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Caprolactam CAS#105-60-2

Water-soluble‌：Easily dissolves in water.

‌Denser than water‌：Specific gravity 1.05 ensures stability.

‌Flexible form‌：Available as solid flakes or molten.

Broad industrial use‌：Key for fibers, plastics, films, coatings, and polyurethanes.

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Product Description

Products Description of Caprolactam CAS#105-60-2

Caprolactam is a white flaky solid, freely soluble in water. Its 70% aqueous solution has a specific gravity of 1.05, denser than pure water, and the compound also exists in a molten state. Inhalation carries toxic risks, with occupational exposure limits set at 5 ppm for vapor and 1 mg/m³ for dust. It is mainly used to manufacture synthetic fibers, plastics, films, coatings and polyurethanes.

Product Applications of Caprolactam CAS#105-60-2

ε-Caprolactam is a key monomer for polyamide synthetic fibers and polycaprolactam (Nylon 6), widely used in carpets, textiles, apparel and tire materials. It also acts as a solvent for high-molecular-weight polymers, an ingredient in coatings and plasticizers, and a cross-linking agent for polyurethane synthesis.

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Product Information

Parameters

Melting point	68-71 °C(lit.)
Boiling point	136-138 °C10 mm Hg(lit.)
bulk density	500-550kg/m3
density	1.01
vapor pressure	<0.01 mm Hg ( 20 °C)
refractive index	1.4935
FEMA	4235 \| 1,6-HEXALACTAM
Fp	152 °C
storage temp.	Store below +30°C.
solubility	H2O: 0.1 g/mL, clear, colorless
pka	16.61±0.20(Predicted)
form	Crystals or Flakes
Specific Gravity	1.042 (20/4℃)
color	White
PH	7.0-8.5 (333g/l, H2O, 20℃)
Odor	amine spicy
Odor Type	spicy
explosive limit	1.4-8%(V)
Water Solubility	4560 g/L (20 ºC)
Merck	14,1761
JECFA Number	1594
BRN	106934
Exposure limits	ACGIH: TWA 5 mg/m3NIOSH: TWA 1 mg/m3; TWA 0.22 ppm; STEL 3 mg/m3; STEL 0.66 ppm
Dielectric constant	1.7 - 1.9（0.0℃）
LogP	0.12 at 25℃
CAS DataBase Reference	105-60-2(CAS DataBase Reference)
NIST Chemistry Reference	Caprolactam(105-60-2)
IARC	3 (Vol. 39, Sup 7, 71) 1999
EPA Substance Registry System	Caprolactam (105-60-2)

Safety Information

Hazard Codes	Xn
Risk Statements	20/22-36/37/38
Safety Statements	2-24/25
OEB	C
OEL	TWA: 1 mg/m3, STEL: 3 mg/m3
RIDADR	UN 2811 6.1/PG 2
WGK Germany	1
RTECS	CM3675000
Autoignition Temperature	707 °F
TSCA	Yes
HS Code	29337100
Hazardous Substances Data	105-60-2(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 2.14 g/kg (Smyth)

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