Crystal Violet Lactone CAS 1552-42-7

Crystal Violet Lactone is a white to light yellow crystalline powder, as the core component of pressure sensitive dyes, widely used in carbonless copy paper, thermal paper and other colour changing materials.It can show colour (blue-violet) when it meets acid or specific conditions, with high sensitivity and reversibility.It needs to be kept away from light and moisture, and avoid contact with acidic substances.

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Model:
1552-42-7
Brand:
Futurechemical
Code:
1552-42-7

Product Description

Crystal violet lactone Basic information
Product Name:	Crystal violet lactone
CAS:	1552-42-7
MF:	C26H29N3O2
MW:	415.53
EINECS:	216-293-5
Product Categories:	Pharmaceutical intermediates;Organics;Color Former;Color Former & Related Compounds;Functional Materials;C;Stains and Dyes;Stains&Dyes, A to;john's
Mol File:	1552-42-7.mol
Crystal violet lactone Chemical Properties
Melting point	180-183°C
Boiling point	534.12°C (rough estimate)
density	1.1424 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.7120 (estimate)
storage temp.	Sealed in dry,Room Temperature
pka	4.73±0.24(Predicted)
form	Powder
color	White to Light yellow
Water Solubility	<0.1 g/100 mL at 22.5 ºC
λmax	354 nm
LogP	4.95 at 25℃
CAS DataBase Reference	1552-42-7(CAS DataBase Reference)
EPA Substance Registry System	Crystal violet lactone (1552-42-7)

检验项目 Item	检验指标 Standard	检验结果 Result
外观 Appearance	浅黄色至白色粉末或晶体 Light yellow to white powder or crystal	白色粉末 white powder
CVL 主含量%	≥96%	96.3965%
无色染料总含量% Total colorless dye content	≥97%	97.2784%
显色后的颜色强度% Intensity of the color after rendering	≥97%	97．3107%
溶剂油（二芳基乙烷）不溶物% Solvent oil (diaryl ethane) insoluble	≤0.2	0.1806
熔点(℃) Melting point	≥175	177
可挥发组分% Volatile component	≤0.1	0.0823
结论 conclusion	优等品 Classy article

Crystal Violet Lactone CAS 1552-42-7 C26H29N3O2 Acid-base indicator Color developing agent

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.