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CAS No.: | 547-58-0 |
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Name: | Methyl Orange |
Article Data: | 8 |
Molecular Structure: | |
Formula: | C14H14N3NaO3S |
Molecular Weight: | 327.339 |
Synonyms: | Benzenesulfonicacid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt (9CI);Benzenesulfonicacid, p-[[p-(dimethylamino)phenyl]azo]-, sodium salt (8CI);Orange III (6CI);4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt;Acid Orange 52;AlbionMethyl Orange;C.I. 13025;C.I. Acid Orange 52;Diazoben;Eniamethyl Orange;Gold orange;Helianthine;Helianthine B;KCA Methyl Orange;Methyl Orange B;Orange 3;Sodium 4-(dimethylamino)azobenzene-4'-sulfonate;Sodium 4-[4-(dimethylamino)phenylazo]benzenesulfonate;Sodium4'-(dimethylamino)azobenzene-4-sulfonate;Sodium p-[[p-(dimethylamino)phenyl]azo]benzenesulfonate;Sodium p-dimethylaminoazobenzenesulfonate;Tropaeolin D; |
EINECS: | 208-925-3 |
Density: | 0.987 g/mL at 25 °C |
Melting Point: | 300 °C |
Boiling Point: | 100oC |
Flash Point: | 37 °C |
Solubility: | Soluble in ethanol. Partially soluble in hot water. Slightly soluble in cold water and pyrimidine. Insoluble in ether and alcohol. |
Appearance: | orange-yellow powder |
Hazard Symbols: | T |
Risk Codes: | 25-10 |
Safety: | 45-24/25-16-36/37/39 |
Transport Information: | UN 3143 6.1/PG 3 |
PSA: | 93.54000 |
LogP: | 4.15290 |
Conditions | Yield |
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Stage #1: N,N-dimethyl-aniline With hydrogenchloride In water; N,N-dimethyl-formamide at 25℃; Stage #2: With sodium nitrite In water; N,N-dimethyl-formamide Stage #3: 4-aminobenzene sulfonic acid In water; N,N-dimethyl-formamide at 25℃; for 0.00333333h; | 95.01% |
diazomethane
diethyl ether
4'-aminoazobenzene-4-sulfonic acid
A
4-(4-dimethylamino-phenylazo)-benzenesulfonic acid methyl ester
B
methyl orange
4-sulfobenzenediazonium
4,4'-methylene-bis(N,N-dimethylaniline)
A
formaldehyd
B
methyl orange
Methyl Orange anion
methyl orange
Conditions | Yield |
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With sodium hydroxide; sodium cation In water Thermodynamic data; pH 12, 6 h; partition coefficient also investigated; ΔH0, ΔS0, ΔG0; |
Conditions | Yield |
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In water at 25℃; Equilibrium constant; | |
In methanol; water at 25℃; Equilibrium constant; | |
In water; dimethyl sulfoxide at 25℃; Equilibrium constant; |
4-(4-Dimethylamino-phenylazo)-benzenesulfonatehexadecyl-trimethyl-ammonium;
A
methyl orange
B
cetyltrimethylammonim bromide
Conditions | Yield |
---|---|
With sodium bromide at 19.9℃; Equilibrium constant; var. temps.; |
Conditions | Yield |
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With sodium bromide at 19.9℃; Equilibrium constant; var. temps.; |
Conditions | Yield |
---|---|
With sodium bromide at 19.9℃; Equilibrium constant; var. temps.; |
Conditions | Yield |
---|---|
With sodium chloride at 19.9℃; Equilibrium constant; var. temps.; |
Conditions | Yield |
---|---|
With sodium bromide at 19.9℃; Equilibrium constant; var. temps.; |
1. | mma-ssp 100 mg/L | PMRSDJ Progress in Mutation Research. 1 (1981),424. | ||
2. | dns-hmn:fbr 4 mg/L | PMRSDJ Progress in Mutation Research. 1 (1981),528. | ||
3. | orl-rat LD50:60 mg/kg | 85JCAE Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1306. | ||
4. | ipr-mus LD50:101 mg/kg | PMRSDJ Progress in Mutation Research. 1 (1981),682. |