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 ACID DYES
 
 

SR.NO.

SHADES

ORFIX-ACID

C. I. NAME

C. I. NO.

CAS NO.

1

Acid dyes

YELLOW 2GL

ACID YELLOW 17

18965

6539-98-4

2

TATRAZINE Y

ACID YELLOW 23

19140

1934-21-0

3

METANIL YELLOW R

ACID YELLOW 36

13065

587-98-4

4

YELLOW FG

ACID YELLOW 42

22910

6375-55-9

5

YELLOW 5GN

ACID YELLOW 110

--

12220-74-5

6

YELLOW 2GL

ACID YELLOW 151

13906

12715-61-6

7

YELLOW M5RL

ACID YELLOW 204

--

61814-53-7

8

Acid dyes

ORANGE GTL

ACID ORANGE 3

10385

6373-74-6

9

ORANGE II

ACID ORANGE 7

15510

633-96-5

10

Wool dyes

ORANGE 2GL

ACID ORANGE 10

16230

1936-15-8

11

ORANGE 3GL

ACID ORANGE 56

22895

6470-20-8

12

Metal Complex dyes

ORANGE G

ACID ORANGE 74

18745

10127-27-2

13

ORANGE RL

ACID ORANGE 86

--

12220-07-4

14

ORANGE 2G

ACID ORANGE 116

--

12220-10-9

15

ORANGE MRL

ACID ORANGE 142

--

61901-39-1

16

Wool dyes

RED 2GN

ACID RED 1

18050

3734-67-6

17

CRYSTA RED A

ACID RED 14

14720

3567-69-9

18

SCARLET 3R

ACID RED 18

16255

2611-82-7

19

Acid dyes

RHODAMINE B

ACID RED 52

45100

3520-42-1

20

H/CONC.

AICD RED 57

17053

70865-30-4

21

SCARLET MOO

ACID RED 73

27290

5413-75-2

22

FAST RED A

ACID RED 88

15620

1658-56-6

23

RED B2G

ACID RED 97

22890

10169-02-5

24

RED 106

ACID RED 106

18110

6844-74-2

25

RED RS

ACID RED 114

23635

6459-94-5

26

Acid dyes

MAROON V 150%

ACID RED 119

--

12220-20-1

27

RED 3RB

ACID RED 128

24125

6548-30-7

28

Fur dyes

RED 3BN

ACID RED 131

--

12234-99-0

29

RED FR

ACID RED 151

26900

6406-56-0

30

RED M2BN

ACID RED 249

18134

6416-66-6

31

RED M3R

ACID RED 362

--

61814-58-2

32

Wool dyes

GERANINE 6B

ACID VIOLET 7

18055

4321-69-1

33

VIOLET 4BN

ACID VIOLET 17

42650

4129-84-4

34

VIOLET 4SB

ACID VIOLET 49

42640

1694-09-3

35

RED 10B

ACID VIOLET 54

--

11097-74-8

36

VIOLET MBL

ACID VIOLET 92

15708

--

37

MAROON V

ACID VIOLET 119

--

--

38

PATENT BLUE VS

ACID BLUE 1

42045

116-95-0

39

PATENT BLUE AS D/CONC

ACID BLUE 7

42080

3486-30-4

40

NAVY BLUE M3R

ACID BLUE 9

42080

3486-30-4

41

BLUE D/CONC.

ACID BLUE 15

42645

5863-46-7

42

BLUE AG / CRUDE

ACID BLUE 25

15025

6408-78-2

43

BLUE 2G

ACID BLUE 40

15040

6424-85-7

44

BLUE GF

ACID BLUE 90

26360

6104-58-1

45

CYANINE BLUE R

ACID BLUE 92

13900

3861-73-2

46

Wool dyes

CYANINE BLUE 5R

ACID BLUE 113

26360

3351-05-1

47

GREEN PXE

ACID GREEN 1

10020

19381-50-1

48

FAST GREEN B

ACID GREEN 9

42100

4857-81-2

49

GREEN V 333 %

ACID GREEN 16

44025

3087-16-9

50

GREEN N

ACID GREEN 20

20495

5850-39-5

51

DARK GREEN N

ACID GREEN 68.1

--

61901-32-4

52

OLIVE MBGL

ACID GREEN 104

--

--

53

Leather Colors

OLIVE LSB

ACID GREEN 111

--

--

54

BROWN RD

ACID BROWN 14

20195

5850-16-8

55

BROWN 5

ACID BROWN 67

--

--

56

BROWN NR

ACID BROWN 75

34905

8011-86-7

57

Leather dyes

BROWN 6GG

ACID BROWN 83

20250

6408-03-3

58

BROWN MFR

ACID BROWN 97

--

--

59

BROWN HEDG

ACID BROWN 100

--

--

60

BROWN SLR

ACID BROWN 106

--

--

61

BROWN H

ACID BROWN 121

33520

6487-04-3

62

Leather dyes

BROWN GB

ACID BROWN 161

--

--

63

BROWN NT

ACID BROWN 165

--

12220-07-4

64

BROWN RD

ACID BROWN 191

--

--

65

BROWN SGR

ACID BROWN 282

--

12219-65-7

66

BROWN 5R

ACID BROWN 348

--

72827-72-6

67

BROWN 5G

ACID BROWN 349

--

72827-73-7

68

BROWN GS

ACID BROWN 425

--

--

69

BROWN MX

ACID BROWN 432

--

--

70

Fur dyes

BLACK 10BX

ACID BLACK 1

20470

1064-48-8

71

NIGROSINE BLACK CRYSTAL

ACID BLACK 2

50420

8005-03-6

72

BLACK BR

ACID BLACK 24

26370

3071-73-6

73

BLACK 58

ACID BLACK 58

--

--

74

BLACK NTR

ACID BLACK 210

--

99576-15-5

75

BLACK NB

ACID BLACK 234

30027

157577-99-6

76

BLACK FB

ACID BLACK 235

--

--

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Following special products offered In Addition to above on request.

Acid Red :  182, 184, 194, 260, 282, 305, 315, 337, 359, 363, 405, 410.
Acid Yellow : 34, 49, 59, 79, 137, 199, 219, 220, 230, 232, 241, 246.
Acid  Green : 12, 73, 101, 108, 114.
Acid  Black : 26, 60, 84, 107, 132, 164, 187.
Acid  Blue :  62, 104, 129, 171, 185, 227, 231, 281, 284, 324, 345, 348.
Acid  Orange : 51, 60, 61, 80, 82, 144, 156.

 

Acid dyes are water soluble anionic dyes which are applied to fibres such as silk, wool, nylon & modified acrylic fibres from neutral to acid dyebaths. Attachment to the fibre is attributed, at least partly, to salt formation between anionic groups in the dyes and cationic groups in the fibre. Acid dyes are not substantive to cellulosic fibres. Acid dyes are used both commercially and by the studio dyer to dye protein/animal fibers such as wool, silk, mohair, angora, alpaca and some nylons and synthetics. Acid dyes require the use of an acid such as vinegar, acetic or sulphuric acid to set the color.

Acid dyes sound scary to some novices, who imaging that the dyes themselves are caustic strong acids. In fact, the dyes are non-caustic, are in many cases non-toxic, and are named for the mild acid (such as vinegar) used in the dyeing process, and for the types of bonds they form to the fiber. Some of them are significantly more toxic than fiber reactive dyes, while others are even safe enough to eat, and are sold as food coloring.

Acid dyes are classified into several classes: 1, leveling acid or strong acid dye, 2, super milling or fast acid or neutral acid dyes 3, milling or weak acid dyes, and. Leveling Acid Dyes are been sold under the trade names of Kiton, Erio, Intracid, Sandolan, and Amacid, among others; they are also the acid dye component of all-purpose or union dyes such as Rit and Tintex, says Knutson. It's difficult now to find out which specific acid dyes fall into which of these dye classes, however. At least part of the reason is that the information is not particularly useful to the dyer.

Most histologic dyes are distinguished as acid or as basic dyes. An acid dye exists as an anion (negatively charged) in solution, while a basic dye exists as a cation (positive charge). For instance, in the hematoxylin-eosin stain (H&E), the hematoxylin-metal complex acts as a basic dye. The eosin acts as an acid dye. A very large class of dyes containing acidic groups, such as the sodium salts of sulfonic acids or phenolic groups. They are more soluble and have less tinctorial value than basic dyes but they also have greater light fastness. They do not form lakes with tannin. Acid dyes are used in dyeing leather, paper, etc., and their particular value lies in their ability to produce brighter, more uniform colors. They are normally applied from an acid dye liquor (acetic, formic, or sulfuric acid); however, unless applied from a neutral or only slightly acid dyebath, i.e., pH of 6.0 to 7.0, their use is likely to result in acid degradation of the material dyed.

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