Direct Red 31

Product Name: Direct Red 31
CAS No.: 5001-72-9
Chemical Name: Direct Red 31
Synonyms: C.I.29100;Direct pink;Pink Red 12B;Direct Pink 3B;Direct Rose BS;Solar Pink 2B.;Diphenyl Red RW;Direct Pink 12B;Pyrazol Pink 2B;Condirect Red CA
CBNumber: CB9875344
Molecular Formula: C32H21N5Na2O8S2
Formula Weight: 713.64738
MOL File: 5001-72-9.mol

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Direct Red 31 Property

EPA Substance Registry System: 2-Naphthalenesulfonic acid, 7,7'-iminobis[4-hydroxy-3-(phenylazo)-, disodium salt (5001-72-9)

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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

TRC

Product number: D494453
Product name: DirectRed31
Packaging: 10mg
Price: $45
Updated: 2021/12/16

TRC

Product number: D494453
Product name: DirectRed31
Packaging: 50mg
Price: $60
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD41049
Product name: Direct Red 31, Technical grade Dye content
Packaging: 500mg
Price: $75
Updated: 2021/12/16

AK Scientific

Product number: T411
Product name: DirectRed31,tech.
Packaging: 1g
Price: $98
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD41049
Product name: Direct Red 31, Technical grade Dye content
Packaging: 1g
Price: $122.5
Updated: 2021/12/16

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Direct Red 31 Chemical Properties,Usage,Production

Chemical Properties

Reddish brown powder. Water solubility is still good, aqueous solution is bluish red, add concentrated hydrochloric acid to produce date red precipitate, add concentrated alkali to orange-brown. Soluble in ethylene glycol ether, slightly soluble in ethanol, reddish orange, insoluble in other organic solvents. Orange to brown in concentrated sulfuric acid, produces dark blue-red precipitate after dilution; brown solution with precipitate in concentrated nitric acid. Insoluble in concentrated alkali; date red in concentrated ammonia.

Uses

Direct red 31 is a good dyeing agent for cotton fabrics.

Properties and Applications

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fading	Stain	Fading	Stain
ISO	3-4	4	2	1-2		1-2
AATCC	3-4	4	1	1		1-2

References

[1] Sawada K, Ueda M. Adsorption behavior of direct dye on cotton in non-aqueous media[J]. Dyes and pigments, 2003, 58(1): 37-40.

Direct Red 31 Preparation Products And Raw materials

Raw materials

5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid J acid

Preparation Products

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Direct Red 31 Suppliers

China 93 Germany 1 India 24 United Kingdom 1 United States 2 Global 121

TAIYUAN RHF CO.,LTD.

Tel: +86 351 7031519
Fax: +86 351 7031519
Email: sales@RHFChem.com
Country: China
ProdList: 2338
Advantage: 56

Winchem Industrial Co. Ltd

Tel: 0574-83851061
Fax: 86-574-87083209
Email: info@win-chemical.com
Country: China
ProdList: 500
Advantage: 55

Hangzhou Yuhao Chemical Technology Co., Ltd

Tel: 0571-82693216
Fax: +86-571-82880190
Email: info@yuhaochemical.com
Country: China
ProdList: 6387
Advantage: 52

Shanghai JONLN Reagent Co., Ltd.

Tel: 400-0066400 13621662912
Fax: 021-55660885
Email: 422131432@qq.com
Country: China
ProdList: 9979
Advantage: 55

Chengdu HuaXia Chemical Reagent Co. Ltd

Tel: 400-1166-196 13458535857
Fax: QQ：800101999
Email: cdhxsj@163.com
Country: China
ProdList: 13350
Advantage: 58

Hubei Jusheng Technology Co.,Ltd

Tel: 027-59599241 18871490274
Fax: 027-59599241
Email: 1400878000@qq.com
Country: China
ProdList: 9858
Advantage: 58

Alfa Chemistry

Tel: 1-516-6625404
Fax: 1-516-927-0118
Email: support@alfa-chemistry.com
Country: United States
ProdList: 9171
Advantage: 60

Shandong Xiya Chemical Co., Ltd.

Tel: 4009903999 13395398332
Fax: 0539-6365991
Email: sales@xiyashiji.com
Country: China
ProdList: 20794
Advantage: 60

Guangdong wengjiang Chemical Reagent Co., Ltd.

Tel: 0751-2886750 13927877953
Fax: 0751-2886750
Email: 3005811397@qq.com
Country: China
ProdList: 13305
Advantage: 58

Shanghai Orgchem Co.,Ltd.

Tel: +86-21-5877 1921
Fax: +86-21-5877 1925
Email: info@chemofchina.com
Country: China
ProdList: 9653
Advantage: 55

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View Lastest Price from Direct Red 31 manufacturers

TIANJIN XIANGRUI DYESTUFF CO.,LTD

Product: Direct Pink 12B, Direct Red 31 5001-72-9
Price: US $2.80/kg
Min. Order: 25kg
Purity: 99%
Supply Ability: 20 tons
Release date: 2022-10-25

Career Henan Chemical Co

Product: Direct Red 31 5001-72-9
Price: US $7.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 100KG
Release date: 2020-01-09

5001-72-9, Direct Red 31Related Search:

Direct Red 13 Direct Red 75 tetrasodium salt DIAMINE GREEN B CHLORAZOL VIOLET N Direct Yellow 12 Direct Black 19 BRILLIANT YELLOW Direct Black 38 DIRECT FAST BROWN M STILBENE YELLOW CI NO 22610 Direct Red 23 Direct Orange S DIRECT BLUE 15 Direct Blue 86 Direct Grey D DIRECT YELLOW 27 DIANIL BROWN 3GN

7,7'-iminobis[4-hydroxy-3-(phenylazo)-2-naphthalenesulfonic aci disodium sa

Benzo Rhoduline Red B

C.I. Direct red 31

C.I.Direct Red 31(29100)

Chloramine Rose B,Pyrazol Pink 2B

Diphenyl Red RW

Direct pink

Nippon Fast Red 2B

disodium 7,7'-iminobis[4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate]

Direct Pink 12B

2-Naphthalenesulfonic acid, 7,7-iminobis4-hydroxy-3-(phenylazo)-, disodium salt

Direct red 31 (C.I. 29100)

Pink Red 12B

Aizen Direct Rhoduline Red BH

Atul Direct Red 12B

Bitamine Direct Pink B

Borunil Pink D-3B

Concorde Direct Red BB

Condirect Red CA

Dinamine Direct Red 12B

Direct Pink 3B

Direct Rose BS

Dycosdirect Red 12B

Hispamine Pink 12B

Icho Direct Red 12B

Kayaku Direct Phoduline Red B

Nippon Fast Red BB

Pyrazol Pink 2B

Solar Pink 2B.

2,2'-Iminobis[5-hydroxy-6-(phenylazo)-7-naphthalenesulfonic acid]disodium salt

7,7'-Iminobis[4-hydroxy-3-(phenylazo)-2-naphthalenesulfonic acid]disodium salt

C.I.29100

Direct Rhoduline Red B

2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2)

Einecs 225-669-8

7,7'-Iminobis[4-hydroxy-3-(2-phenyldiazenyl)-2-naphthalenesulfonic acid sodium salt

Amanil Rhoduline Red B

Azine Fast Red 12BK

Belamine Fast Pink G

isodium,(3E)-4-oxo-7-[[(6E)-5-oxo-6-(phenylhydrazinylidene)-7-sulfonatonaphthalen-2-yl]amino]-3-(phenylhydrazinylidene)naphthalene-2-sulfonate

Direct Red 31 ISO 9001：2015 REACH

C.I.Direct Red 31:C.I.29100

Direct Pink 12B, Direct Red 31

Direct Peach Red 12B

5001-72-9

C32H21N5Na2O8S2

C32H21N5O8S22Na

Organics

Dyes and Pigments