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o-Dianisidine

Product Name
o-Dianisidine
CAS No.
119-90-4
Chemical Name
o-Dianisidine
Synonyms
ai3-00864;c.i.24110;bluebasenb;bluebnbase;C.I. 24110;Dianisidine;cellitazolb;FAST BLUE B;Blue Base NB;Blue BN Base
CBNumber
CB7385595
Molecular Formula
C14H16N2O2
Formula Weight
244.29
MOL File
119-90-4.mol
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o-Dianisidine Property

Melting point:
137-138 °C(lit.)
Boiling point:
387.21°C (rough estimate)
Density 
1.1079 (rough estimate)
refractive index 
1.6000 (estimate)
Flash point:
403 °F
storage temp. 
Store at RT.
solubility 
H2O: slightly soluble
form 
Crystalline Powder
pka
4.71±0.10(Predicted)
Colour Index 
37235
color 
Pink to beige-brown
Water Solubility 
Soluble in alcohol, benzene, ether, chloroform, acetone, most organic solvents and lipids. Slightly soluble in water.
Merck 
14,2991
BRN 
1879884
CAS DataBase Reference
119-90-4(CAS DataBase Reference)
IARC
2B (Vol. 4, Sup 7) 1987
NIST Chemistry Reference
Benzidine, 3,3'-dimethoxy-(119-90-4)
EPA Substance Registry System
3,3'-Dimethoxybenzidine (119-90-4)
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Safety

Hazard Codes 
T
Risk Statements 
45-22
Safety Statements 
53-45
RIDADR 
2811
WGK Germany 
3
RTECS 
DD0875000
TSCA 
Yes
HazardClass 
6.1(a)
PackingGroup 
II
HS Code 
29222990
Hazardous Substances Data
119-90-4(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H341Suspected of causing genetic defects

H350May cause cancer

H351Suspected of causing cancer

H371May cause damage to organs

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
33430
Product name
o-Dianisidine
Purity
for spectrophotometric det. of Au, NO2-, Ce(IV), for the detection of Au, Co, Cu, SCN-, V, ≥97.0%
Packaging
10g
Price
$46.6
Updated
2020/08/18
Sigma-Aldrich
Product number
33430
Product name
o-Dianisidine
Purity
for spectrophotometric det. of Au, NO2-, Ce(IV), for the detection of Au, Co, Cu, SCN-, V, ≥97.0%
Packaging
50g
Price
$175
Updated
2020/08/18
TCI Chemical
Product number
D1344
Product name
o-Dianisidine
Purity
>98.0%(HPLC)
Packaging
25g
Price
$52
Updated
2020/06/24
TCI Chemical
Product number
D1344
Product name
o-Dianisidine
Purity
>98.0%(HPLC)
Packaging
100g
Price
$137
Updated
2020/06/24
Alfa Aesar
Product number
A17150
Product name
o-Dianisidine, 98+%
Packaging
25g
Price
$75.1
Updated
2020/06/24
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o-Dianisidine Chemical Properties,Usage,Production

Chemical Properties

o-Dianisidine, crystallizes dimorphically, rarely in needles, with mp 133°C , often in flakes with mp 137-138°C . It forms colorless crystals, but commercial products have a tinge of violet. It is sparingly soluble in water but soluble in alcohol, ether, and benzene. One gram of ethyl acetate dissolves 0.285 g of o-dianisidine at 73°C .

The pure compound is stable upon exposure to air, but commercial products turn violet. o-Dianisidine is resistant to water but sensitive to oxidizing agents.

Uses

o-Dianisidine is a starting material for the production of disazo dyes and pigments.
Like benzidine and o-tolidine, o-dianisidine forms colors with numerous oxidizing agents, e.g., copper, cobalt, and gold ions. o-Dianisidine is quantitatively determined by titration with nitrite using potassium iodide and starch paper as the indicator. o-Dianisidine can be detected in the urine using potassium 1,2-naphthoquinone4-sulfonate after extraction. A rapid and easy method is based on the color formed with cyanogen bromide. Its detection limit is 0.05 mg/kg.
The free o-dianisidine base and the dihydrochloride are marketed in moist forms with a 10-30% water content.

Uses

o-Dianisidine is used almost exclusively as a chemical intermediate for producing dyes and pigments. In 1971, the Society of Dyers and Colourists reported its use in the production of 89 dyes (see Dyes Metabolized to o-Dianisidine, below). o-Dianisidine is also used as a chemical intermediate to produce o-dianisidine diisocyanate for use in adhesives and as a component of polyurethanes. Other uses are as a dye for paper, plastics, rubber, and textiles and as a test substance for detection of metals, thiocyanates, and nitrites (IARC 1974, HSDB 2009).

Preparation

2-Nitroanisole is reduced (H2-catalyst or iron-formic acid) to o-anisidine or (benzidine-type reaction) to o-dianisidine [119-90-4], both of which are important as dye intermediates.

Synthesis Reference(s)

Journal of the American Chemical Society, 106, p. 7077, 1984 DOI: 10.1021/ja00335a035

General Description

Colorless crystals or a light brown powder. Turns violet on standing. Carcinogen.

Air & Water Reactions

Finely powdered material is a significant dust explosion hazard. Insoluble in water.

Reactivity Profile

o-Dianisidine is a weak base. Reacts exothermically with acids. Sensitive to heat, air and prolonged exposure to light.

Fire Hazard

o-Dianisidine is combustible.

Safety Profile

Confirmed carcinogen with experimental tumorigenic data. Moderately toxic by ingestion. Mutation data reported. Combustible when exposed to heat or flame. When heated to decomposition it emits toxic fumes of NOx.

Carcinogenicity

o-Dianisidine is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.

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o-Dianisidine Suppliers

TianJin Alta Scientific Co., Ltd.
Tel
+86-022-6537-8550
Fax
+86-022-2532-9655
Email
contact@altascientific.com
Country
China
ProdList
2775
Advantage
58
Lianyungang City and Rui Technology Co., Ltd.
Email
sales@henrychem.com
Country
CHINA
ProdList
259
Advantage
58
Zhende Chemical Technology (Shanghai) Co., Ltd.
Tel
15601952568
Email
sales4@myuchem.com
Country
CHINA
ProdList
2334
Advantage
58
SiChuang NanBu Honesty Technology Co., Ltd.
Tel
0838-5675166
Fax
0838-5675535
Email
nbcxkj@126.com
Country
China
ProdList
704
Advantage
55
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96504
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40268
Advantage
62
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30163
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24555
Advantage
81
Energy Chemical
Tel
021-58432009
Fax
021-58436166-800
Email
sales8178@energy-chemical.com
Country
China
ProdList
44026
Advantage
61
Capot Chemical Co., Ltd
Tel
+86 (0) 571 85 58 67 18
Fax
0086-571-85864795
Email
sales@capotchem.com
Country
China
ProdList
18228
Advantage
66
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View Lastest Price from o-Dianisidine manufacturers

Shanghai Rlavie Technology Co ltd
Product
3,3'-DiMethoxybenzidine 119-90-4
Price
US $0.00/Kg/Drum
Min. Order
1g
Purity
99%minHPLC
Supply Ability
500kgs/month
Release date
2020-10-03
Career Henan Chemical Co
Product
o-Dianisidine 119-90-4
Price
US $1.00/KG
Min. Order
1KG
Purity
95-99%
Supply Ability
1ton
Release date
2019-12-30
Shaanxi Dideu Medichem Co. Ltd
Product
o-Dianisidine 119-90-4
Price
US $0.10/KG
Min. Order
1KG
Purity
99.0%
Supply Ability
1000 tons
Release date
2019-12-30

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