Tánxiāng (檀香) — Sandalwood

Tánxiāng (檀香, "sandal fragrance") refers to the heartwood of Santalum album and related species — the pale, dense, intensely fragrant wood that forms the backbone of Chinese incense. The name was originally 白檀香 (bái tán xiāng, "white sandalwood") in classical texts, later shortened to 檀香. Sandalwood arrived in China via Buddhist transmission and maritime Silk Road trade — first documented in Chinese medical texts during the Hàn dynasty (206 BCE–220 CE) — and has been one of the two principal incense materials, alongside chénxiāng, ever since. The city of Honolulu is called 檀香山 (Tán xiāng shān, "Sandalwood Mountain") in Chinese, reflecting the wood's role in Pacific trade history.

What varieties of tánxiāng are used in Chinese incense?

Lǎo Shān (老山) — Mysore Indian sandalwood

Lǎo Shān (老山, "old mountain") is the Chinese name for Santalum album sourced from the Mysore region (now Mandya, Hassan, and surrounding districts) of Karnataka state, India. It is the gold standard of sandalwood globally. Characteristics:

• Fragrance: Rich, milky, buttery, and sweet — a dense creamy base note without the harsh or green notes found in inferior grades
• Heartwood colour: Pale golden-yellow to amber
• Density: High; good specimens are heavy for their size
• Oil content: Very high (>5% santalol); oil is concentrated in the heartwood

The Karnataka Forest Department controls felling and export of genuine Mysore sandalwood; supply of authentic old-mountain material is sharply limited. Most "Indian sandalwood" on the global market is from plantation-grown trees outside the traditional Mysore belt and produces a noticeably lighter, less rich fragrance profile.

As documented by Darabara (2024), genuine Lǎo Shān is characterised by a specific olfactory profile — "a rich, milky, buttery creaminess that lacks the harsh, woody bite found in other varieties."

Australian sandalwood (Santalum album, S. spicatum)

Australia now grows Santalum album in sustainable plantations in Western Australia (Kununurra region) and Queensland, producing material that closely resembles traditional Mysore sandalwood in fragrance character. Australian Santalum album is certified under sustainable forestry management and has become the primary commercially available substitute for Mysore material.

Santalum spicatum (Australian native sandalwood) is a related but distinct species — drier, woodier, lower oil content — used in lower-grade incense and cosmetics.

Yunnan Chinese sandalwood (Santalum album)

Santalum album cultivation in China's Xīshuāngbǎnnà (西双版纳) region of Yúnnán province has expanded over recent decades. Local Dǎi (傣族) communities have grown sandalwood for centuries, blending traditional cultivation knowledge with modern agroforestry. Yunnan-grown material has a soft, creamy fragrance — lighter than Lǎo Shān but pleasant and used in domestic high-end incense and cosmetics.

TL;DR: Three tiers: Lǎo Shān (Mysore) = rarest, richest fragrance; Australian plantation = primary commercial alternative, close profile; Yunnan Chinese = domestic production, lighter. Oil content and milky-sweet depth distinguish quality — "harsh" or dry notes indicate lower-grade material.

Why is tánxiāng important in Buddhist ritual?

Sandalwood entered China primarily through Buddhism. The Sanskrit term chandana (चन्दन) — source of the Chinese transliteration 旃檀 zhāntán — denoted sandalwood as a sacred offering material in Indian Buddhist practice. According to the Saddharmapuṇḍarīka Sūtra (法华经, Lotus Sutra), sandalwood smoke carries prayers upward and purifies the environment for practice.

In Chinese Buddhist temples, sandalwood incense (or blends based on it) is the standard offering material. The clean, non-intrusive fragrance of tánxiāng was considered appropriate for temple use because it does not overwhelm — it creates an ambient sacred atmosphere rather than a strong olfactory statement.

This ritual role is distinct from chénxiāng, which in Chinese culture carries connotations of individual refinement, medical use, and high aesthetics. In practice, most Chinese incense blends use tánxiāng as a base material and add other aromatics — including chénxiāng — for character.

How does tánxiāng age?

Genuine high-grade sandalwood heartwood retains its fragrance for centuries. Antique Lǎo Shān pieces from the 17th–19th century still carry full fragrance. The fragrance does not develop over time in the same way as chénxiāng or huánghuālí — it is present from the moment the heartwood is formed and persists rather than transforms. Lower-grade material can lose volatile top notes within years, leaving a flat woody base.

For wearable beads and carved objects, tánxiāng beads develop a mild patina (bāojiāng 包浆) with skin contact — oil absorption gives a warm glow — but the transformation is subtler than chénxiāng or huánghuālí.

How to authenticate tánxiāng

• Fragrance test: Rub vigorously between palms — genuine sandalwood releases a milky, creamy, persistent scent. Synthetic or inferior wood smells flat, chemical, or fades immediately.
• Colour: Good heartwood is pale golden-yellow, not deep brown. Deep colouring may indicate dye.
• Oil marks: Fresh-cut genuine sandalwood leaves oily marks on paper or fingers.
• Weight: Dense and heavy relative to size — heavier than typical wood at the same volume.

Related

• Chinese Incense (香) — History and Culture
• Chénxiāng (沉香) — Agarwood
• Incense Forms
• Xiānglú (香炉) — Incense Burners

FAQ

What is tánxiāng? Tánxiāng (檀香) is the Chinese name for sandalwood — specifically the heartwood of Santalum album and related species. Used in Chinese incense, Buddhist ritual, and traditional medicine for roughly 2,000 years. The fragrance is milky, creamy, and sweet — the reference base note in Chinese incense blending.

What is Lǎo Shān sandalwood? Lǎo Shān (老山, "old mountain") is the Chinese term for Santalum album from the Mysore region of Karnataka, India — the globally recognised gold standard. It is defined by its exceptionally rich, milky-buttery fragrance with no harsh notes. Karnataka Forest Department controls supply; genuine Lǎo Shān is scarce and commands a significant premium.

How does tánxiāng differ from chénxiāng? Tánxiāng (sandalwood) forms in healthy trees and is present across the heartwood — it's a tree product rather than a wound response. Chénxiāng (agarwood) forms only where a tree was wounded and produces resin. Tánxiāng has a bright, milky, creamy character; chénxiāng is darker, deeper, and more complex. Tánxiāng is often used as a base in compound incense formulas.

Is sandalwood endangered? Wild Santalum album in India is classified as Vulnerable (IUCN). Karnataka's Mysore sandalwood is government-controlled. Commercial supply now primarily comes from certified Australian and Fijian plantations. Unlike chénxiāng, sandalwood is not currently CITES listed, but wild Indian supply is tightly restricted.

What does tánxiāng smell like? Rich, milky, buttery, sweet, with a warm woody base — often described as creamy or dairy-like. High-grade Lǎo Shān specifically lacks any harsh or green notes. The fragrance is persistent and low-volatility, staying close to the skin in wearables and lasting for hours in incense form.