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)

2,5-Diaminotoluene sulfate (CAS No: 615-50-9), recognised across international trade registers under as Toluene-2,5-diamine sulphate, C.I. 76043, 2-Methyl-p-phenylenediamine sulfate, and Fouramine STD, is transitioning from a traditional dye salt into a primary, high-purity oxidative developer across the global persona...

Synonyms

  • oxidation base 14
  • ox idation base 14
  • 2-Methyl-p-phenylenediamine
  • C.I.Direct Red 118
  • para-Toluenediamine sulfate

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)
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

  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 (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

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

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

Rounded Top

Explore Dyes and Pigments Portfolio

O-Xylene (Ortho-Xylene)

CAS No 95-47-6

O-Xylene (Ortho-Xylene)

Category

Base Chemicals & Intermediates, Dye and Pigment Intermediates

Sub-Category

Aromatic Hydrocarbons, Synthetic Intermediates

Description : Ortho-xylene (CAS No. 95-47-6) serves as a fundamental aromatic building block, with approximately 90% of global production dedicated to the catalytic oxidation of its methyl groups to produce phthalic anhydride, a critical precursor for phthalate plasticisers and alkyd resins. The market is currently undergoing a structural shift driven by the rising demand for high-performance unsaturated polyester resins (UPR) in the automotive and renewable energy sectors, where the isomer's unique ortho-substituted structure facilitates the synthesis of materials with superior thermal stability and tensile strength. Furthermore, the global supply chain is increasingly influenced by geopolitical tensions and feedstock volatility in the aromatics complex, necessitating a strategic focus on integrated refinery-to-petrochemical operations to mitigate the impact of fluctuating naphtha costs on downstream speciality chemical derivatives. As globally established O-Xylene (Ortho-Xylene) supplier with high purity %, we ensure dependable supply, consistent quality, and complete regulatory documentation, including O-Xylene (Ortho-Xylene) CoA and O-Xylene (Ortho-Xylene) TDS across all grades. Beyond supply, we support partners through the entire product lifecycle from route scouting, process and formulation development, and analytical method development to scale-up, process optimisation, and pilot-to-commercial manufacturing. Our teams also assist with GMP-compliant quality assurance, regulatory documentation, and global supply chain and logistics coordination.

View Product
HC Blue 12

CAS No 132885-85-9

HC Blue 12

Category

Hair Dyes & Colorants

Sub-Category

Direct Hair Dyes

View Product