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PH indicator

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Dye » PH indicator
Selected category: PH indicator
Total count of records found: 65. Showed records: 20.

1. Metacresol purple

Molecular formula: C21H18O5S CAS# 2303-01-7
1.22.8 7.49 pH
Names
English:
2,2'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(5-methylphenol)(IUPAC)
;
3,3-Bis(4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(3-methylphenol)(IUPAC)
;
4-[3-(4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenol(IUPAC)
;
Cresol purple
;
EINECS:218-960-6
;
Metacresol purple [Wiki]
;
NSC 9607
;
Phenol, 2,2'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-(CAS)
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-
;
UNII-85ODZ58K3D
;
m-Cresol Purple
;
m-Cresolsulfonephthalein
;
m-Cresolsulfonphthalein
;
`//`-`\\/=\_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q></\/`||</OH>`\`//|\|>`\`|`\`//<`\HO>|\\/`|/

2. Quinaldine red

Molecular formula: C21H23IN2 CAS# 117-92-0
Categories: pH indicator , Organic salt
12.2 pH
Names
English:
2-[2-[4-(Dimethylamino)phenyl]ethenyl]-1-ethylquinolinium Iodide
;
2-[p-(Dimethylamino)styryl]-1-ethylquinolinium Iodide
;
2-{(E)-2-[4-(Dimethylamino)phenyl]vinyl}-1-ethylquinolinium iodide(IUPAC)
;
2-{2-[4-(Dimethylamino)phenyl]vinyl}-1-ethylquinolinium iodide
;
4-[(E)-2-(1-ethylquinolin-1-ium-2-yl)ethenyl]-N,N-dimethylaniline;iodide(IUPAC)
;
Chinaldinrot
;
EINECS 204-221-5
;
Eastman No. 1361
;
NSC 36339
;
Quinaldine red [Wiki]
;
Quinolinium, 2-[(E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-ethyl-, iodide (1:1)(CAS)
;
Quinolinium, 2-[2-[4- (dimethylamino)phenyl]ethenyl]-1-ethyl-, iodide
;
Quinolinium, 2-[p- (dimethylamino)styryl]-1-ethyl-, iodide
;
UNII-Z70656T34N
;
quinolinium, 2-[2-[4-(dimethylamino)phenyl]ethenyl]-1-ethyl-, iodide (1:1)
;
α-(p-Dimethylaminophenylethylene)quinoline ethiodide
;
I^-_(x-1,y1,N0)N^+<`|`\H3C>\|`//`\`//`\`||/\\<|>/\/\\/`||/\\<|`//`\>/N<`|CH3>\CH3

3. Cresol Red

Molecular formula: C21H18O5S CAS# 1733-12-6
Categories: pH indicator , Phenols
0.21.8 7.28.8 pH
Names
English:
2-Cresolsulfonephthalein
;
3',3''-Dimethylphenolsulfonephthalein
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-methylphenol)(IUPAC)
;
4,4'-(3h-2,1-benzoxathiol-3-ylidene)bis(2-methylphenol) s,s-dioxide
;
4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-methylphenol(IUPAC)
;
Cresol Red [Wiki]
;
Cresolsulfophthalein
;
EINECS:217-064-2
;
NSC 7224
;
O-CRESOLSULFONPHTHALEIN
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-(CAS)
;
Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-, S,S-dioxide (9CI)
;
UNII-839K2R4B8K
;
[1733-12-6]
;
a-Hydroxy-a,a-bis(4-hydroxy-m-tolyl)-o-toluenesulfonic Acid g-Sultone
;
o-Cresol Red
;
o-Cresolsulfonephthalein
;
`//`\`||/\\|_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q><-\\-<\>//<-OH>`\`=`/>`|/`||`\<`|OH>`//<`\>|\\
`/`=`\//-\\_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q></\//`|</OH>`\\<`|>`/||>`\`//`\`||<`\HO>/<`|>\\|

4. Acid orange 5

Molecular formula: C18H14N3NaO3S CAS# 554-73-4
1.43.2 pH
Names
English:
4-[[4-(Phenylamino)phenyl]azo]benzenesulfonic Acid Monosodium Salt
;
Acid Yellow D
;
Acid orange 5 [Wiki]
;
Benzenesulfonic acid, 4-[(E)-2-[4-(phenylamino)phenyl]diazenyl]-, sodium salt (1:1)(CAS)
;
Benzenesulfonic acid, 4-[[4- (phenylamino)phenyl]azo]-, monosodium salt
;
Benzenesulfonic acid, p-[(p-anilinophenyl)azo]-, monosodium salt
;
Benzenesulfonic acid, p-[(p-anilinophenyl)azo]-, sodium salt
;
C.I. 13080
;
Diphenylamine Orange
;
EINECS:209-071-4
;
Fast yellow
;
Orange GS
;
Orange IV
;
Orange N
;
OrangeIV
;
Sodium 4-[(E)-(4-anilinophenyl)diazenyl]benzenesulfonate(IUPAC)
;
Sodium p-[(p-Anilinophenyl)azo]benzenesulfonate
;
Solar Orange IV
;
Tropaeolin
;
Tropaeolin OO
;
Tropeolin OO
;
UNII-VR8Q3R288W
;
p-[(p-Anilinophenyl)azo]benzenesulfonic Acid Sodium Salt
;
sodium 4-[4-(Anilino)phenylazo]benzenesulfonate
;
sodium;4-[(4-anilinophenyl)diazenyl]benzenesulfonate(IUPAC)
;
`/`\\`|//\||\N<_(y.5)H>/\\/`||<`\`//|>/N\\N/\\/`||<`\`//|>/S<_(A-120,N2)O><_(A-60,N2)O>\O^-\0Na^+
`/`=`\//-\\-N<_(y-.5)H>-//-\\<`/`=`\>-N=N-/=\<`//`-`\\>-S<`||O><||O>-O^-# -0Na^+

5. Alizarine Yellow R

Molecular formula: C13H8N3NaO5 CAS# 1718-34-9
10.112 pH
Names
English:
Alizarine Yellow R [Wiki]
;
Benzoic acid, 2-hydroxy-5-[(E)-2-(4-nitrophenyl)diazenyl]-, sodium salt (1:1)(CAS)
;
C.I. Mordant Orange 1
;
EINECS:217-002-4
;
Salicylic acid, 5-[(p-nitrophenyl)azo]-, monosodium salt
;
Salicylic acid, 5-[(p-nitrophenyl)azo]-, sodium salt
;
Sodium 2-hydroxy-5-[(E)-(4-nitrophenyl)diazenyl]benzoate(IUPAC)
;
[1718-34-9]
;
benzoic acid, 2-hydroxy-5-[(E)-(4-nitrophenyl)azo]-, monosodium salt
;
O`^-/N^+`|O|\||\//<`|`\\`/>\N//N\|\\/<\OH>`||<`\`//>/`|O|\O^-_(x1.4,N0)Na^+
O`^-/N^+<`\\O>-\\-//<`\`=`/>-N//N-/=\<-OH>`//<`-`\\>\<`//O>-O^-\0Na^+

6. Aurin

Molecular formula: C19H14O3 CAS# 603-45-2
Categories: Ketone , pH indicator , Phenols
56.8 pH
Names
English:
2,5-Cyclohexadien-1-one, 4-(bis(4-hydroxyphenyl)methylene)-
;
2,5-Cyclohexadien-1-one, 4-[bis(4-hydroxyphenyl)methylene]-(CAS)
;
4,4'-Dihydroxyfuchsone
;
4-(Bis(p-hydroxyphenyl)methylene)cyclohexa-2,5-dien-1-one
;
4-(p,p'-Dihydroxybenzhydrylidene)-2,5-cyclohexadien-1-one
;
4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadien-1-one(IUPAC)
;
4-[bis(4-hydroxyphenyl)methylene]cyclohexa-2,5-dien-1-one
;
4-[bis(4-hydroxyphenyl)methylidene]cyclohexa-2,5-dien-1-one(IUPAC)
;
Aurin [Wiki]
;
Aurin No. 555
;
Aurine
;
C.I. 43800
;
CI 43800
;
Corallin [Wiki]
;
Corallin yellow
;
EINECS:210-041-8
;
NSC 7805
;
Pararosolic Acid
;
Rosalic Acid
;
UNII-85N4AK3JAU
;
p-Rosolic acid
;
p-rosolic acin
;
`//`\`||<`\HO>/\\|\|`/||\|O`|/`||`\`|/\\/`||</OH>`\`//|
O=/=\<`/`=`\>=</=/`\\</OH>`-`//\>\-\\`/<\OH>`=`\//

7. Bromocresol green

Molecular formula: C21H14Br4O5S CAS# 76-60-8
3.85.4 pH
Names
English:
2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenol(IUPAC)
;
3',3",5',5"-tetrabromo-m-cresolsulfonapthalein
;
3,3',5,5'-Tetrabromo-m-cresolsulfonphthalein
;
3′,3′′,5′,5′′-Tetrabromo-m-cresolsulfonephthalein
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2,6-dibromo-3-methylphenol)(IUPAC)
;
4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2,6-dibromo-3-methylphenol] S,S-Dioxide
;
BBOT
;
Bromcresol Green
;
Bromocresol green [Wiki]
;
EINECS:200-972-8
;
NSC 7817
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-3-methyl-(CAS)
;
UNII-8YGN0Y942M
;
a,a-Bis(3,5-dibromo-4-hydroxy-o-tolyl)-a-hydroxytoluenesulfonic Acid g-Sultone
;
m-Cresol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-, S,S-dioxide (8CI)
;
_(A135,w+)`=`/\\-//<`\>-S<||O><=O>`|O_(d-)#1<_(A-50)_pp6<_p6>_q6<_p6Br>_qq6<_p6OH>_q6<_p6Br>_qq6_q6>_(A-130)_q6<_q6>_pp6<_q6Br>_p6<_q6HO>_pp6<_q6Br>_p6_pp6
_(A-40)/`|`\\<`|Br>`/<`\HO>||<`/Br>\/\:a</\<|>//<\Br>`|</OH>`\\<`|Br>`/||>_(A135)\`/`=`\//-\-S<||O><_(A20,N2)O>_(A-80)O_#a

8. Bromocresol purple

Molecular formula: C21H16Br2O5S CAS# 115-40-2
5.26.8 pH
Names
English:
2-bromo-4-[3-(3-bromo-4-hydroxy-5-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-methylphenol(IUPAC)
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-methylphenol)(IUPAC)
;
4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-bromo-6-methylphenol] S,S-Dioxide
;
5,5'-DIBROMO-O-CRESOLSULFONPHTHALEIN
;
5′,5″-dibromo-o-cresolsulfophthalein
;
BCP
;
Bromcresol Purple
;
Bromocresol purple [Wiki]
;
EINECS:204-087-8
;
HSDB 7729
;
NSC 374134
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-methyl-
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-methyl-(CAS)
;
Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-methyl-, S,S-dioxide
;
UNII-201C22C3EC
;
[115-40-2]
;
\\/`||`\`//|_pS<_(a-14,N2)O><_(a-94,N2)O>_pO_p<_p>@:b(a,b,c,d)<_(a&a)_qq6_p6<_q6&b>_pp6<_q6&c>_p6<_q6&d>_pp6_p6>@(-94,Br,HO)@b(-14,,OH,Br)
`/`=<`/>`\<`-HO>//<`\Br>-\\-<|\||<\>`/<|OH>`\\<`/Br>`|//>_(A12)_q_p6_pp6_p6_pp6_p6_p6_qS<_(a14,N2)O><_(a94,N2)O>_qO_q

9. Bromophenol blue

Molecular formula: C19H10Br4O5S CAS# 115-39-9
34.6 pH
Names
English:
2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol(IUPAC)
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2,6-dibromophenol)(IUPAC)
;
4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2,6-dibromophenol] S,S-Dioxide
;
Albutest
;
Bromophenol Blue [Wiki]
;
Bromophenol blue [Wiki]
;
Bromphenol Blue
;
EINECS:204-086-2
;
NSC 7818
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-(CAS)
;
Tetrabromphenol Blue
;
UNII-0R2969YC90
;
a,a-Bis(3,5-dibromo-4-hydroxyphenyl)-a-hydroxy-o-toluenesulfonicAcid g-Sultone
;
`/`\\`|//\||_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q>@:e(a,o)<_(A&a)_pp6_q6<_p6Br>_qq6<_p6&o>_q6<_p6Br>_qq6_q6>@(-30,OH)@e(-120,HO)
||\//`|`\\`/_pS<_(a-94,N2)O><_(a-24,N2)O>_pO_p<_p><-//-</Br>\\<-OH>`/<\Br>`=`\>`|/`||</Br>`\<`|OH>`//<`\Br>|\\

10. Bromothymol blue

Molecular formula: C27H28Br2O5S CAS# 76-59-5
-10 5.86.7 6.77.6 pH
Names
English:
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-isopropyl-3-methylphenol)(IUPAC)
;
4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis[2-bromo-3-methyl-6-(propan-2-yl)phenol]
;
4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)phenol] S,S-Dioxide
;
BTB
;
Bromothymol blue [Wiki]
;
Bromthymol Blue
;
EINECS:200-971-2
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-(CAS)
;
Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide
;
Thymol, 6,6'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-, S,S-dioxide (8CI)
;
[76-59-5]
;
a,a-Bis(6-bromo-5-hydroxycarvacryl)-a-hydroxy-o-toluenesulfonic Acid g-Sultone
;
bromothymol sulfone phthalein
;
`//`\`||/\\|_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q>@:e(a,o,p,q)<_(A&a)_(a&p60)_(a&q60,N2)<_(a&p60)<_(a&p60)>_(a&q60)>_(a&q60)<_(a&p60)&o>_(a&q60,N2)<_(a&p60)Br>_(a&q60)<_(a&p60)>_(a&q60,N2)>@(-100,HO,,-)@e(0,OH,-)

11. Chlorophenol red

Molecular formula: C19H12Cl2O5S CAS# 4430-20-0
4.86.7 pH
Names
English:
2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol(IUPAC)
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3,3-diyl)bis(2-chlorbenzolol)
;
4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-chlorophenol)(IUPAC)
;
4,4'-(3H-2,1-BENZOXATHIOL-3-YLIDENE)BIS(2-CHLOROPHENOL) S,S-DIOXIDE
;
CPR
;
Chlorophenol red [Wiki]
;
EINECS:224-619-2
;
NSC 7828
;
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-chloro-(CAS)
;
`\\`/||\//`|_pS<_(a-94,N2)O><_(a-24,N2)O>_pO_p<_p><`/`=`/\\<`/HO>-<\Cl>//`\>\||\//<\OH>`|</Cl>`\\`/
`/`=`\//-\\_qS<_(a94,N2)O><_(a24,N2)O>_qO_q<_q></\//<\Cl>`|</OH>`\\`/||>`\`//`\<`/Cl>`||<`\HO>/\\|

12. Chrysoine resorcinol

Molecular formula: C12H9N2NaO5S CAS# 547-57-9
1112.7 pH
Names
English:
4-[(2,4-Dihydroxyphenyl)azo]benzenesulfonic Acid Monosodium Salt
;
Acid Orange 6
;
Benzenesulfonic acid, 4-[(E)-2-(2,4-dihydroxyphenyl)diazenyl]-, sodium salt (1:1)(CAS)
;
Benzenesulfonic acid, p-[(2,4-dihydroxyphenyl)azo]-, sodium salt
;
C.I. 14270
;
C.I. Acid Orange 6
;
C.I. Acid Orange 6 monosodium salt
;
C.I. Food Yellow 8
;
Chrysoine
;
Chrysoine resorcinol [Wiki]
;
Chrysoine resorcinol [Wiki]
;
EINECS:208-924-8
;
Gold Yellow
;
Orange VI
;
Resorcin yellow
;
Resorcinol Yellow
;
Sodium 4-[(E)-(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate(IUPAC)
;
Sodium p-(2,4-Dihydroxyphenylazo)benzenesulfonate
;
Tropaeolin O
;
Tropaeolin R
;
Tropaeoline
;
Yellow T
;
sodium 4-[2-(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate
;
|<\OH>`//`\<`/HO>`||/\\/N\\N/\\/`||<`\`//|>/S<_qq4O><_pp4O>/O^-\0Na^+
HO-/=</OH>\<`//`-`\\>-N=N-\\-//<`\`=`/>-SO3Na
$L(1.4)Na^+`/hO`^-$L()|S<=O><`=O>|\||`/<`\\`|//>|NH`/N||`/||\|O`|/`||</OH>`\

13. Congo red

Molecular formula: C32H22N6Na2O6S2 CAS# 573-58-0
35.2 pH
Names
English:
1-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diyldi(E)-2,1-diazenediyl]bis[4-amino-, sodium salt (1:2)(CAS)
;
1-naphthalenesulfonic acid, 3,3'-([1,1'-biphenyl]-4,4'-diyldiazo)bis[4-amino-, disodium salt
;
3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-amino-1-naphthalenesulfonic Acid] Disodium Salt
;
CI Direct Red 28
;
Congo Red (C.I. 22120)
;
Congo red [Wiki]
;
Disodium 3,3'-[4,4'-biphenyldiyldi(E)-2,1-diazenediyl]bis(4-amino-1-naphthalenesulfonate)(IUPAC)
;
Disodium 3,3'-[biphenyl-4,4'-diyldi(E)diazene-2,1-diyl]bis(4-aminonaphthalene-1-sulfonate)
;
EINECS:209-358-4
;
Haemomedical
;
NSC 56651
;
NSC 7232
;
Sodium Diphenyldiazo-bis-a-naphthylaminesulfonate
;
UNII-3U05FHG59S
;
disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate(IUPAC)
;
NH2`/\`/`=<`/S<_pp6O><_(a0,N2)O>\O^-_(x1.5,N0)Na^+>`\/`\`=`/\\-/-\-N\\N-//-\\<`/`=`\>-\\-//<`\`=`/>-N\\N-\-/-\\`/`=`\/`\</S<_(a0,N2)O><_qq6O>_p6O^-_(x1.5,N0)Na^+>`=`/\`/H2N

14. o-Cresolphthalein

Molecular formula: C22H18O4 CAS# 596-27-0
Categories: pH indicator , Phenols
8.29.8 pH
Names
English:
1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-(CAS)
;
3,3'-DIMETHYLPHENOLPHTHALEIN
;
3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
;
3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3H)-one(IUPAC)
;
3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one(IUPAC)
;
Cresolphthalein
;
EINECS:209-881-8
;
UNII-XOU2D9049G
;
[596-27-0]
;
o-Cresolphthalein [Wiki]
;
`//`\`||/\\|_q<_(a54,N2)O>_qO_q<_q><-\\-<\CH3>//<-OH>`\`=`/>`|/`||`\<`|HO>`//<`\H3C>|\\
`-_p<_qq6_q6_qq6_q6_qq6>_p<_pO_p_(a-54,N2)O></\//`|</OH>`\\<`|>`/||>`\`//`\`||<`\HO>/<`|>\\|

15. Crystal violet

Molecular formula: C25H30ClN3 CAS# 548-62-9
-12 pH
Names
English:
4-{Bis[4-(dimethylamino)phenyl]methylene}-N,N-dimethyl-2,5-cyclohexadien-1-iminium chloride(IUPAC)
;
Aizen Crystal Violet Base
;
Aniline violet
;
Basic violet 3
;
Basonyl Violet 610
;
Baszol Violet 57L
;
Brilliant Violet 58
;
C.I. Basic violet 3
;
Caswell No. 264A
;
Crystal Violet Extra Pure APNX
;
Crystal Violet HL 2
;
Crystal violet [Wiki]
;
Gentian Violet B
;
Hexamethyl-p-rosaniline chloride
;
Hexamethyl-p-rosaniline chloride (Gentian violet)
;
Methanaminium, N-(4-(bis(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, chloride
;
Methanaminium, N-[4-[bis[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride (1:1)(CAS)
;
Methyl Violet 10BNS
;
Methylrosanilide chloride
;
N,N,N',N',N'',N''-Hexamethylpararosaniline Chloride
;
N-(4-{Bis[4-(dimethylamino)phenyl]methylene}-2,5-cyclohexadien-1-ylidene)-N-methylmethanaminium chloride
;
N-(4-{Bis[4-(dimethylamino)phenyl]methylene}cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminium chloride
;
N-(4-{bis[4-(dimethylamino)phenyl]methylidene}cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminium chloride
;
N-[4-[Bis[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methylmethanaminium Chloride
;
NCI C55969
;
Oxyozyl Paper Blue R
;
Pentamethylpararosaniline chloride
;
Pyoktanin
;
Sanyo Fanal Violet R
;
Tetramethylpararosaniline chloride
;
UNII-J4Z741D6O5
;
[4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium;chloride(IUPAC)
;
gentian violet
;
hexamethyl pararosaniline chloride
;
methyl violet 10B
;
methylrosanilinium chloride
;
violet 5bo base
;
\N</>|\\|`//`<`\`||/>|\|\\/\N^+<|></><_(y-2,N0)Cl^->`\`|`\\`/`\`/|`//`\<`||/\\>`/N<|>`\
H3C|N<`/H3C>\/\\|<`//`\`||>\|`/||\|N^+<`/H3C><\CH3><_(x2,y-.5,N0)Cl^->`|/`||`\`|/\//`|</N<`|CH3>\CH3>`\\`/||
$slope(60)`/`-`\<`-N<`\H3C>`/H3C>/-\_o-\`/\\-\N^+<_q6CH3><`/H3C><\0Cl^->`\/`\\`-`\/-/`\</N<`\H3C>_p6CH3>`-`/\_o

16. Indigo carmine

Molecular formula: C16H8N2Na2O8S2 CAS# 860-22-0
11.413 pH
Names
English:
1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, sodium salt, (2E)- (1:2)(CAS)
;
1H-indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt, (2E)-
;
4 G
;
5,5′-indigodisulfonic acid sodium salt
;
Brilliant Indigo
;
C Blue 2
;
C.I. 73015
;
C.I. Acid Blue 74
;
Disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)-5-indolinesulfonate(IUPAC)
;
Disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)indoline-5-sulfonate
;
Disodium 5,5'-indigotin disulfonate
;
E 132
;
E132
;
EINECS:212-728-8
;
FD & C blue no. 2
;
Food Blue 1
;
Food Blue 2
;
Food Blue No. 2
;
Indigo carmine [Wiki]
;
Indigo-5,5'-disulfonic acid disodium salt
;
Indigo-5,5′-disulfonic acid disodium salt
;
Indigotindisulfonate Sodium
;
Sicovit Indigotin 85
;
disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)-2,3-dihydro-1H-indole-5-sulfonate
;
indigotine
;
Na^+_(x1,y1,N0)O`^-/S<_(A110,N2)O>`|O|\||\//`|<`\\`/>_p<_(a-54,N2)O:a>_p<_pN<_(a-54)H:b>_p>=_(a54)<_(a54,N2)O-h#b>_q_qq<_qN<_q>_(a54)H-h#a>/\\|<`//`\>\S<_(A-70,N2)O>|O`|/O^-_(x1,y1,N0)Na^+
Na^+_(x1.5,N0)O`^-\S<_qq4O><_pp4O>\||\//`|<`\\`/>_p<_(a-54,N2)O>_p<_pN<_(y.5)H>_p>=_(a54)<_(a54,N2)O>_q_q<_qN<_(y-.5)H>_q>//\||<`/`\\>\S<_qq4O><_pp4O>\O^-_(x1.2,N0)Na^+

17. 7-Hydroxy-1H-phenoxazin-1-one

Molecular formula: C12H7NO3 CAS# 1393-92-6
4.58.3 pH
Names
English:
1H-Phenoxazin-1-one, 7-hydroxy-(CAS)
;
7-Hydroxy-1H-phenoxazin-1-one(IUPAC)
;
7-hydroxyphenoxazone
;
Litmus [Wiki]
;
/`|O|\||`/`\\`|`\\N`/|`/`\\<`/HO>`|//\|\O/

18. Malachite green

Molecular formula: C23H25ClN2 CAS# 569-64-2
0.21.8 11.513.2 pH
Names
English:
4-[(4-dimethylaminophenyl)phenyl-methyl]-N,N-dimethylaniline(IUPAC)
;
4-{[4-(Dimethylamino)phenyl](phenyl)methylene}-N,N-dimethyl-2,5-cyclohexadien-1-iminium chloride(IUPAC)
;
Aniline green
;
Basic green 4
;
Benzal Green
;
Burma Green B
;
China Green
;
Diamond green B
;
Grenoble Green
;
Malachite green [Wiki]
;
Malachite green chloride
;
Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride(CAS)
;
Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride (1:1)(CAS)
;
Victoria Green
;
Victoria green B
;
H3C\N<|CH3>/`|/\|`//`\`|/0\/`|//`|`\\`/||\|0\\|\\/<`|`\\`/>\\N^+<|CH3>/CH3_(x1.5,N0)Cl^-
Cl^-_(A45,N0)N^+<`/><`|>\\|\\/<`|`\\`/>\\<|\||`/`\\`|//>/`|/\|`//`\`|/0\/N<`|>\

19. Metanil Yellow

Molecular formula: C18H14N3NaO3S CAS# 587-98-4
1.22.3 pH
Names
English:
3-(4-Anilinophenylazo)benzenesulfonic acid sodium salt
;
3-[[4-(Phenylamino)phenyl]azo]benzenesulfonic Acid Monosodium Salt
;
Acid Metanil Yellow
;
Acid Yellow 36
;
Benzenesulfonic acid, 3-[(E)-2-[4-(phenylamino)phenyl]diazenyl]-, sodium salt (1:1)(CAS)
;
Benzenesulfonic acid, 3-[[4- (phenylamino)phenyl]azo]-, monosodium salt
;
Benzenesulfonic acid, m-[(p-anilinophenyl)azo]-, sodium salt
;
C.I. 13065
;
EINECS:209-608-2
;
Ext. D & C Yellow No.1
;
Metanil Yellow [Wiki]
;
Monoazo
;
NSC 7337
;
NSC 9292
;
Sodium 3-[(E)-(4-anilinophenyl)diazenyl]benzenesulfonate(IUPAC)
;
Sodium Salt of Metanilylazodiphenylamine
;
Tropaeolin G
;
m-[(p-Anilinophenyl)azo]benzenesulfonic Acid Sodium Salt
;
sodium 3-{(E)-[4-(phenylamino)phenyl]diazenyl}benzenesulfonate
;
sodium;3-[(4-anilinophenyl)diazenyl]benzenesulfonate(IUPAC)
;
`//`\`||/\\|\N<_(y.5)H>/`||/\\|<`//`\>\N//N\||\//<`|`\\`/>\S<_(A120,N2)O><_(A60,N2)O>/O^-`|0Na^+

20. Methyl orange

Molecular formula: C14H14N3NaO3S CAS# 547-58-0
3.14.4 pH
Names
English:
4-(4-Dimethylaminophenylazo)benzenesulfonate de sodium
;
4-DIMETHYLAMINOAZOBENZENE, 4'-SULFONIC ACID SODIUM SALT
;
4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt
;
4-[[4-(Dimethylamino)phenyl]azo]benzenesulfonic acid sodium salt
;
Acid Orange 52
;
Albion Methyl Orange
;
Benzenesulfonic acid, 4-[2-[4-(dimethylamino)phenyl]diazenyl]-, sodium salt (1:1)
;
Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-, sodium salt(CAS)
;
Benzenesulfonic acid, p-[[p-(dimethylamino)phenyl]azo]-, sodium salt
;
C.I. 13025
;
C.I. Acid Orange 52
;
Diazoben
;
EINECS:208-925-3
;
Eniamethyl Orange
;
Gold Orange
;
Helianthine
;
Helianthine B
;
KCA Methyl Orange
;
Methyl Orange B
;
Methyl orange [Wiki]
;
NSC 9416
;
Natrium-4-(4-dimethylaminophenylazo)benzolsulfonat
;
Orange 3
;
Orange III
;
P-(P-DIMETHYLAMINOPHENYLAZO)-BENZENE-SULFONATE OF SODIUM
;
Sodium 4'-(dimethylamino)azobenzene-4-sulfonate
;
Sodium 4-(dimethylamino)azobenzene-4'-sulfonate
;
Sodium 4-[(4-dimethylamino)phenylazo]benzenesulfonate
;
Sodium 4-[(4dimethylamino)phenyldiazenyl]benzenesulfonate(IUPAC)
;
Sodium 4-[4-(dimethylamino)phenylazo]benzenesulfonate
;
Sodium p-[[p-(dimethylamino)phenyl]azo]benzenesulfonate
;
Sodium p-dimethylaminoazobenzenesulfonate
;
Tropaeolin D
;
metilnaranja
;
sodium 4-(4-dimethylaminophenylazo)benzenesulphonate
;
$slope(60)\N<`/>-/-\`/`=`\/-0\-N//N-\-/`\`=`/\-0/-S<_(A-75,N2)O><_(A-15,N2)O>\O^-_(x1,N0)Na^+
SO3Na|\|`/`\`||/\|0`/|N\\N|\|`/`\`||/\|0`/|N<`/H3C>\CH3
H3C\N<|CH3>/\/`|`\`//|\/0`|/N\\N/\/`|`\`//|\/0`|/S`|O|<||O>-ONa