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2,5-Diaminoanisole sulfate is an organic chemical compound with the molecular formula C7H11N3O4S, derived from aniline. It is renowned for its capacity to impart permanent color to hair, making it a common ingredient in oxidative hair dye formulations. Despite its utility, it has been recognized as a potential allergen and skin irritant, leading to restrictions or bans in certain countries due to safety concerns. Beyond its application in hair dyes, 2,5-Diaminoanisole sulfate also serves in the pharmaceutical industry and as a chemical intermediate for synthesizing other compounds.

66671-82-7

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Basic information
1. Product Name: 2,5-Diaminoanisole sulfate
2. Synonyms: 2-Methoxy-1,4-phenylenediaminesulfate;2-methoxy-p-phenylenediaminesulfate;2-methoxy-p-phenylenediaminsulfate;4-benzenediamine,2-methoxy-sulfate(1:1);4-benzenediamine, 2-methoxy- sulfate;(4-amino-2-methoxy-phenyl)amine;2-methoxybenzene-1,4-diamine;2-Methoxybenzene-1,4-diaMine sulfate
3. CAS NO:66671-82-7
4. Molecular Formula: C₇H₁₀N₂O*H₂O₄S
5. Molecular Weight: 236.25
6. EINECS: 266-443-9
7. Product Categories: N/A
8. Mol File: 66671-82-7.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: 299.1 °C at 760 mmHg
3. Flash Point: 159 °C
4. Appearance: powder
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 2,5-Diaminoanisole sulfate(CAS DataBase Reference)
10. NIST Chemistry Reference: 2,5-Diaminoanisole sulfate(66671-82-7)
11. EPA Substance Registry System: 2,5-Diaminoanisole sulfate(66671-82-7)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. RIDADR: 2811
5. WGK Germany:
6. RTECS:
7. HazardClass: 6.1(b)
8. PackingGroup: III
9. Hazardous Substances Data: 66671-82-7(Hazardous Substances Data)

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SDS
Synthetic route
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66671-82-7 Usage

Uses

Used in Hair Dye Industry:
2,5-Diaminoanisole sulfate is used as a colorant in hair dyes for its ability to provide long-lasting color to hair. It is particularly favored in oxidative hair dye formulations due to its effectiveness in achieving permanent coloration.
Used in Pharmaceutical Industry:
In the pharmaceutical sector, 2,5-Diaminoanisole sulfate is utilized in the production of certain medications, contributing to the development of new therapeutic agents.
Used as a Chemical Intermediate:
2,5-Diaminoanisole sulfate also serves as a crucial chemical intermediate in the synthesis of other compounds, playing a significant role in the chemical manufacturing process.

Check Digit Verification of cas no

The CAS Registry Mumber 66671-82-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,7 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 66671-82:
(7*6)+(6*6)+(5*6)+(4*7)+(3*1)+(2*8)+(1*2)=157
157 % 10 = 7
So 66671-82-7 is a valid CAS Registry Number.

InChI:InChI=1/C7H10N2O.H2O4S/c1-10-7-4-5(8)2-3-6(7)9;1-5(2,3)4/h2-4H,8-9H2,1H3;(H2,1,2,3,4)

66671-82-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name	2,5-Diaminoanisole sulfate

1.2 Other means of identification

Product number	-
Other names	2-methoxy-1,4-benzenediaminesulfate

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number	-
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:66671-82-7 SDS

66671-82-7Synthetic route

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 5307-02-8
2-methoxy-1,4-phenylenediamine

Conditions

Conditions	Yield
With sodium hydroxide for 0.5h;	95%

: 56-81-5
glycerol

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 951-06-4
5-methoxy-[4,7]phenanthroline

Conditions

Conditions	Yield
With sulfuric acid; sodium 3-nitrobenzenesulfonate In water for 6h; Heating;	79%

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 127-68-4
sodium 3-nitrobenzenesulfonate

: 5-methoxy-4,7-phenanthroline hydrogen sulfate

Conditions

Conditions	Yield
With sulfuric acid In water; glycerol for 6h; Heating;	60%

: 98-09-9
benzenesulfonyl chloride

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 83202-21-5
methoxybenzoquinone bis(benzenesulfonimide)

Conditions

Conditions	Yield
With lead(IV) acetate; potassium hydroxide 2) acetic acid; Yield given. Multistep reaction;

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 217-82-3
4,7-phenanthrolino-5,6:5’,6'-pyrazine

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 60 percent / H2SO4 / glycerol; H2O / 6 h / Heating 2: 86 percent / HNO3; H2SO4 / 10 h / 96 °C 3: 65 percent / methanol / 2 h / 30 °C View Scheme
Multi-step reaction with 3 steps 1: 79 percent / sodium m-nitrobenzene sulfonate, sulfuric acid / H2O / 6 h / Heating 2: 66 percent / sulfuric acid, fuming nitric acid / 2 h / 120 °C 3: 41 percent / methanol / 2 h / Ambient temperature View Scheme

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 84-12-8
phanquinone

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 60 percent / H2SO4 / glycerol; H2O / 6 h / Heating 2: 86 percent / HNO3; H2SO4 / 10 h / 96 °C View Scheme
Multi-step reaction with 2 steps 1: 79 percent / sodium m-nitrobenzene sulfonate, sulfuric acid / H2O / 6 h / Heating 2: 66 percent / sulfuric acid, fuming nitric acid / 2 h / 120 °C View Scheme

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 3,6-Bis-benzenesulfonyl-5-methoxy-1,2,3,6-tetrahydro-pyrrolo[3,2-e]indole

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 1) KOH, 2) Pb(OAc)4 / 2) acetic acid 2: 240 h / Ambient temperature 3: 1) O3, Me2S, 2) HCl View Scheme

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 89005-16-3
3,6-Bis-benzenesulfonyl-5-methoxy-3,6-dihydro-1H-pyrrolo[3,2-e]indol-2-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 1) KOH, 2) Pb(OAc)4 / 2) acetic acid 2: 240 h / Ambient temperature 3: 1) O3, Me2S, 2) HCl View Scheme

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: 89005-14-1
3,6-Bis-benzenesulfonyl-5-methoxy-8-methyl-3,6-dihydro-1H-pyrrolo[3,2-e]indol-2-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 1) KOH, 2) Pb(OAc)4 / 2) acetic acid 2: 75 percent / 96 h / Ambient temperature 3: 1) O3, Me2S, 2) HCl / 1) -78 deg C, 2) dioxane View Scheme

: 66671-82-7
2-methoxy-1,4-phenylenediamine sulfate

: (1-Benzenesulfonyl-5-benzenesulfonylamino-7-methoxy-3-methyl-1H-indol-4-yl)-acetic acid

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 1) KOH, 2) Pb(OAc)4 / 2) acetic acid 2: 75 percent / 96 h / Ambient temperature 3: 1) O3, Me2S, 2) HCl / 1) -78 deg C, 2) dioxane 4: NaOH View Scheme