Molekula
Dimethyl yellow (C.I. 11020)
Dimethyl yellow (C.I. 11020) is a synthetic organic dye used in analytical chemistry and as a pH indicator. It is a yellow crystalline solid with the molecular formula C6H5N=NC6H4N(CH3)2 and a molecular weight of 225.29 g/mol. It is stable at ambient temperatures and should be handled with care due to its danger signal word. CAS number: 60-11-7. Molekula supplies Dimethyl yellow (C.I. 11020) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Dimethyl yellow (C.I. 11020) is a synthetic organic dye used in analytical chemistry and as a pH indicator. It is a yellow crystalline solid with the molecular formula C6H5N=NC6H4N(CH3)2 and a molecular weight of 225.29 g/mol. It is stable at ambient temperatures and should be handled with care due to its danger signal word. CAS number: 60-11-7. Molekula supplies Dimethyl yellow (C.I. 11020) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow to Orange to brown powder |
| Melting Point | 105 - 116 ℃ |
| Loss on Drying | ≤1.0% |
| Strength | 98.67% |
| Colour Change | Red @ pH 2.9, Yellow @ pH 4.9 |
| Sulfated ash | 0.4% |
| Lamda Max | 400nm (in methanol) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 60-11-7 |
| Molecular Formula | C6H5N=NC6H4N(CH3)2 |
| Molecular Weight | 225.29 |
| SMILES | N(=NC1=CC=C(C=C1)N(C)C)C=2C=CC=CC2 |
| EC / UN Number | 2811 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29270030 |
| Tariff Code | 2927000090 |
Safety & GHS
-
Flammable
GHS02
-
Corrosive
GHS05
Hazard statements
- H301 Toxic if swallowed
- H351 Suspected of causing cancer
Precautionary statements
- P201 Obtain special instructions before use
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P308+313 IF exposed or concerned: Get medical advice/attention
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Dimethyl yellow (C.I. 11020) used for?
Dimethyl yellow is primarily used as a pH indicator in analytical chemistry, particularly in titrations where it changes color around pH 3.0 to 4.6.
What is the chemical formula and molecular weight of Dimethyl yellow?
The formula is C6H5N=NC6H4N(CH3)2 with a molecular weight of 225.29 g/mol.
How should Dimethyl yellow be stored?
It should be stored at ambient temperature, away from light and moisture, and kept in a tightly closed container.
What grade of Dimethyl yellow does Molekula supply?
Molekula supplies Dimethyl yellow in analytical grade, suitable for laboratory use.
Can Molekula supply Dimethyl yellow in bulk quantities?
Yes, Molekula can supply Dimethyl yellow in bulk quantities—please contact our sales team for volume pricing and availability.
What documentation comes with a purchase of Dimethyl yellow?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.