- Price$112.67
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number22802
- Product descriptionChromotrope 2B
- Packaging25G
- Price$36.65
- Updated2026-05-19
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| aablocks | AA00DDTF | 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt ≥97% | 1g | $17 | 2026-05-28 | Buy |
| aablocks | AA00DDTF | 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95% | 5g | $24 | 2026-05-28 | Buy |
| aablocks | AA00DDTF | 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95% | 25g | $46 | 2026-05-28 | Buy |
| aablocks | AA00DDTF | 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt 95% | 100g | $129 | 2026-05-28 | Buy |
| aablocks | AA00DDTF | 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt | 250g | $230 | 2026-05-28 | Buy |
| AHH | MT-19952 | 2-(4-Nitrophenylazo)chromotropic acid disodium salt 97% | 1000g | $318 | 2026-05-26 | Buy |
| American Custom Chemicals Corporation | DYE0000089 | CHROMOTROPE 2B 95.00% | 25G | $135.45 | 2021-12-16 | Buy |
| Biosynth | FC52646 | Chromotrope 2B | 25g | $227.25 | 2026-06-04 | Buy |
| Biosynth | FC52646 | Chromotrope 2B | 250g | $320 | 2021-12-16 | Buy |
| Biosynth | FC52646 | Chromotrope 2B | 50g | $363 | 2026-06-04 | Buy |
| Biosynth | FC52646 | Chromotrope 2B | 500g | $550 | 2021-12-16 | Buy |
| Biosynth | FC52646 | Chromotrope 2B | 100g | $637 | 2026-06-04 | Buy |
| Chem-Impex | 22802 | Chromotrope 2B | 1KG | $666.8 | 2026-05-19 | Buy |
| Chem-Impex | 22802 | Chromotrope 2B | 250G | $209.31 | 2026-05-19 | Buy |
| Chem-Impex | 22802 | Chromotrope 2B | 100G | $112.67 | 2026-05-19 | Buy |
| Chem-Impex | 22802 | Chromotrope 2B | 25G | $36.65 | 2026-05-19 | Buy |
Properties
Melting point :300 °C
storage temp. :room temp
solubility :water: 10 mg/mL
form :Crystalline Powder
Colour Index :16575
color :Dark green to dark purple
Water Solubility :water: 10mg/mL
ε(extinction coefficient) :≥500 at 509-519nm in water
Merck :14,2240
BRN :4109733
Major Application :diagnostic assay manufacturing
hematology
histology InChIKey :AXUUHWJXDWBCSG-QIKYXUGXSA-L
SMILES :[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccc(cc3)[N+]([O-])=O)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O
CAS DataBase Reference :548-80-1(CAS DataBase Reference)
EPA Substance Registry System :2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt (548-80-1)
storage temp. :room temp
solubility :water: 10 mg/mL
form :Crystalline Powder
Colour Index :16575
color :Dark green to dark purple
Water Solubility :water: 10mg/mL
ε(extinction coefficient) :≥500 at 509-519nm in water
Merck :14,2240
BRN :4109733
Major Application :diagnostic assay manufacturing
hematology
histology InChIKey :AXUUHWJXDWBCSG-QIKYXUGXSA-L
SMILES :[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccc(cc3)[N+]([O-])=O)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O
CAS DataBase Reference :548-80-1(CAS DataBase Reference)
EPA Substance Registry System :2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt (548-80-1)
Safety Information
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| Signal word: | Warning | |||||||||||||||||||||
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Description
Chromotrope 2B along with Chromotrope 2R, was used to give a highly colored radical anion, during the spectrophotometric determination of cephalosporins (cephadroxil (I), cephalexin (II) and cephradine (III)) in pharmaceutical products.It may be immobilized on AG 1-X8 ion exchange resin, used in flame atomic absorption spectrometry and inductively coupled plasma mass spectrometry (ICP-MS), done for the on-line preconcentration and determination of aluminium.Related product price
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CHROMOTROPE 2B
$17-666.8
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