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2,5-Diaminotoluene sulfate (Fouramine STD)

2,5-Diaminotoluene sulfate (Fouramine STD)

CAS Number: 615-50-9

Molecular Formula: C7H12N2O4S

Purity: 99.96%

Acute ToxicAcute Toxic
Environmental HazardEnvironmental Hazard

About 2,5-Diaminotoluene sulfate (Fouramine STD)

In the North American performance chemicals and personal care manufacturing market, 2,5-Diaminotoluene sulfate (CAS No: 615-50-9)—frequently specified by domestic R&D units under synonyms like 2-Methyl-1,4-benzenediamine sulfate, Colorex 25DTS, and C.l. Oxidation Base 4—is expanding as an primary developer for permanen...

Synonyms

  • oxidation base 14
  • ox idation base 14
  • 2-Methyl-p-phenylenediamine
  • C.I.Direct Red 118
  • para-Toluenediamine sulfate
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2,5-Diaminotoluene sulfate (Fouramine STD) Specifications

CAS Number
615-50-9
Molecular Formula
C7H12N2O4S
Molecular Weight
220.25 g/mol
IUPAC Name
2-methylbenzene-1,4-diamine;sulfuric acid
Canonical SMILES
CC1=C(C=CC(=C1)N)N.OS(=O)(=O)O
InChI Key
KZTWOUOZKZQDMN-UHFFFAOYSA-N
InChI
InChI=1S/C7H10N2.H2O4S/c1-5-4-6(8)2-3-7(5)9;1-5(2,3)4/h2-4H,8-9H2,1H3;(H2,1,2,3,4)
PubChem CID
22856
UNII Code
8PSD05SPE2
ChEBI ID
CHEBI:156544
EINECS Number
210-431-8
UN Number
3143
MDL Number
MFCD00013003
Molecular Weight
220.25 g/mol
Hydrogen Bond Donor Count
4
Hydrogen Bond Acceptor Count
6
Exact Mass
220.05177804 Da
Topological Polar Surface Area
135 Ų
Melting Point
40.6 °C
2,5-Diaminotoluene sulfate Purity (HPLC AREA %)
99.96%
GHS Hazard Statements
H301: Toxic if swallowed H312: Harmful in contact with skin H317: May cause an allergic skin reaction H332: Harmful if inhaled H411: Toxic to aquatic life with long lasting effects
Hazard Classes and Categories
Acute Tox. 3 (100%) Acute Tox. 4 (100%) Skin Sens. 1 (100%) Eye Irrit. 2 (52.9%) STOT RE 2 (52.9%) Aquatic Acute 1 (50.7%) Aquatic Chronic 1 (14.7%) Aquatic Chronic 2 (90.1%)

Primary Developer in Permanent Hair Dyes

An oxidative primary intermediate that reacts with secondary couplers under alkaline hydrogen peroxide conditions to produce durable brown, black, and dark blond hair shades

Azine & Safranine Dye Intermediate

A deployment by speciality dye manufacturers to synthesise C.I. Basic Red 2 (Safranine T) and C.I. Acid Brown 103 for textile, paper, and biological stain applications

Leather & Fur Colouration Systems

Acts as an oxidative coupling agent in industrial leather staining formulations to achieve deep, lightfast grey and brown finishes

Speciality Ink & Analytical Reagent Manufacturing

A reactive aromatic diamine building block in indelible inks, spirit-based marker formulations, and diagnostic reagent preparations

COA
Download
  1. oxidation base 14
  2. ox idation base 14
  3. 2-Methyl-p-phenylenediamine
  4. C.I.Direct Red 118
  5. para-Toluenediamine sulfate

2,5-Diaminotoluene sulfate (Fouramine STD) FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

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