Cas no 547-58-0 (Methyl orange)
Methyl orange Chemical and Physical Properties
Names and Identifiers
-
- Methyl Orange
- 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid, sodium salt
- Acid Orange 52 C.I. 13025
- C.I. 13025
- Helianthise
- methyl orange for microscopy
- METHYL ORANGE SODIUM SALT
- sodium 4-(4-dimethylaminophenylazo)benzenesulphonate
- Methyl Orange solution
- Acid Orange 52
- 4-Dimethylaminoazobenzene-4-sulfonic acid, sodium salt
- Sodium 4-[(E)-2-[4-(dimethylamino)phenyl]-diazen-1-yl]benzene-1-sulfonate
- 4-{[4-(DiMethylaMino)phenyl]azo} benzene sulfonic acid sodiuM salt
- 4-dimethylaminoazobenzene-4'-sulfonic acid,sodium salt
- BETZ 0211
- Gold orange
- HELIANTHIN
- HELIANTHINE
- helianthine B
- IND
- Methyl Orange, ACS reagent
- Methyl Orange, Certified, Pure
- ORANGE III
- orange3
- oranziii
- p-DiMethyl-aMi
- S NO 176
- SodiuM p-diMethyl-aMinoazobenzene sulfonate
- Tropaeolin D
- MethylOrange
- Eniamethyl Orange
- C.I. Acid Orange 52
- Kca Methyl Orange
- Methyloranz [Czech]
- Oranz III [Czech]
- Orange III (VAN)
- CI Acid Orange 52
- Methyl Orange B
- Oranz methylova [Czech]
- Oranz kysela 52 [Czech]
- Diazoben
- Sodium p-dimethylaminoazobenzenesulfonate
- 4-Dimethylaminoazobenzene-4'-sulphonic acid sodium salt
- p-((p-(Dimeth
- Methyl orange(Orange III)
- 60305-61-5
- AKOS024301609
- AKOS015950686
- sodium 4-[(E)-2-[4-(dimethylamino)phenyl]diazen-1-yl]benzene-1-sulfonate
- Z90123631
- Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt,(E)-
- Sodium 4-(dimethylamino)azobenzene-4'-sulfonate
- sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate
- Oranz III
- 6B4TC34456
- NSC-9416
- Benzenesulfonic acid, 4-(2-(4-(dimethylamino)phenyl)diazenyl)-, sodium salt (1:1)
- EN300-18774
- Methyloranz
- Oranz kysela 52
- 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt
- Q409196
- AI 3-09086
- Oranz methylova
- Benzenesulfonic acid, 4-((4-(dimethylamino)phenyl)azo)-, sodium salt
- SCHEMBL18892
- Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt
- Benzenesulfonic acid, p-((p-(dimethylamino)phenyl)azo)-, sodium salt
- M0017
- Methylorange sodium salt
- HSDB 4322
- sodium 4-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzene-1-sulfonate
- p-((p-(Dimethylamino)phenyl)azo)benzenesulfonic acid sodium salt
- DB-052645
- NSC 9416
- Sodium 4-(4-(dimethylamino)phenylazo)benzenesulfonate
- NS00080614
- M0489
- F0347-4903
- DTXSID60883437
- sodium (E)-4-((4-(dimethylamino)phenyl)diazenyl)benzenesulfonate
- METHYL ORANGE [HSDB]
- SCHEMBL18893
- HY-118907
- SY010301
- Methyl Orange (C.I. 13025)
- 4-((4-(Dimethylamino)phenyl)diazenyl)benzenesulfonic acid, sodium salt
- CI 13025
- 4-(((4-DIMETHYLAMINO)PHENYL)AZO)BENZENESULFONIC ACID SODIUM SALT
- 547-58-0
- EINECS 208-925-3
- AI3-09086
- 4-(2-(4-(DIMETHYLAMINO)PHENYL)DIAZENYL)BENZENESULFONIC ACID SODIUM SALT (1:1)
- CCRIS 9454
- UNII-6B4TC34456
- MFCD00007502
- AKOS001115953
- CS-0077680
- METHYL ORANGE [MI]
- AKOS015902984
- Sodium 4'-(dimethylamino)azobenzene-4-sulfonate
- Methyl orange
-
- MDL： MFCD00007502
- Inchi： 1S/C14H15N3O3S.Na/c1-17(2)13-7-3-11(4-8-13)15-16-12-5-9-14(10-6-12)21(18,19)20;/h3-10H,1-2H3,(H,18,19,20);/q;+1/p-1/b16-15+;
- InChI Key： STZCRXQWRGQSJD-GEEYTBSJSA-M
- SMILES： S(C1C([H])=C([H])C(=C([H])C=1[H])/N=N/C1C([H])=C([H])C(=C([H])C=1[H])N(C([H])([H])[H])C([H])([H])[H])(=O)(=O)[O-].[Na+]
- BRN： 4732884
Computed Properties
- Exact Mass: 327.06500
- Monoisotopic Mass: 327.065
- Isotope Atom Count: 0
- Hydrogen Bond Donor Count: 0
- Hydrogen Bond Acceptor Count: 6
- Heavy Atom Count: 22
- Rotatable Bond Count: 4
- Complexity: 448
- Covalently-Bonded Unit Count: 2
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count : 0
- Defined Bond Stereocenter Count: 0
- Undefined Bond Stereocenter Count: 0
- Topological Polar Surface Area: 85.2
- Surface Charge: 0
- Topological Polar Surface Area: 93.5
Experimental Properties
- Color/Form: Orange powder or crystalline scales
- Density: 0.987?g/mL?at 25?°C
- Melting Point: 300 oC
- Boiling Point: 100°C
- Flash Point: 37 °C
- PH: 6.5 (5g/l, H2O, 20℃)
- Solubility: 5g/l
- Water Partition Coefficient: Soluble in ethanol. Partially soluble in hot water. Slightly soluble in cold water and pyrimidine. Insoluble in ether and alcohol.
- Stability/Shelf Life: Stable. Incompatible with strong oxidizing agents.
- PSA: 93.54000
- LogP: 4.15290
- Merck: 6105
- pka: 3.4(at 25℃)
- Color index: 13025
- λmax: 507nm, 522nm, 464nm
- PH: 3.1(Red)-4.4(Orange)
- Sensitiveness: Sensitive to humidity
- Solubility: Soluble in hot water and alcohol, insoluble in ether
Methyl orange Security Information
-
Symbol:
- Prompt：dangerous
- Signal Word：Danger
- Hazard Statement： H301
- Warning Statement： P301+P310
- Hazardous Material transportation number：UN 3143 6.1/PG 3
- WGK Germany：3
- Hazard Category Code： 25
- Safety Instruction： 45-24/25-16-36/37/39
- RTECS：DB6327000
-
Hazardous Material Identification：
- Hazard Level：6.1
- TSCA：Yes
- Packing Group：III
- Risk Phrases：R10
- HazardClass：6.1
- PackingGroup：III
- Storage Condition：Sealed storage.
Methyl orange Customs Data
- HS CODE：29270000
- Customs Data：
China Customs Code:
2927000090Overview:
2927000090 Other diazo compounds\Azo compounds, etc(Including azoxycompounds). VAT:17.0% Tax refund rate:9.0% Regulatory conditions:nothing MFN tariff:6.5% general tariff:30.0%
Declaration elements:
Product Name, component content, use to
Summary:
2927000090 other diazo-, azo- or azoxy-compounds.Supervision conditions:None.VAT:17.0%.Tax rebate rate:9.0%.MFN tariff:6.5%.General tariff:30.0%
Methyl orange Pricemore >>
| Related Categories | No. | Product Name | Cas No. | Purity | Specification | Price | update time | Inquiry |
|---|---|---|---|---|---|---|---|---|
| HE FEI BO MEI SHENG WU KE JI YOU XIAN ZE REN GONG SI | JM0923-25g |
Methyl orange |
547-58-0 | 25g |
￥105元 | 2023-09-15 | ||
| HE FEI BO MEI SHENG WU KE JI YOU XIAN ZE REN GONG SI | JM0923-5g |
Methyl orange |
547-58-0 | 5g |
￥25元 | 2023-09-15 | ||
| TI XI AI ( SHANG HAI ) HUA CHENG GONG YE FA ZHAN Co., Ltd. | M0017-500ML |
Methyl Orange (0.1% in Water) [for Titration] |
547-58-0 | 500ml |
￥300.00 | 2023-09-07 | ||
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M196493-100ml |
Methyl orange |
547-58-0 | 0.04% | 100ml |
￥61.90 | 2023-09-01 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M196493-500ml |
Methyl orange |
547-58-0 | 0.04% | 500ml |
￥236.90 | 2023-09-01 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M196492-250ml |
Methyl orange |
547-58-0 | 0.1% | 250ml |
￥113.90 | 2023-09-01 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M196491-500ml |
Methyl orange |
547-58-0 | 0.1% | 500ml |
￥411.90 | 2023-09-01 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M101231-25g |
Methyl orange |
547-58-0 | 96% | 25g |
￥120.90 | 2023-09-02 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M101231-500g |
Methyl orange |
547-58-0 | 96% | 500g |
￥752.90 | 2023-09-02 | |
| SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd. | M101231-100g |
Methyl orange |
547-58-0 | 96% | 100g |
￥221.90 | 2023-09-02 |
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Methyl orange Related Literature
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Yu Li,Patrycja Bober,Miroslava Trchová,Jaroslav Stejskal J. Mater. Chem. C 2017 5 4236
-
Qurrat-ul-Ain,Sumaira Khurshid,Zarnab Gul,Jaweria Khatoon,Muhammad Raza Shah,Irum Hamid,Iffat Abdul Tawab Khan,Fariha Aslam RSC Adv. 2020 10 1021
-
émilie Delahaye,Séraphin Eyele-Mezui,Jean-Fran?ois Bardeau,Cédric Leuvrey,Lo?c Mager,Pierre Rabu,Guillaume Rogez J. Mater. Chem. 2009 19 6106
-
Peipei Sun,Kaitao Zhang,Shibin Shang,Jie Song,Dan Wang RSC Adv. 2016 6 95656
-
R. A. Hasty,F. J. Lima,J. M. Ottaway Analyst 1981 106 76
Additional information on Methyl orange
Methyl Orange (CAS No 547-58-0): A Comprehensive Guide to Properties, Applications, and Market Trends
Methyl orange (CAS No 547-58-0) is a widely recognized pH indicator and azo dye that has been extensively used in chemical laboratories and industrial applications for decades. This sodium salt of 4-[4-(dimethylamino)phenyl]diazenyl]benzenesulfonic acid is particularly valued for its distinct color-changing properties in different pH environments. As one of the most common acid-base indicators, methyl orange solution transitions from red in acidic conditions (pH ≤ 3.1) to yellow in alkaline solutions (pH ≥ 4.4), making it an essential tool in titration experiments and chemical analysis.
The chemical structure of methyl orange powder consists of an azo group (-N=N-) bridging two aromatic rings, which is responsible for its vivid coloration. This organic compound has a molecular weight of 327.33 g/mol and appears as an orange crystalline powder at room temperature. Its excellent water solubility makes it particularly useful for preparing indicator solutions in aqueous systems. Recent studies have explored its potential in novel applications beyond traditional pH indication, including its use in smart materials and environmental sensing technologies.
In educational settings, methyl orange indicator remains one of the first chemical compounds students encounter when learning about acid-base chemistry. Its clear color transition and stability make it ideal for classroom demonstrations and laboratory experiments. Many educators prefer methyl orange pH indicator over alternatives because of its sharp endpoint visibility and relatively non-toxic nature when handled properly. The compound's educational value has led to increased interest in safe chemical indicators for school laboratories, particularly in the context of modern STEM education initiatives.
The industrial applications of methyl orange dye extend beyond its use as an indicator. It has been historically employed in textile dyeing processes, though its use in this sector has declined due to the development of more specialized dyes. However, research continues into potential new uses for azo compounds like methyl orange in photodynamic therapy and molecular electronics. Scientists are particularly interested in the compound's photochromic properties and its behavior under different light conditions, which could lead to applications in light-sensitive materials and optical sensors.
From a commercial perspective, the global market for laboratory indicators including methyl orange remains stable, with consistent demand from educational institutions, research facilities, and quality control laboratories. Manufacturers have developed various formulations, including methyl orange solution 0.1% and pre-mixed indicator papers, to meet different application needs. The compound's relatively simple synthesis from sulfanilic acid and N,N-dimethylaniline contributes to its cost-effectiveness and widespread availability.
Environmental considerations have become increasingly important in discussions about chemical indicators. While methyl orange is not classified as highly hazardous, proper disposal methods are essential to prevent water contamination. Recent research has focused on developing biodegradable alternatives to traditional synthetic indicators, though methyl orange continues to be preferred for many applications due to its reliability and well-understood properties. The compound's environmental fate and potential ecotoxicity remain active areas of study in green chemistry research.
Quality control is crucial when working with methyl orange for titration. The indicator's performance can be affected by factors such as purity, concentration, and storage conditions. Reputable suppliers typically provide analytical grade methyl orange with detailed specifications including absorbance characteristics and pH transition range. For precise analytical work, users should verify the indicator's performance against standard buffers and follow recommended storage protocols to maintain its chemical stability over time.
Recent advancements in chemical sensing technologies have led to innovative applications of methyl orange in combination with modern instrumentation. Researchers have developed optical sensor arrays incorporating methyl orange for continuous pH monitoring in industrial processes. These systems leverage the compound's chromogenic properties while overcoming some limitations of traditional indicator methods. Such developments demonstrate the ongoing relevance of this classic chemical in contemporary analytical chemistry.
For those seeking methyl orange suppliers, it's important to consider factors such as purity specifications, packaging options, and regulatory compliance. The compound is available from numerous chemical manufacturers worldwide, with options ranging from small laboratory quantities to bulk industrial supplies. Many providers now offer detailed technical data sheets and safety information online, making it easier for customers to evaluate product suitability for their specific applications.
As analytical techniques continue to evolve, methyl orange maintains its position as a fundamental tool in chemical education and basic laboratory work. Its simplicity, reliability, and cost-effectiveness ensure its continued use despite the availability of more sophisticated alternatives. The compound serves as an excellent example of how classic chemical reagents can maintain relevance in modern scientific practice while adapting to new technological and environmental requirements.
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