Molekula
Neutral Red (C.I. 50040)
Neutral Red (C.I. 50040) is a pH indicator and vital stain used in microbiology and histology for cell viability and membrane integrity studies. It is a cationic dye with a red color in acidic conditions and yellow in basic conditions. CAS: 553-24-2, Molecular Formula: C15H17ClN4, Molecular Weight: 288.78 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Neutral Red (C.I. 50040) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Neutral Red (C.I. 50040) is a pH indicator and vital stain used in microbiology and histology for cell viability and membrane integrity studies. It is a cationic dye with a red color in acidic conditions and yellow in basic conditions. CAS: 553-24-2, Molecular Formula: C15H17ClN4, Molecular Weight: 288.78 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Neutral Red (C.I. 50040) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Very dark-green to blackish-brown powder |
| Identification | Conforms to reference |
| pH | 6.8 (red) - 8.0 (yellow) |
| Residue on Ignition | ≤2.0% |
| Ethanol dissolution test | Pass |
| Sensitivity Test | Pass |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 60 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 553-24-2 |
| Molecular Formula | C15H17ClN4 |
| Molecular Weight | 288.78 |
| SMILES | CC1=CC2=NC3=C(C=C(C=C3)N(C)C)N=C2C=C1N.Cl |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 32129000 |
| Tariff Code | 3212900000 |
Safety & GHS
-
Explosive
GHS01
-
Flammable
GHS02
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H341 Suspected of causing genetic defects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists 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 Neutral Red used for?
Neutral Red is commonly used as a pH indicator in microbiology and as a vital stain in cell biology to distinguish live from dead cells.
What is the chemical formula and molecular weight of Neutral Red?
The formula is C15H17ClN4 with a molecular weight of 288.78 g/mol.
How should Neutral Red be stored?
Store at ambient temperature, protected from light and moisture.
What grade of Neutral Red does Molekula supply?
Molekula supplies Neutral Red in analytical grade for laboratory use.
Can Molekula supply Neutral Red in bulk quantities?
Yes, Molekula can supply Neutral Red in bulk quantities—please contact us for pricing and availability.
What documentation comes with a Neutral Red order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.